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TOOLS-120 Dailey ® Drilling, and Fishing Tools Mechanical Jars Hydraulic Jars Hypulse Jar Slingers Bumper Subs Shock Absorbers Motor Thrusters

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Dailey Drilling, and Fishing Tools Mechanical Jars Hydraulic Jars Hypulse Jar Slingers Bumper Subs Shock Absorbers Motor Thrusters

TOOLS-120

Table of ContentTABLE OF CONTENT .................................................................................................................................. 2 QUALITY CERTIFICATIONS ...................................................................................................................... 3 PRODUCTS DAILEY DNT DRILLING JAR ............................................................................................................... 4 DAILEY L.I. MECHANICAL DRILLING JAR .......................................................................................... 7 COMPARISON OF MECHANICAL JARS ................................................................................................ 11 DAILEY HYDRAULIC DRILLING JAR .................................................................................................. 12 COMPARISON OF HYDRAULIC JARS ................................................................................................... 16 DAILEY HYDRAULIC DRILLING JARS SPECIAL FEATURES ........................................................... 17 DAILEY HYPULSE JAR SLINGER - DRILLING .............................................................................. 21 DAILEY DUAL-ACTING COILED TUBING JAR .................................................................................. 23 DAILEY HYPULSE JAR SLINGER - COILED TUBING ................................................................... 27 DAILEY HYDRAULIC FISHING JAR .................................................................................................... 29 DAILEY HYPULSE JAR SLINGER - FISHING ................................................................................. 33 DAILEY LUBRICATED BUMPER SUB .................................................................................................. 37 DAILEY CBC-THRUSTER ................................................................................................................... 41 DAILEY R-A-M SHOCK ABSORBER ................................................................................................ 44 PUMP OPEN FORCE DNT DRILLING JARS ............................................................................................................................. 46 L.I. MECHANICAL DRILLING JARS ........................................................................................................ 47 HYDRAULIC DRILLING JARS .................................................................................................................. 48 HYPULSE JAR SLINGER - DRILLING ................................................................................................ 49 DUAL-ACTING COILED TUBING and SLIMHOLE JARS ....................................................................... 50 HYPULSE JAR SLINGER - COILED TUBING ..................................................................................... 51 HYDRAULIC FISHING JARS .................................................................................................................... 52 HYPULSE JAR SLINGER - FISHING ................................................................................................... 53 LUBRICATED BUMPER SUBS .................................................................................................................. 54 CBC-THRUSTER .....................................................................................................................................55 R-A-M SHOCK ABSORBER .................................................................................................................. 56

2000. Weatherford. All rights reserved.

2

TOOLS-120

(2/2000)

QUALITY CERTIFICATIONS

API Spec Q1, 5th Edition Certified Quality System License No. 7-0224 Weatherfords Dailey Manufacturing Facility - Conroe, Texas, USA

ISO 9001/94 Certified Quality System by Lloyds Register Quality Assurance Weatherfords Dailey Facility - Aberdeen, Scotland

abcdefghijkISO 9002/94 Certificate of Quality Assurance by ICONTEC Colombia Petroleum Services Corp, Bogota, Colombia

2000. Weatherford. All rights reserved.

3

WFT-MQS

(1/2000)

DAILEY DNT DRILLING JAR

s

Polished Stem

s

Upper Packing Body

Upper Connector

s

s

Barrel

s

s

s

Lower Connector

s

s

Lower Packing Body

s

s

Bearing Mandrel Bearing Cage Jay Stem Jay Rollers

s

Torque Spring Spring Stem Wash Pipe Balance Piston

s s

DAILEY DNT DRILLING JARThe Dailey No Torque (DNT) Mechanical Drilling Jar was specifically designed to eliminate torque problems associated with high angle drill strings and the resultant hole drag they produce. Utilizing the best features of two proven technologies, the DNT Jar offers the kind of reliability and standard setting performance you expect from the leader in downhole technology. Combining proven mechanical technologies of the Dailey L.I. Drilling Jars spring-loaded roller triggering system with the field proven triggering isolation capabilities of our Hydraulic Drilling Jars involute spline mechanism, has created a reliable solution to torque-related downhole jar problems. The DNT Jar allows upward and downward drill string tripping, using factory preset triggering loads or customer specified loads for specific or specialized downhole situations. Each DNT Jar is delivered ready to go. When drill string sticking occurs, you merely pick up or slack off to the preset triggering load to activate the jar. After triggering, you can instantly recock by picking up or slacking off to the cocking weight.

DNT MECHANICAL DRILLING JAR SPECIFICTAIONSOutside Diameter (in.) Inside Diameter (in.) 4 3/4 2 NC-38 3 1/2 IF 402.6 24 69,700 37,600 75,000 33' - 0" 1,350 8 8 16 325 8.9 6 1/4 2 1/4 NC-46 4 1/2 XH 4 1/2 IF 543 50 94,300 56,400 118,000 33' - 0" 2,500 7 1/8 8 15 1/8 325 12.6 7 3/4 2 3/4

Tool Joint Size (API)

6 5/8 Reg

Tensile Yield* ( x 1000 lbs.) Torsional Yield* ( x 1000 ft. lbs.) Factory Set Up/Down Stroke (lbs.) Max. Overpull Up/Down (lbs.) Approx. Length Extended (ft. - in.) Approx. Weight (lbs.) Free Travel Upstroke (in.) Free Travel Downstroke (in.) Total Stroke (in.) Max. BHT ( F ) Pump Open Area (sq. in.)

958 100 102,500 42,300 125,000 34' - 6" 4,100 8 8 16 325 18.7U.S. Patent No. 4,715,454

* Tensile and torsional yield values are calculated per A.P.I. RP7G based on nominal dimensions and the published yield strength of the material and do not constitute a guarantee, actual or implied.

PROPER OPERATIONSGENERALINFORMATION: DNT is the acronym for DAILEY NO TORQUE. The letters "DNT" can be found approximately 4" above the shoulder of the mandrel. This is the only distinguishing marking on the jar from the standard L.I. Jar as they have the same appearance. DO NOT USE TONGS TO UNCOCK OR STRETCH THE DNT JAR OPEN. DNT Jars are delivered with a "mandrel clamp". Leave the "mandrel clamp" in place until the jar is ready to go through the rotary. If the DNT Jar comes out of the hole in the upstroke or stretched open position (16" of mandrel showing) replace "mandrel clamp" and rack back. If the DNT Jar comes out of hole in the neutral or cocked position (8" of mandrel showing) leave jar cocked and rack back. To run back in hole, leave cocked and proceed. DO NOT USE TONGS AND TRY TO UNCOCK OR STRETCH THE DNT JAR OPEN. NEVER ATTEMPT TO CLOSE OR OPEN THE DNT JAR ON THE RIG FLOOR. 1999. Weatherford. All rights reserved. 5 WFT-DNT_99 (10/99)

DAILEY DNT DRILLING JARDRILLING TORQUE DOES NOT AFFECT THE DNT DRILLING JAR. While in the hole and sticking occurs, simply pick-up or slack-off to preset tripping weight and the jar will go off either up or down. JAR PLACEMENT IN THE STRING: This jar can be run in tension or compression. It is recommended that 15-20% safety factor in weight on bit be run above or below the jar to insure the tool is not in the weight transition zone. Caution should be exercised not to run the jar directly between drill collars and heavy weight drill pipe, or directly between collar strings of differing O.D. as these O.D. size transition points are where excessive stress occurs. Run the same size collars or heavy weight drill pipe directly above and directly below the jar. Avoid running the jar below reamers, stabilizers, key-seat wipers, or any tool with a larger O.D. than the jar itself as this may restrict jar function.

OPERATION OF THE DRILLING JARUPWARD TRIPPING OF JAR COCK JAR: Slack-off on drill string weight above jar to cocked position. UPWARD STROKE: Pull on drill string until jar setting is reached to trip jar. RECOCK JAR: Slack-off on drill string to slightly below the weight of the string above jar. Usually there will be a noticeable sign, such as a bobble of the weight indicator needle, when jar jar completes its free travel and recocks. EXAMPLEOF: UPWARD TRIPPING OF JAR (in lbs): 250,000 Total indicator weight (string, block, hook, swivel)swivel)

DOWNWARD TRIPPING OF JAR COCK JAR: Slack-off on drill string to cocked position. DOWNWARD STROKE: Slack-off on drill string until jar setting is reached to trip jar. RECOCKING FOR JARRING DOWN: Pick up drill string until slightly above "weight above jar" is reached. Free travel and a slight movement on the weight indicator will be noticed when the jar recocks. EXAMPLEOF DOWNWARD TRIPPING OF JAR (in lbs): 250,000 Total indicator weight (string, block, hook, -40,000 210,000 -37,000 173,000 -20,000 153,000 Weight below jar Weight above jar Jar setting for down-jarring action Hole drag Indicator reading to trip jar downward

-40,000 210,000 +92,000 302,000 +20,000 322,000

Weight below the jar Weight above the jar Jar setting for up-jarring action Hold drag picking up Indicator reading to trip jar upward

Slack-off from 200,000 to 190,000 lbs. to recock the jar.

Pick-up from 220,000 to 240,000 lbs. to recock the jar.

The outlined "Upstroke" and "Downstroke" and "Cocking" weights can vary with hole drag, and allowances must be made to compensate for this. NOTES: The downward stroke of the jar is not as noticeable in most cases as the upward stroke. In many cases, particularly in deep holes and when using a small jar, the downward tripping can be detected by the weight indicator only. In fluid holes, pump pressure can affect the down-jarring results. If possible, reduce the pump to idle before attempting to cock and jar down. RECOMMENDEDPROCEDURETOCHECKJAR: Each trip out of the hole, wash well around the mandrel and through the holes and slots in the upper part of the case to keep mud from hardening or settling in body (between the mandrel and the case). The hardened mud can effect the proper operation of the jar. Check all roller welds and torque pins for possible oil leakage. Should you suspect a wash out, hook up kelly and pump through the tool under pressure and check for leaks.

Interpretation of data presented is responsibility of individuals using data. Weatherford cannot be held responsible for any loss or damage to any property whatsoever; injury or death to any persons whatsoever; or any claims, demands, actions, complaints, proceedings, judgement, losses damages, compensation, liabilities, costs or charges however arising from the unauthorized or undirected use of these specifications.

1999. Weatherford. All rights reserved.

6

WFT-DNT_99

(10/99)

DAILEY L.I. MECHANICAL DRILLING JARPolished Stems

Upper Packing Body

Upper Connector

Barrel

s

s

s

s

Lower Connector

s

Lower Packing Body

s

s s

Jay Stem Jay Rollers Spring Stem Torque Spring

s

Wash Pipe

s

DAILEY L.I. MECHANICAL DRILLING JARThe Dailey L.I. Mechanical Drilling Jar offers reliability and standard setting performance. It incorporates a unique patented mechanism that will trigger immediately after the required pull or weight has exceeded the factory setting. NO DELAYS. NO WAITING. The L.I. Jar operates over a broad range of downhole temperatures and pressures while maintaining its versatility and ease of operation. The L.I. Jar is made with a heavy wall mandrel for maximum torque and minimum backlash. Internal components are especially designed to withstand abrasion and corrosion in virtually any downhole environment. Daileys patented spring loaded roller trigger system has served as the industry standard for mechanical jars for over 50 years. Triggering either up or down as required to free stuck drill pipe, the L.I. Jar is also designed to be fully adjustable downhole. It can be easily recocked for extended jarring operations.O u t s id e D ia m e t e r ( i n . ) In s id e D ia m e t e r ( i n . ) 4 3 /4 2 N C -3 8 3 1 /2 IF 440 15 6 9 ,7 0 0 3 2 ,9 0 0 7 5 ,0 0 0 30' - 6" 1 ,3 4 0 8 5 /8 8 325 7 .7 6 1 /4 2 1 /4 N C -4 6 4 1 /2 X H 4 1 /2 IF 740 2 7 .2 9 4 ,3 0 0 3 7 ,6 0 0 1 1 8 ,0 0 0 34' - 0" 2 ,5 0 0 7 1 /8 8 325 1 1 .0 6 7 /8 2 1 /2 7 3 /4 2 3 /4

T o o l J o in t S iz e ( A P I)

5 1 /2 R e g .

6 5 /8 R e g

T e n s ile Y i e l d * ( x 1 0 0 0 lb s .) T o r s io n a l Yie ld * ( x 1 0 0 0 ft. lb s .) U p S t r o k e ( lb s .) D o w n S t r o k e ( lb s .)F a c to ry S e tting s

962 46 9 8 ,4 0 0 4 2 ,3 0 0 1 2 0 ,0 0 0 34' - 6" 3 ,1 5 0 7 7 /8 8 325 1 4 .2

1 ,1 4 8 6 6 .3 1 0 2 ,5 0 0 4 2 ,3 0 0 1 2 5 ,0 0 0 35' - 6" 4 ,0 0 0 7 3 /4 8 1 /4 325 1 7 .7U.S. Patent No. 4,498,548

M a x . O v e r p u ll U p /D o w n ( lb s .) A p p ro x . L e n g th E x te n d e d(ft. - in.)

A p p r o x . W e ig h t ( lb s .) F r e e T r a v e l U p s t r o k e (in.) F r e e T r a v e l D o w n s t r o k e (in.) M a x . B H T (F ) P u m p O p e n A r e a ( s q . in.)

* Tensile and torsional yield values are calculated per A.P.I. RP7G based on nominal dimensions and the published yield strength of the material and do not constitute a guarantee, actual or implied.

PROPER OPERATIONS GENERAL INFORMATION: The L.I. Mechanical Drilling Jar is a self-cocking jar that trips immediately after applying the required pull or weight. There is no waiting for jarring action as is the case with hydraulic jars. The L.I. Jar is delivered to the location in the cocked position (approximately eight inches of mandrel exposed) and usually will be cocked when it is pulled out of the hole. It is recommended that the jar be uncocked to run in the hole. However, the jar may be run in the cocked position in certain circumstances, such as fishing operations. UNCOCKING THE L.I. MECHANICAL DRILLING JAR: With drill pipe or collars, to be used above the jar, set the slips on the body below the mandrel. Unlock the rotary. Using two sets of tongs, rotate the mandrel 1/8 turn to the left. Hold the 1/8 turn and pick up on the string to open the jar. At this point there will be approximately sixteen inches of mandrel exposed. Pull the slips and run the jar in the hole.

NOTICE:

DO NOT TURN MANDREL OVER 1/8 TURN TO THE LEFT.

1999. Weatherford. All rights reserved.

8

WFT-LI_99-A

(10/99)

DAILEY L.I. MECHANICAL DRILLING JARJAR PLACEMENT IN THE STRING: This jar can be run in tension or compression. It is recommended that a minimum 15-20% safety factor in weight on bit be run above or below the jar to insure the tool is not in the weight transition zone. Caution should be exercised not to run the jar directly between drill collars and heavy weight drill pipe, or directly between collar strings of differing O.D. as these O.D. size transition points are where excessive stress occurs. Run the same size collars or heavy weight drill pipe directly above and directly below the jar. Avoid running the jar below reamers, stabilizers, key-seat wipers, or any tool with a larger O.D. than the jar itself as this may restrict jar function. OPERATION OF THE DRILLING JAR UPWARD TRIPPING OF JAR COCK JAR: Slack off drill string weight above jar to the cocked position. UPWARD STROKE: Pull on drill string until jar setting is reached to trip jar. RECOCK JAR: Slack off drill string to slightly below the weight of the string above the jar. There should be a noticeable sign, such as a bobble or the weight indicator needle, when the jar completes the free travel and cocks. EXAMPLE: 250,000. lbs. Total indicator weight (string, block, hook, swivel) -40,000. Weight below jar 210,000. Weight above jar +94,300. Jar setting for jarring up 304,300. +20,000. Hole drag 324,300. Indicator reading to trip jar upward. Slack off from 200,000 to 190,000 lbs. to recock jar. DOWNWARD TRIPPING OF JAR COCK JAR: Slack off on drill string to the cocked position. DOWNWARD STROKE: Slack off drill string until jar setting is reached to trip jar. RECOCK JAR: Pick up drill string until slightly above weight above jar is reached. Free travel and a slight movement on the weight indicator will be noticed when the jar recocks. EXAMPLE: 250,000. lbs. Total indicator weight (string, block, hook, swivel) -40,000. Weight below jar 210,000. Weight above jar -37,600. Jar setting for jarring down 172,400. -20,000. Hole drag 152,400. Indicator reading to trip jar downward. Pick up from 220,000 to 240,000 lbs. to recock jar.

NOTES: A) Downward stroke is not as noticeable in most cases as the upward stroke. In deep holes and when using a small jar, the downward tripping can be detected by the weight indicator only. B) In fluid holes, pump pressure affects cocking and down-jarring. Reduce pump to idle before attempting to cock and jar down. C) Outlined "Upstroke," "Downstroke," and "Cocking" weights can vary due to hole drag and torque friction. Upon becoming stuck, drilling torque may be trapped in string above jar due to torque friction. Torque trapped in this manner will require additional pull to trip the jar. When this condition occurs, apply left-hand torque to string to make the jar trip. Any left-hand torque applied to the string should be applied 1/8 turn at a time until desired effect is obtained. Once trapped torque is removed from drill pipe, the tripping action of the jar will return to its original setting. HEAVIER OR LIGHTER TRIPPING OF JAR: To make the jar trip harder, apply and hold right-hand torque to drill string. Torque should be applied 1/2 round at a time until the desired setting is attained. Too much right-hand torque makes it impossible to pull enough to trip the jar. If too much right-hand torque is applied, simply release the torque and the jar will return to its original setting. To make the jar trip lighter, apply and hold left-hand torque to the drill string. Torque should be applied 1/2 round at a time until the desired setting is attained. Too much left-hand torque will hold the jar out of jay and prevent the jar from having much jarring effect. In this case, there will be sixteen inches of free travel. To remedy this situation, simply release the left-hand torque and the jar will automatically return to the original setting.

1999. Weatherford. All rights reserved.

9

WFT-LI_99-A

(10/99)

DAILEY L.I. MECHANICAL DRILLING JARRECOMMENDED PROCEDURE TO CHECK JAR: Each trip out of the hole, wash well around the mandrel and through the holes and slots in the upper part of the case to keep mud from hardening or settling in the body (between the mandrel and the case). The hardened mud can effect the proper operation of the jar. The jar mechanism may be tested each trip out. Use two sets of tongs and repeat the procedure for stretching the jar as explained in the section "UNCOCKING THE L.I. MECHANICAL DRILLING JAR". Make sure the mandrel will stroke both directions from the cocked position. Check all roller welds and torque pins for possible oil leakage. Should you suspect a wash out, hook up kelly and pump through the tool under pressure and check for leaks. NOTE: These operating instructions are subject to modification. The most current operating instructions are available in the information packet which accompanies each L.I. Mechanical Drilling Jar.

Interpretation of data presented is responsibility of individuals using data. Weatherford cannot be held responsible for any loss or damage to any property whatsoever; injury or death to any persons whatsoever; or any claims, demands, actions, complaints, proceedings, judgement, losses damages, compensation, liabilities, costs or charges however arising from the unauthorized or undirected use of these specifications.

1999. Weatherford. All rights reserved.

10

WFT-LI_99-A

(10/99)

COMPARISON OF MECHANICAL JARS

The letters "DNT" are milled into the mandrel.

Dailey L.I. Mechanical Jar

Dailey No Torque "DNT" Jar

2000. Weatherford. All rights reserved.

11

WFT_LI-2-DNT

(03/2000)

DAILEY HYDRAULIC DRILLING JARSpline Mandrels

Spline Housing

Connector Hous

s

s

s

s

s

s

Up Anvil Hammer Down Anvil Flow Mandrel Upper Pressure Pis

s

Pressure Housing

s

s s

s

Triggering Valves

Lower Pressure Piston

Wash Mandrel Balance Piston

Balance Housing

s

s

Piston Stop

Bottom Connector

s

DAILEY HYDRAULIC DRILLING JARUtilizing a patented hydraulic time delay/mechanical tripping system, the Dailey Hydraulic Drilling Jar combines downhole reliability and long operating life under a wide range of drilling conditions and hostile environments. Combining the best of both mechanical and hydraulic technologies, the Hydraulic Drilling Jar design features a one piece involute spline mandrel for maximum torque capacity with minimum backlash, and a fluid-isolated high pressure chamber that lubricates and isolates the Jars moving seals, impact shoulders and mandrel, from the destructive effects of downhole formation cuttings, sand or other debris. The Hydraulic Drilling Jar design is virtually unaffected by downhole temperatures and generates little heat itself when jarring, yet it delivers virtually the same time delay in deep, hot holes as it does on the surface. The design also eliminates the need for bleed-off compensation. Therefore the trip load will be the same as the brake load. Dailey Hydraulic Jars are delivered ready to go. The jarring load is controlled and varied at the surface by controlling the overpull. To hit harder, pull harder. To hit lighter, pull lighter.Outside Diameter Inside Diameter(in.)

4 3/4 2 1/16 NC-38 3 1/2 IF 436 21.2 95 32' - 0" 1,200(in.)

4 3/4 2 1/4 NC-38 3 1/2 IF 500 20 85 32' - 0" 1,200 5 1/2 15 400 10.3

6 1/4 2 1/4 NC-46 4 1/2 XH 832 49.3 200 33' - 0" 2,050 6 1/4 16 1/2 400 15.9

6 1/2 2 3/4 NC-50 4 1/2 IF 934 56.2 175 33' - 0" 2,400 6 1/2 17 400 19.6

7 2 3/4 5 1/2 FH 1,200 76.4 220 33' - 0" 3,000 6 1/2 17 400 23.8

7 3/4 3 6 5/8 Reg 1,600 76.4 260 33' - 0" 3,500 7 19 1/2 400 28.3

8 3 6 5/8 Reg. 1,750 105 300 33' - 0" 3,800 7 19 1/2 400 28.3

9 1/2 3 7 5/8 Reg 2,300 160 500 33' - 0" 5,500 7 19 1/2 400 38.5

(in.)

Tool Joint Size (API) Tensile Yield* ( x 1000 lbs.) Torsional Yield* ( x 1000 ft. lbs.) Max. Overpull Up/Down ( x 1000 lbs.) Approx. Length Extended Approx. Weight (lbs.) Free Travel Up/Down Stroke Total Stroke Max. BHT(in.) (ft. - in.)

5 13 1/2 400

( F ) (sq. in.)

Pump Open Area

9.6

* Tensile and torsional yield values are calculated per A.P.I. RP7G based on nominal dimensions and the published yield strength of the material and do not constitute a guarantee, actual or implied.

U.S. Patent No. 4,361,195 and 5,086,853

PROPER OPERATIONSMANDREL CLAMP The HDJ will arrive on location with a hinged Mandrel Clamp (Dog Collar) installed. Leave the Mandrel Clamp installed until the HDJ is ready to go through the rotary. To remove the mandrel clamp, put the jar in tension. Remove the shipping strap and pull the lock pin up until the U shaped latch can be opened. Spread the two body halves and remove the clamp from the jar. Before installing the clamp on the jar, visually inspect all parts for cracks or breakage.

WARNING:

DO NOTUSE CLAMP IF IT IS DAMAGED OR CANNOT BE OPERATED AS DESCRIBED. FAILURE TO OPERATE AS DESCRIBED MAY RESULT IN SERIOUS INJURY.

Install the clamp on the jar with the jar in tension and with the lock pin end up. The latch spring should return the latch to the closed position. Push the lock pin down until the pin head engages the lug. The bottom of the pin can be seen protruding through the lower lug and the latch will be locked closed when the lock pin is fully seated. Install the shipping strap around the clamp.

1999. Weatherford. All rights reserved.

13

WFT-HDJ_99

(10/99)

DAILEY HYDRAULIC DRILLING JARIf the clamp cannot be used, stand the jar and the other components of the stand back in the normal fashion. However, do not release the elevator until the jar closes. To close the jar, slack off and the jar will go to the cocked position with about 9 inches of polished mandrel exposed. Slack off about 9 inches more and wait until the jar falls to the closed position. This will require about 5 minutes with drill collars above the jar and longer if the jar is at the top of the stand. When the jar is closed, there is 1 to 2 inches of polished mandrel exposed. When the stand with the jar is picked up, the jar will go to the cocked position. Suspend the stand about 12 inches above the floor and wait for the jar to fall open. This will require about 5 minutes with drill collars below the jar and longer if the jar is at the bottom of the stand. OPENING THE HDJ ABOVE THE ROTARY If the HDJ should become cocked (9 inches of polished mandrel exposed) on the surface, it can be easily triggered open with a light overpull. Support the weight below the HDJ in the slips and pick up 5,000 lbs. to 10,000 lbs. with the elevators. At this extremely low load it will require about 5 minutes for the HDJ to trigger. (With the HDJ fully extended there will be about 17 inches of polished mandrel exposed.) JAR PLACEMENT IN THE STRING The HDJ can be run in tension or compression. It is mandatory that a minimum 15% safety factor in string weight be run between the HDJ and the weight transition zone. Never run the HDJ as a crossover between the drill collars and the heavy wall pipe, or between collars of different O.D.'s, because these transition points are where excessive stress occurs. Run the same size collar or heavy wall drill pipe directly above and directly below the jar. Avoid running the HDJ below reamers, stabilizers, key-seat wipers, or any other tool with a larger O.D. than the HDJ since this might restrict the jarring function.

CAUTION:

NEVER RUN THE DAILEY HYDRAULIC DRILLING JAR IN CLOSE PROXIMITY TO ANOTHER DAILEY HYDRAULIC DRILLING JAR, OR ANY OTHER TYPE OF JAR.

DRILLING WITH THE DAILEY HYDRAULIC DRILLING JAR IN COMPRESSION The HDJ will normally be in tension when the bit reaches bottom and should be triggered down with a light load in order to avoid any chance of damage to the bit. The recommended procedure is to begin rotating, slack off enough weight so that the jar is only slightly in compression (5,000 lbs. to 15,000 lbs.), and after the jar falls through, slack off to the final drilling weight. Since the jar will cock whenever the string is picked up off bottom, this procedure should be followed each time a connection is made. RUNNING IN The HDJ should always be kept in tension while running in to guard against inadvertent triggering. The HDJ will cock with only slight resistance if it is put in compression. Use care to start and stop slowly when running in to avoid a "yoyo" effect which could cause the HDJ to cock. Run through tight spots and dog legs slowly. Be aware that anything that restricts the I.D. of the pipe or collars below the HDJ (float valves, survey tools, etc.) could cause the collars to "float" if the pipe is lowered too rapidly and could result in cocking the HDJ. If it is suspected that the HDJ has inadvertently cocked, suspend the drill pipe in the elevator long enough for the HDJ to trip open (due to the weight of the collars suspended below it) before running in the hole. JARRING No presetting or adjustment is required before running or prior to jarring. The HDJ is totally controlled from the surface using only axial motion. From the neutral position, pull up to the desired load and wait a few seconds for the HDJ to jar up, or slack off to the desired load and wait a few seconds for the HDJ to jar down. After impact, return the HDJ to neutral and it is immediately ready to jar in the same or in the opposite direction. To hit harder pull harder, to hit lighter pull lighter. There is no other operator action required and the HDJ can be hit in any sequence desired (up only, down only, or up and down).

1999. Weatherford. All rights reserved.

14

WFT-HDJ_99

(10/99)

DAILEY HYDRAULIC DRILLING JARThe waiting time between setting the brake and the jarring action will be in the range of 10-60 seconds and will not be affected by changes in down-hole temperature or hydrostatic pressure or the number of times the HDJ is actuated. It is never necessary to "warm-up" the HDJ or to circulate to "cool it off". DRILLING TORQUE DOES NOT EFFECT THE HDJ. Full torque in either direction can be transmitted at all times without affecting either the magnitude or the time delay of the jarring action. FINDING THE NEUTRAL (OR COCKED) POSITION It is not necessary to slack off (or pull up if jarring down) an exact amount of weight or to control the travel of the jar to recock. The proper travel will occur automatically if sufficient weight is slacked off (or pulled up) to allow the necessary travel at the tool. NOTE: When recocking to jar again in the same direction the time delay of the next blow WILL NOT be affected by overtravel in the direction of neutral. RECOMMENDED PROCEDURE TO CHECK THE HDJ Each trip out of the hole, wash the mud from the polished mandrel and from inside the bottom connection. Check the polished mandrel carefully for any sign of corrosion, pitting, or flaking of the plating. REPLACE THE MANDREL CLAMP while the jar is still in tension. RACKING BACK When the jar comes through the ratary, INSTALL THE MANDREL CLAMP WHILE THE TOOL IS STILL IN TENSION. As a safety precaution, do not stand the jar in the rack with drill collars above it. If racked back as part of a stand, the jar should be the top joint. This will reduce the load on the mandrel clamp to a minimum. Contact your Weatherford representative if you have any questions or if assistance is required concerning the proper operation of the Dailey Hydraulic Drilling Jar.

Interpretation of data presented is responsibility of individuals using data. Weatherford cannot be held responsible for any loss or damage to any property whatsoever; injury or death to any persons whatsoever; or any claims, demands, actions, complaints, proceedings, judgement, losses damages, compensation, liabilities, costs or charges however arising from the unauthorized or undirected use of these specifications.

1999. Weatherford. All rights reserved.

15

WFT-HDJ_99

(10/99)

COMPARISON OF HYDRAULIC JARS

Split Flex JarB 2 3/4" to 3" I.D.

F Flex Jar

B 2 3/4" to 3" I.D.

A

Serial No.

Serial No.

A

Jar O.D.(inches)

Jar I.D.(inches)

Jar Type Std. Big Bore Std. Std. Big Bore Std. Std. Std. Std.

"A" Length 16' - 6" 30' - 0" 30' - 0" 25' - 0" 32' - 6" 32' - 6" 32' - 6" 31' - 6" 32' - 6"

"B" Upper Conn. NA 6' - 6" 6' - 6" 6' - 6" 6' - 4" 6' - 6" 6' - 4" 6' - 4" 6' - 7"

"C" Bottom Conn. 1' - 10" 5' - 8" 5' - 8" 1' - 9" 6' - 9" 6' - 8" 5' - 4" 4' - 8" 4' - 10"

4 3/4 4 3/4 5 1/4 F 6 1/4 6 1/2 7 7 3/4 8 9 1/2

2 1/16 2 1/4 2 1/4 2 1/4 2 3/4 2 3/4 3 3 3

Lengths are affected by connection reworks and may very from these dimensions.

C

2 3/4" to 3" I.D. Refer to Chart C

1999. Weatherford. All rights reserved.

16

WFT_LI-2-DNT

(03/2000)

DAILEY HYDRAULIC DRILLING JARS SPECIAL FEATURESThe Dailey Hydraulic Drilling Jar (HDJ) is a double acting jar designed for simple operation, variable hitting loads and extended periods of continuous jarring. It features a patented hydraulic time delay/mechanical tripping system that overcomes the aggravation of short service life and inconsistent performance usually experienced with conventional hydraulic jars, without sacrificing any of their inherent versatility or simplicity of operation.

FEATURES Straight Pull Operation/Variable Loads - The Dailey HDJ can be tripped in either direction and requires nosurface adjustment or downhole manipulation to vary the hitting load or change the direction of jarring. Simply sit down enough weight to insure that the jar is cocked, pull up (slack off) to the desired jarring load and wait a few seconds for the jar to trip. To hit harder pull harder, or to hit lighter pull lighter. As with a conventional hydraulic jar, the jarring load is controlled and varied at the surface by controlling the overpull. There is no other operator action required and the jar can be activated in any sequence desired (up only, down only or up and down).

Consistent Time Delay - In the normal range of operation, the time delay from when the overpull is first applieduntil the jar trips, will be in the range of 10-60 seconds. Although the actual time delay will vary slightly with more or less overpull, it will not be significantly affected by bottom hole temperature (up to 400 F.) or hydrostatic pressure. This means that at any given overpull, the time delay will be consistent and repeatable from the first actuation until the last. Also, there is never any delay when starting to jar, because unlike conventional hydraulic jars, it is never necessary to warm-up a Dailey HDJ.

No Heat Build-Up - It is characteristic of conventional hydraulic jars that they generate tremendous heat whenoperation. This causes a dramatic increase in the temperature of the hydraulic fluid inside the jar, which can then lead to fast hitting times, shutting down or circulating to cool off the jar, or premature seal failures. The Dailey HDJ, on the other hand, avoids these temperatures related problems because its patented hydraulic time/delay mechanical tripping system generates almost no heat. Two of the benefits of jarring without generating heat are much longer periods of operation and a very consistent time delay.

No Bleed-Off - The mechanical tripping feature of the Dailey HDJ virtually eliminates load bleed-off after thebrake has been set, which in turn, eliminates the need for the dangerous practice of overpulling the jar to compensate for bleed-off. This feature also makes the Dailey HDJs tripping load virtually independent of the speed at which the load is applied. Without bleed-off, the load at which the jar trips will be the load shown when the brake was set, and it does not matter whether pull-up is fast or slow.

Simple Metering Mechanism - The hydraulic metering mechanism of the Dailey HDJ has NO moving parts.It incorporates large flow paths and it is protected from contamination.

Simple, Rugged Construction - The Dailey HDJ incorporates a heavy wall, one piece mandrel with involutesplines for maximum torque capacity and minimum backlash. The splines and all other working parts of the tool are enclosed within the hydraulic chamber where they are fully protected and lubricated.

Unaffected by Drilling Torque - Full torque in either direction can be transmitted at all times without effectingthe magnitude or the time delay of the jarring operation.

Protected Seals - The unique design of the Dailey HDJ protects the high pressure moving seals and seal surfaces from the abrasive and corrosive effect of the well fluids by totally enclosing that portion of the jar within a larger hydraulic chamber. Only low pressure or static seals are exposed to well fluids.

1999. Weatherford. All rights reserved.

17

WFT-hdj-sf_99

(10/99)

DAILEY HYDRAULIC DRILLING JARS SPECIAL FEATURESPROTECTED IMPACT SHOULDERS - When conventional hydraulic jars are impacted in the closed position, the impact usually occurs between a shoulder just below the box thread of the mandrel and an up facing shoulder on the housing. This can result in tool damage because any debris (cuttings, shaving, sand, etc.) in the well annulus can be forced into the high pressure seals or into the spline mechanism just below the impact shoulders, and damaging the shoulders themselves. The design of the Dailey HDJ has eliminated this mode of failure by placing both the up and down impact surfaces inside the hydraulic chamber where they are protected from damage. FAST RECOCKING - No delay in recocking - simple return to neutral and jar again in either direction. SHOP TORQUED - All housing connections are machine tightened to the charted make-up torque to assure no accidental back-offs downhole. SHOP TESTED - All tools are tested after redressing to insure that they are fully operational.

POINTS OF CAUTIONJARS IN TANDEM - Never run the Dailey HDJ in close proximity to another Dailey HDJ or any other type jar. MANDREL CLAMP - The tool is shipped with a split mandrel clamp attached to keep the tool in the extended position until it is suspended from the elevators. DO NOT REMOVE THIS CLAMP UNTIL THE TOOL IS IN TENSION! MANDREL - Protect the exposed section of the mandrel under the mandrel clamp. DO NOT TONG ON THIS SURFACE OR PLACE THIS SURFACE IN THE SLIPS! INADVERTENT COCKING - The tool should always be kept in the extended position when off bottom, especially when above the rotary. The tool will recock without resistance if not kept in tension or if the mandrel clamp is not in place. If the tool is inadvertently cocked on the surface, it can easily be tripped open with as little as 5,000 lbs. At this extremely low load, it requires approximately three (3) minutes for the jar to trip. If it appears that the tool has inadvertently recocked when going in the hole or when on bottom, simply pull up off bottom a few feet and the jar will trip open due to the weight suspended below it. HANGING IN THE SLIPS - The slips should be placed only on the designated areas. TONG SPACE - DO NOT TONG ANY PLACE ON THE TOOL EXCEPT THE TOP AND BOTTOM CONNECTIONS. All service connections are machine tightened before delivery.

PUMP OPEN AREA FOR HYDRAULIC DRILLING JARSJar OD Jar ID Pump Open Area(sq. in.)

4 3/4" 2 1/16" 9.6

4 3/4" 2 1/4" 10.3

6 1/4" 2 1/4" 15.9

6 1/2" 2 3/4" 19.26

7" 2 3/4" 23.8

7 3/4" 3" 28.3

8" 3" 28.3

9 1/2" 3" 38.5

1999. Weatherford. All rights reserved.

18

WFT-hdj-sf_99

(10/99)

DAILEY HYDRAULIC DRILLING JARS SPECIAL FEATURESOPERATING PRINCIPLEWhen jarring, the mandrels move in response to the strain applied at the surface by the draw works, while the housings remain stationary. The movement of the mandrels, in either direction, is resisted by two pressure pistons that oppose each other to define a high pressure chamber. Located between the two pressure pistons is a normally closed triggering valve (consisting of upper and lower valve halves) which controls the dumping of fluid from the pressure chamber. To jar upward, the lower pressure piston moves upward with the mandrels, while the upper pressure piston is prevented from moving by a shoulder in the housings. Sufficient pressure is generated between the pressure pistons to resist the applied pull until the triggering valve is mechanically opened by an actuating device. The time delay (from when the strain is applied until the triggering valve opens) is achieved by a hydraulic metering mechanism that controls the speed at which the lower pressure piston moves toward the upper pressure piston. The lower pressure piston must move a predetermined distance before the actuating devices contact their respective valve halves and force the triggering valve to open. This built in delay is designed to allow the operator sufficient time to pull to the desired load prior to the triggering valve opening. When the triggering valve opens, the high pressure fluid in the pressure chamber that was resisting the overpull, is dumped from the high pressure chamber to the hydrostatic pressure chamber, and there being no further resistance to motion of the mandrel relative to the housing, the jar travels until the hammer impacts the anvil. To jar upward again, the tool is returned to neutral by lowering the drill string and another upstrain applied. This action may be repeated as often as necessary. When jarring downward, a similar but opposite action occurs; i.e., the upper pressure piston moves down with the mandrels in response to the weight applied from the drill string above, while the lower pressure piston is prevented from moving by a shoulder on the housings. In down jarring, triggering occurs when the upper pressure piston has moved sufficiently toward the lower pressure piston to force open the triggering valve. The separate functions of jarring upward or downward may be accomplished in any desired sequence; i.e., up only, down only or up and down.

OPERATING PRINCIPLECAUTION: DO NOT REMOVE MANDREL CLAMP UNTIL THE TOOL IS IN TENSION! PICKING UP - Always use a lift nipple to pick up the tool and a thread protector on the pin thread. MAKING-UP - Although the tool will function the same whichever end is run down, it is recommended that it be run in the normal manner, i.e., box up - pin down. REMOVING THE MANDREL CLAMP - When the tool has been made-up in the drill string, pick up the weight from the slips to place the tool in tension. With the tool in tension, remove the mandrel clamp. Keep the clamp on location to be used when the tool is racked back. RUNNING IN - Use care to start and stop slowly when running in, to avoid a yo-yo effect, which could cause the tool to inadvertently cock. Be aware that running anything that restricts the I.D. of the drill collars below the jar (float valves, survey tools, etc.) can cause the collars to float when the pipe is lowered rapidly and can result in the tool inadvertently cocking.

1999. Weatherford. All rights reserved.

19

WFT-hdj-sf_99

(10/99)

DAILEY HYDRAULIC DRILLING JARS SPECIAL FEATURESDrilling with Jar in Compression - The jar will normally be in tension when the bit reaches bottom and should be tripped down with a light load to avoid damage to the bit. The recommended procedure is to begin rotating. Slack off enough weight so that the jar is only slightly in compression (5,000 lbs. to 10,000 lbs.) and wait for the jar to trip down before slacking off to the final drilling weight. Since the jar will return to neutral whenever the string is picked up, this procedure should be followed each time a connection is made. Pump Open Force - Pressure differential between the drill pipe I.D. and the annulus at the jar, will tend to pump open the tool. In normal drilling, this will have no effect on either the weight on the bit or the jar itself. 6A) If the jar is in tension while drilling, the pump open force will only tend to keep the jar extended. 6B) If the jar is in compression, the pump open force will tend to reduce the weight on the jar but will have no effect on the jar travel until all the weight has been lifted from the jar. Weight Indicator Reading - What is usually called Pump Open Force is really the effect seen at the surface on the weight indicator. It is important to understand that this force occurs at the surface. It is the product of the drill pipe to annulus seal area of the jar and the pressure differential across the jar. Pump Open Force Charts are provided in the Technical Information section, of this catalog. To calculate , use the chart below, multiply the pump open area by the pressure drop across the drill bit to determine the change in weight indicator reading. The Pump Open Force increases the up jar overpull and decreases the down jar overpull. Jarring - The tool is controlled completely with axial motion. From the neutral position, pull up to the desired load and wait for the jar to trip up; or slack off the desired load and wait for the jar to trip down. After impact, return the jar to neutral with motion in the opposite direction until resistance is met. The tool is immediately ready to jar in the same or opposite direction. Time Delay - The time delay is designed to vary from 20 to 60 seconds in the load range of normal jarring. However, at low loads, additional time is available to insure location the neutral position without inadvertently tripping through. If, when returning to neutral, the tool should be inadvertently tripped through, it is only necessary to reverse the axial motion to jar in the desired direction. Pulling Pipe - Exercise caution when pulling the pipe to eliminate any danger associated with the jar tripping unexpectedly. This can occur if the tool is unexpectedly in compression when the bit is lifted off bottom. To guard against unexpected tripping, allow the pipe to hang off bottom long enough for the jar to trip through, due to the action of the load hanging below it, before suspending the pipe from the slips. Racking Back - When the jar comes through the rotary, INSTALL THE MANDREL CLAMP WHILE THE TOOL IS STILL IN TENSION. As a safety precaution, do not stand the jar in the rack with drill collars above it. If racked back as part of a stand, the jar should be the top joint. This will reduce the load on the mandrel clamp to a minimum.

Interpretation of data presented is responsibility of individuals using data. Weatherford cannot be held responsible for any loss or damage to any property whatsoever; injury or death to any persons whatsoever; or any claims, demands, actions, complaints, proceedings, judgement, losses damages, compensation, liabilities, costs or charges however arising from the unauthorized or undirected use of these specifications.

1999. Weatherford. All rights reserved.

20

WFT-hdj-sf_99

(10/99)

DAILEY HYPULSE JAR SLINGER DRILLING

Spline Mandrel

s

Spline Housing

s

Connector Housing

s

s

s

s

Hammer

Flow Mandrel Upper Pressure Piston

Pressure Housing

s s

s

s

Lower Pressure Piston Wash Mandrel Balance Piston

Balance Housing

s

DAILEY HYPULSE JAR SLINGER DRILLINGHYPULSE JAR SLINGER - DRILLING SPECIFICATIONSO u tside Diameter In s id e D ia m e t e r T o o l J o in t S iz e T e n s ile Y i e l d *(in.)

4 3 /4 2 1 /4 N C -38 3 1 /2 IF 500 20 85 32' - 0" 1,200(in.)

6 1 /4 2 1 /4 N C -46 4 1 /2 X H 832 4 9 .3 200 33' - 0" 2,050 8 1 /4 400 1 5 .9

6 1 /2 2 3 /4 N C -50 4 1 /2 IF 934 5 6 .2 175 33' - 0" 2,400 8 1 /2 400 1 9 .6

7 2 3 /4 5 1 /2 F H 1,200 7 6 .4 220 33' - 0" 3000 8 1 /2 400 2 3 .8

7 3 /4 3 6 5 /8 R e g 1,600 7 6 .4 260 33' - 0" 3,500 9 3 /4 400 2 8 .3

8 3 6 5 /8 R e g . 1,750 105 300 33' - 0" 3,800 9 3 /4 400 2 8 .3

9 1 /2 3 7 5 /8 R e g 2,300 160 500 35' - 6" 5,500 9 3 /4 400 3 8 .5

(in.)

(A P I)

( x 1 0 0 0 lb s .)

T o r s io n a l Yie ld *

( x 1 0 0 0 ft. lb s .)

M a x . O v e r p u ll U p /D o w n

( x 1 0 0 0 lb s .)

Approx. Length Extended A p p r o x . W e ig h t(lb s .)

(ft. - in.)

F r e e T r a v e l U p /D o w n S tro k e Max. B H T(F )

7 1 /2 400

P u m p O p e n A rea

(sq. in.)

1 0 .3

* Tensile and torsional yield values are calculated per A.P.I. RP7G based on nominal dimensions and the published yield strength of the material and do not constitute a guarantee, actual or implied.

U.S. Patent No. 5,232,060

PROPER OPERATIONS The Dailey HyPulse Jar Slinger is an energy accumulator used in conjunction with Dailey Drilling Jars to maximize the impact delivered to the stuck point. JAR SLINGER PLACEMENT IN THE STRING The HyPulse Jar Slinger should be run with several joints of heavy weight pipe or drill collars between it and the Jar below. If down jarring is anticipated, several joints of heavy weight pipe or drill collars should also be run above the HyPulse Jar Slinger. It is the weight above the HyPulse Jar Slinger which compresses it when down-jarring and this compression of the fluid within the tool and the weight below it that accelerates the Jar downward after it triggers. It is the strain placed on the drill pipe by the drawworks as the pipe is pulled to actuate the Jar that compresses the HyPulse Jar Slinger when jarring upward. After the Jar triggers, the fluid compressed within the HyPulse Jar Slinger and the stretch of the pipe above it cause the Jar and the pipe above the it to accelerate upward to impact. The HyPulse Jar Slinger is not affected by drilling torque and requires no pipe manipulation other than axial motion to operate.If the HyPulse Jar Slinger is left in tension or compression for an extended period of time, as in normal drilling operations or when the tool is "racked back" it will slowly open or close depending upon which direction it is loaded. Therefore, when beginning the jarring operation, slack off enough weight to insure that the HyPulse Jar Slinger is in compression before pulling a strain on the drill pipe. Also, when conducting extended jarring operations slack off on the HyPulse Jar Slinger in the direction opposite to the jarring direction every twentieth (20) actuation or so to refill the pressure chamber and insure maximum jarring effectiveness. RECOMMENDED PROCEDURE TO CHECK THE HyPulse JAR SLINGER Each trip out of the hole, wash the mud from the polished mandrel and from inside the bottom connection. Check the polished mandrel carefully for any sign of corrosion, pitting, or flaking of the plating.

Interpretation of data presented is responsibility of individuals using data. Weatherford cannot be held responsible for any loss or damage to any property whatsoever; injury or death to any persons whatsoever; or any claims, demands, actions, complaints, proceedings, judgement, losses damages, compensation, liabilities, costs or charges however arising from the unauthorized or undirected use of these specifications.

1999. Weatherford. All rights reserved.

22

WFT-HYP-D_99

(10/99)

DAILEY DUAL-ACTING COILED TUBING JARUpper Connectors

Spline Housing

s

s

Spline Mandrel

Connector Housing

s

Pressure Housing

s

s

s

s

s

s

s

s

Upper Pressure Piston Flow Mandrel Upper Valve Lower Valve Lower Pressure Piston Wash Mandrel Balance Piston

Balance Housing Bottom Connection

s s

DAILEY DUAL-ACTING COILED TUBING JARThe Dailey Dual-Acting Hydraulic Coiled Tubing and Slimhole Jar was designed to meet the needs of the Coiled Tubing Industry. With the field proven hydraulic time delay/mechanical tripping system of the Dailey Hydraulic Drilling Jar, the Dual-Acting Jar with its small outside diameter provides Coiled Tubing Drillers with the quality and performance of the conventional hydraulic drilling jar. As an integral part of the Coiled Tubing drill string the DualActing Jar can provide impacts up or down to help overcome the lack of coiled tubing tensile strength. The DualActing Jar has been designed to meet the requirements of the Coiled Tubing Driller, short ample delay before impact, adequate impact (up/down) and durable for continued operations. Like its predecessors, the Dailey Dual-Acting Hydraulic Jar is ready when you are.

DUAL-ACTING JAR SPECIFICATIONSOutside Diameter Inside Diameter(in.)

1 13/16 3/8 1 13/16 WFJ 70 850 12,000 8' - 0" 60(in.)

2 1/4 5/8 1 1/4 Reg. 110 1,800 25,000 8' - 0" 80 3.5 9.5 400 1.35

2 7/8 3/4 2 3/8 PAC 200 4,000 50,000 8' - 0" 100 3.5 9.5 400 2.24

3 1/8 1 2 3/8 Reg. 240 5,000 50,000 8' - 0" 110 3.5 9.5 400 2.95

(in.)

Tool Joint Size (API) Tensile Yield *( x 1000 lbs.)

Torsional Yield* (ft. lbs.) Max. Overpull Up/Down (lbs.) Approx. Length Extended (ft. - in.) Approx. Weight (lbs.) Free Travel Up/Down Stroke Total Stroke (in.) Max. BHT ( F ) Pump Open Area (sq. in.)

3.5 9.5 400 0.79

* Tensile and torsional yield values are calculated per A.P.I. RP7G based on nominal dimensions and the published yield strength of the material and do not constitute a guarantee, actual or implied.

1999. Weatherford. All rights reserved.

24

WFT-DAJ_99

(10/99)

DAILEY DUAL-ACTING COILED TUBING JARPROPER OPERATIONSOPENING THE DAJ ABOVE THE ROTARY If the DAJ should become cocked (5inches of polished mandrel exposed) on the surface, it can be easily triggered open with a light overpull. Support the weight below the DAJ in the slips and pick up 1,000 lbs. to 2,000 lbs. with the elevators. At this extremely low load it will require about 5 minutes for the HDJ to trigger. (With the DAJ fully extended there will be about 10+ inches of polished mandrel exposed.) JAR PLACEMENT IN THE STRING The DAJ can be run in tension or compression. It is mandatory that a minimum 15% safety factor in string weight be run between the DAJ and the weight transition zone. Never run the DAJ as a crossover between the drill collars and the heavy wall pipe, or between collars of different O.D.'s, because these transition points are where excessive stress occurs. Run the same size collar or heavy wall drill pipe directly above and directly below the jar. Avoid running the DAJ below reamers, stabilizers, key-seat wipers, or any other tool with a larger O.D. than the DAJ, since this might restrict the jarring function.

CAUTION:

NEVER RUN THE DAILEY DUAL-ACTING JAR IN CLOSE PROXIMITY TO ANOTHER DAILEY DUAL-ACTING JAR, OR ANY OTHER TYPE OF JAR.

DRILLING WITH THE DAILEY DUAL-ACTING JAR IN COMPRESSION The DAJ will normally be in tension when the bit reaches bottom and should be triggered down with a light load in order to avoid any chance of damage to the bit. The recommended procedure is to begin rotating, slack off enough weight so that the jar is only slightly in compression (2,000 lbs. to 5,000 lbs.), and after the jar falls through, slack off to the final drilling weight. Since the jar will cock whenever the string is picked up off bottom, this procedure should be followed each time a connection is made. RUNNING IN The DAJ should always be kept in tension while running in to guard against inadvertent triggering. The DAJ will cock with only slight resistance if it is put in compression. Use care to start and stop slowly when running in to avoid a "yoyo" effect which could cause the DAJ to cock. Run through tight spots and dog legs slowly. Be aware that anything that restricts the I.D. of the pipe or collars below the DAJ (float valves, survey tools, etc.) could cause the collars to "float" if the pipe is lowered too rapidly and could result in cocking the DAJ. If it is suspected that the DAJ has inadvertently cocked, suspend the drill pipe in the elevator long enough for the DAJ to trip open (due to the weight of the collars suspended below it) before running in the hole. JARRING No presetting or adjustment is required before running or prior to jarring. The DAJ is totally controlled from the surface using only axial motion. From the neutral position, pull up to the desired load and wait a few seconds for the DAJ to jar up, or slack off to the desired load and wait a few seconds for the DAJ to jar down. After impact, return the DAJ to neutral and it is immediately ready to jar in the same or in the opposite direction. To hit harder pull harder, to hit lighter pull lighter. There is no other operator action required and the DAJ can be hit in any sequence desired (up only, down only, or up and down). The waiting time between setting the brake and the jarring action will be in the range of 10-60 seconds and will not be affected by changes in down-hole temperature or hydrostatic pressure or the number of times the DAJ is actuated. It is never necessary to "warm-up" the DAJ or to circulate to "cool it off". DRILLING TORQUE DOES NOT EFFECT THE DAJ. Full torque in either direction can be transmitted at all times without affecting either the magnitude or the time delay of the jarring action.

1999. Weatherford. All rights reserved.

25

WFT-DAJ_99

(10/99)

DAILEY DUAL-ACTING COILED TUBING JARFINDING THE NEUTRAL (OR COCKED) POSITION It is not necessary to slack off (or pull up if jarring down) an exact amount of weight or to control the travel of the jar to recock. The proper travel will occur automatically if sufficient weight is slacked off (or pulled up) to allow the necessary travel at the tool. NOTE: When recocking to jar again in the same direction the time delay of the next blow WILL NOT be affected by overtravel in the direction of neutral. RECOMMENDED PROCEDURE TO CHECK THE DAJ Each trip out of the hole, wash the mud from the polished mandrel and from inside the bottom connection. Check the polished mandrel carefully for any sign of corrosion, pitting, or flaking of the plating. REPLACE THE MANDREL CLAMP while the jar is still in tension.

Contact your Weatherford representative if you have any questions or if assistance is required concerning the proper operation of the Dailey Dual-Acting Jar.

Interpretation of data presented is responsibility of individuals using data. Weatherford cannot be held responsible for any loss or damage to any property whatsoever; injury or death to any persons whatsoever; or any claims, demands, actions, complaints, proceedings, judgement, losses damages, compensation, liabilities, costs or charges however arising from the unauthorized or undirected use of these specifications.

1999. Weatherford. All rights reserved.

26

WFT-DAJ_99

(10/99)

DAILEY HYPULSE JAR SLINGER COILED TUBING

Spline Mandrel

s

Spline Housing

s

Connector Housing

s

s

s

s

Hammer

Flow Mandrel Upper Pressure Piston

Pressure Housing

s s

s

s

Lower Pressure Piston Wash Mandrel Balance Piston

Balance Housing

s

DAILEY HYPULSE JAR SLINGER COILED TUBINGHYPULSE JAR SLINGER - COILED TUBING SPECIFICATIONSOutside Diameter (in.) Inside Diameter (in.) Tool Joint Size (API) Tensile Yield * (lbs.) Torsional Yield * (ft. lbs.) Max. Overpull Up/Down (lbs) Approx. Length Extended (ft.) Approx. Weight (lbs.) Total Stroke (in.) Max. Circulating PSI Max. Hydrostatic PSI Max. BHT (deg. F) Pump Open Area (sq. in.) 3 1/8 1 2 3/8 Reg. 240,000 5,000 50,000 12 165 9.5 5,000 None 400 2.95 2 7/8 3/4 2 3/8 Reg. 200,000 4,000 50,000 10' - 10" 131 9.5 5,000 None 400 2.24

* Tensile & torsional yield values calculated per A.P.I. RP7G based on nominal dimensions & published yield strength of material and do not constitute a guarantee, actual or implied. U.S. Patent No. 5,232,060

PROPER OPERATIONS The HYPULSE JAR SLINGER is an energy accumulator used in conjunction with Dailey Dual-Acting Jars to maximize the impact delivered to the stuck point. SLINGER PLACEMENT IN THE STRING The slinger should be run with several joints of heavy weight pipe or weight bars between it and the Jar below. If down jarring is anticipated, several joints of heavy weight pipe or weight bars should also be run above the slinger. It is the weight above the slinger which compresses it when down-jarring and this compression of the fluid within the tool and the weight below it that accelerates the Jar downward after it triggers. It is the strain placed on the drill pipe by the drawworks as the pipe is pulled to actuate the Jar that compresses the slinger when jarring upward. After the Jar triggers, the fluid compressed within the slinger and the stretch of the pipe above it cause the Jar and the pipe above the it to accelerate upward to impact. The slinger is not affected by drilling torque and requires no pipe manipulation other than axial motion to operate. If the slinger is left in tension or compression for an extended period of time, as in normal drilling operations or when the tool is "racked back" it will slowly open or close depending upon which direction it is loaded. Therefore, when beginning the jarring operation, slack off enough weight to insure that the slinger is in compression before pulling a strain on the drill pipe. Also, when conducting extended jarring operations slack off on the slinger in the direction opposite to the jarring direction every twentieth (20) actuation or so to refill the pressure chamber and insure maximum jarring effectiveness. RECOMMENDED PROCEDURE TO CHECK THE HYPULSE JAR SLINGER Each trip out of the hole, wash the mud from the polished mandrel and from inside the bottom connection. Check the polished mandrel carefully for any sign of corrosion, pitting, or flaking of the plating.

Interpretation of data presented is responsibility of individuals using data. Weatherford cannot be held responsible for any loss or damage to any property whatsoever; injury or death to any persons whatsoever; or any claims, demands, actions, complaints, proceedings, judgement, losses damages, compensation, liabilities, costs or charges however arising from the unauthorized or undirected use of these specifications.

1999. Weatherford. All rights reserved.

28

WFT-HYP-CT_99

(10/99)

DAILEY HYDRAULIC FISHING JARSpline Mandrels

Spline Housing

s

Connector Housing

s

s

s

Hammer

Valve

Pressure Housing

s

s

s

s

Pressure Piston Wash Mandrel Balance Piston

Bottom Connector

s

DAILEY HYDRAULIC FISHING JARFishing environments and high temperatures are no threat to the reliable operation of this combination Hydraulic time delay/Mechanical triggering fishing jar. Utilizing a patented hydraulic time delay/mechanical triggering system, the Dailey Hydraulic Fishing Jar combines reliability and long operating life under a wide range of fishing conditions and environments. The Hydraulic Fishing Jar design features a one peice involute spline for a maximum torque capacity with minimum backlash, and a fluid-isloated high pressure chamber that lubricates and isolates the Jars moving seals, impact shoulders and mandrel from destructive effects of downhole formation cuttings, sand and other debris. The Hydraulic Fishing Jar design, being only slightly affected by downhole temperatures and generating little heat itself when jarring, delivers virtually the same time delay in deep, hot holes as it does on the surface. The design also eliminates the need for bleed-off compensation. The trip load will be the same as the brake load. Dailey Hydraulic Fishing Jars are delivered to site ready to go. Your jarring load is controlled and varied at the surface by controlling the overpull. To hit harder, pull harder. To hit lighter, pull lighter.

HYDRAULIC FISHING JAR SPECIFICATIONSOutside Dia. Inside Dia. Tool Joint(x 1000 lbs.) (in.)

1 13/16 1/2 1 13/16 WFJ 75 1.6 20 7'-0" 50 4 5 1/2 400 1.1

2 1/4 11/16 1 1/4 Reg 110 2.5 30 7'-10" 80 4 6 400 1.8

3 1/8 1 1/4 2 3/8 Reg 250 5.0 45 9'-0" 180 4 1/4 6 1/8 400 4.0

3 1/8 1 1/2 2 7/8 PAC 200 5.0 35 8'-8" 180 4 6 400 4.0

3 3/4 1 3/4 2 3/8 IF 275 7.8 45 9'-0" 222 4 1/4 6 1/8 400 5.9

3 3/4 1 15/16 2 3/8 EUE 225 3.75 45 9'-0" 230 4 1/4 6 1/8 400 5.9

4 1/4 2 1/8

4 3/4 2 1/4

6 1/4 2 1/4

6 1/2 2 3/4

7 3/4 3 6 5/8 Reg 1,600 100 260 13'-10" 2,000 7 1/2 9 3/4 400 28.3

(in.)

(API)

2 7/8 IF 3 1/2 IF 4 1/2 IF 4 1/2 IF 325 15 55 9'-0" 290 4 1/2 6 1/4 400 7.7 500 20 85 9'-11" 400 5 7 400 10.3 1,000 49.3 200 12'-2" 800 5 8 1/4 400 15.9 1,000 56.2 175 12'-9" 1000 6.5 8 1/2 400 19.6

Tensile Yield * Torsional Yield *(x 1000 ft. lbs.)

Max. Overpul l(x 1000 lbs.)

LengthClosed (ft.-in.)

Weight (lbs.) Free Travel Total Stroke Max. BHT(sq. in.) (in.)

(in.)

( F )

Pump Open Area

* Tensile and torsional yield values are calculated per A.P.I. RP7G based on nominal dimensions and the published yield strength of the material and do not constitute a guarantee, actual or implied.

U.S. Patent No. 4,498,548

PROPER OPERATIONSDELIVERY TO LOCATION The Dailey Hydraulic Fishing Jar is delivered to location with the mandrel in the closed position. The fully closed position will leave an approximate 1" gap between the bottom of the box end of the mandrel and the top of the upper housing. This design feature prevents debris, in the well bore fluid, from being driven into the upper seals when the Jar is recocked. If there is a gap of more than one inch (1") or the mandrel is in the open position (about 5 1/2" to 8 1/4" inches of mandrel exposed, depending on Jar size) contact your Dailey Representative. Always check for any visible indications that the Jar has been leaking. All service breaks on the Dailey Hydraulic Fishing Jar are torqued at the Service Center and do not require further tightening before running it in the hole. Also do not break any connections when laying the Jar down.

1999. Weatherford. All rights reserved.

30

WFT-HFJ_99

(10/99)

DAILEY HYDRAULIC FISHING JARPICKING UP AND LAYING DOWN The Dailey Hydraulic Fishing Jar is handled in the same manner as any other Fishing Jar. Tie pick up line around the middle of the Jar and make sure that it is balanced when being hoisted to the rig floor. Do not use the gap at the top of the Jar as a tie on point when picking the tool up or when laying it down. If necessary, use a tailing rope to control the motion when the Jar is being picked up or laid down. Use thread protectors while handling the Jar; do not allow the pin or box connections to be abused during handling. Damage to the connection may lead to a) improper makeup torque on the connection, b) galling of the threads, or c) connection washout. APPLICATIONS - FISHING The Dailey Hydraulic Fishing Jar is used in all fishing, coring, washover etc., applications where the Operator needs to deliver an upward impact to a stuck point, tight spot, or to break off a core before retrieving it from the well bore. The unique design of the Dailey Hydraulic Fishing Jar allows it to be used in deep, deviated, high temperature holes without compromising performance. The design eliminates internal generation of heat created during jarring periods. This means uninterrupted jarring without waiting for the Jar to cool down or for the viscosity of the oil to return to normal. No heat buildup results in longer packing and seal life, extending the time the Jar can remain downhole. The Jar has virtually no bleed off, therefore, it does not have to be overpulled to compensate for bleed off. Simply pick up the drill string to the desired load, within specifications for the Jar size, and set the brake. The Jar will trip at the desired load. Jar warm up is not required for it to operate properly. The overall tripping times, at load, remain consistent within a few seconds, from first actuation until the last actuation. Large free-flow paths allow the Jar to be recocked as fast as the string can be lowered without damaging the internal seals or bursting any of the body housings. Recocking takes no pre-load, only enough weight to overcome internal seal friction is required to recock the Jar. The Jar requires only axial manipulation of the String. The rugged involute spline system prevents downhole torque from interfering with the tripping times of the Jar. The overpull to the Jar is infinitely variable from zero to the overpull limits established for the particular size. This allows the Operator complete control of the impact to the fish, simply by adjusting the pull on the string. Overall tripping times are a function of overpull. The greater the overpull, the quicker the jar will trip. APPLICATIONS - DRILLING The Dailey Hydraulic Fishing Jars design allows the tool to be used as a Slim Hole Drilling Jar. When using the Jar for slim hole drilling, Dailey recommends that only the 4 1/4" & 3 3/4" O.D. Jars be rotated by the drill string, through the use of the rig rotary table, top drive system or a power swivel. It is also recommended that the 3 1/8", 2 1/4" & 1 13/16" O.D. Jars be run in a drill string that has a downhole drilling motor, positioned below the Dailey Hydraulic Fishing Jar to provide rotation to the bit. All the benefits listed above, for the Dailey Hydraulic Fishing Jar during fishing applications, are valid when the Jar is used in the drilling mode. The Dailey Hydraulic Fishing Jar is an Up Only Jar. For use in the drilling mode, where a downward impact may be required, Dailey recommends that a Dailey Lubricated Bumper Sub be run with the Hydraulic Fishing Jar. POSITIONING IN THE STRING - FISHING When using the Jar in a fishing string, Dailey recommends that the Jar be run with a Dailey Hydraulic Lubricated Bumper Sub and HyPulse Jar Slinger. The Jar is run in the lower portion of the BHA, just above the fishing tools and the Dailey Lubricated Bumper Sub. Dailey recommends three (3) to five (5) drill collars or joints of heavy weight drill pipe placed immediately above the Jar, for use as a Hammer. This is only a suggestion and the on-site operator may want to place more or less Hammer above the Jar depending on the needs of the operation. If a Dailey HyPulse Jar Slinger is run in the fishing string, it needs to be positioned at the top of the drill collars or HWDP being used as a Hammer.

1999. Weatherford. All rights reserved.

31

WFT-HFJ_99

(10/99)

DAILEY HYDRAULIC FISHING JARPOSITIONING IN THE STRING - DRILLING When using the Jar as a slim hole drilling jar, remember that the Fishing Jar is an up only Jar and if a downward impact is needed it must be run with a Dailey Lubricated Bumper Sub. Typically Dailey has recommended that the Bumper Sub be positioned immediately below the Fishing Jar. However, this component arrangement allows the Operator to place several drill collars or HWDP between the Hydraulic Fishing Jar and the Lubricated Bumper Sub, if the situation warrants. When using the Jar as a slim hole drilling jar, Dailey recommends placing it at the top of the BHA, and running it in tension. The BHA should be designed to ensure that the placement of the Jar follows the same guidelines as those used when running a Dailey Hydraulic Drilling Jar. Place enough weight below Jar, equal to 120% of Weight on Bit. The Jar should never be placed in the Transition Zone. Place three (3) to five (5) drill collars above the Jar for an effective Hammer. Dailey does not recommend using the Jar as a crossover between the drill collars and drill pipe.Hammer Section(10/99)

Dailey does not recommend placing the Jar adjacent to any stabilization in the BHA. INSTALLATION IN THE STRING - FISHING The Dailey Hydraulic Fishing Jar is installed in the string in the same manner as any other BHA component. The Jar is installed with pin connection down and box connection up. All service breaks are torqued to manufacturers recommended value, therefore, the only connections that need to be tightened are the box & pin connections that connect the Jar to the other components of the BHA or fishing assembly. Always unlock the rotary and use two pairs of tongs when making the Jar up in the string or breaking the Jar out of the string. Never use the rotary to break the torque on the connection or to back into the Jar when making it up in the String. A Drill Collar Safety Clamp must be installed on the Jar above the slips if the Jar is left unsupported in the rotary table. This is to prevent the Jar from sliding through the slips. When making up or breaking out, position the Jar as low in the slips as possible, leaving enough room to install the Drill Collar Safety Clamp and get the tongs on the Jar. This will help to prevent bending or breaking of the Jar due to lateral forces exerted on the it by use of conventional make up or break out tongs. If power tongs are being used this should not be a problem. Dailey recommends that the Jar be run in the hole in the Stretched Open position. Dailey does not recommend racking back the Hydraulic Fishing Jar in the derrick. Whether in a fishing or drilling application, Dailey recommends when the string is out of the hole, the Jar be removed from the string and laid down. DOWN HOLE OPERATION - FISHING The downhole actuation of the Jar requires only the raising and lowering of the fishing string. To deliver an upward blow, slack off on the string until the end of the free travel is observed on the Weight Indicator. Raise the drill string until the indicated weight equals the calculated weight of the fishing string. To jar up, continue to pull on the fishing string until the desired jarring load is shown on the Weight Indicator. Set the brake and wait for the Jar to trip. It is important to stay within the overpull limits set forth in the specifications for the particular Jar size. Exceeding the overpull limits of the Jar may damage it and render it inoperable. After the Jar has tripped, the Operator can pull the string to the tensile limits of the Jar without damaging the tool. Lower the Jar to recock and repeat the jarring process as needed. The String may be lowered as fast as the Operator desires, with no adverse effects to the Dailey Hydraulic Fishing Jar. MAINTENANCE IN THE STRING The Dailey Hydraulic Fishing Jar is a rugged, dependable downhole impact tool that requires very little maintenance while on the job. To insure maximum performance, Dailey recommends on each trip out of the hole, the rig crew wash off the mandrel of the Jar and the top of the upper housing where the mandrel goes through the upper seals. Unscrew the Jar from the BHA at the pin end and wash with water both the I.D. of the pin and around the compensating piston.

Interpretation of data presented is responsibility of individuals using data. Weatherford cannot be held responsible for any loss or damage to any property whatsoever; injury or death to any persons whatsoever; or any claims, demands, actions, complaints, proceedings, judgement, losses damages, compensation, liabilities, costs or charges however arising from the unauthorized or undirected use of these specifications.

1999. Weatherford. All rights reserved.

32

WFT-HFJ_99

Fishing Tools

Bumper Sub

Fishing Jar

Slinger

DAILEY HYPULSE JAR SLINGER FISHINGSpline Mandrels

Spline Housing

s

Connector Housing

Fluid Housing

s

s

s

Hammer

s

Flow Mandrel

s

Pressure Housing

s

Pressure Piston Wash Mandrel Balance Piston

Bottom Connection

s

s

s

DAILEY HYPULSE JAR SLINGER FISHINGHYPULSE JAR SLINGER - FISHING SPECIFICATIONSOutside Diameter (in.) Inside Diameter (in.) Tool Joint (API) Tensile Yield*( x 1000 lbs.)

1 13/16 1/2 1 13/16 WFJ 75 1.6 20 7' - 0" 50 5 1/2 400 0.4

2 1/4 11/16 1 1/4 Reg 110 2.5 30 8' - 9" 100 6 400 0.8

3 1/8 1 1/4

3 1/8 1 1/2

3 3/4 1 3/4 2 3/8 IF 275 7.8 45 9' - 10" 242 6 1/8 400 4.4

3 3/4 1 15/16 2 3/8 EUE 225 3.75 45 9' - 10" 224 6 1/8 400 4.4

4 1/4 2 1/8 2 7/8 IF 325 15 55 9' - 10" 316 6 1/4 400 5.4

4 3/4 2 1/4 3 1/2 IF 500 20 85 9' - 10" 440 7 400 6.5

6 1/4 2 1/4 4 1/2 IF 832 49.3 200 13' - 6" 1,000 8 1/4 400 7.7

6 1/2 2 3/4 4 1/2 IF 1,000 56.2 175 15' - 0" 1,200 8 1/2 400 11.0

7 3/4 3 6 5/8 Reg 1,600 100 260 15' - 7" 2,000 9 3/4 400 14.2

2 3/8 Reg 2 7/8 PAC 250 5.0 45 9' - 10" 198 6 1/8 400 2.4 200 5.0 35 9' - 8" 175 6 400 2.8

Torsional Yield *(x 1000 ft. lbs.)

Max. Overpull(x 1000 lbs.)

LengthClosed (ft. - in.)

Weight (lbs.) Total Travel (in.) Max. BHT ( F ) Pump Open Area(sq. in.)

* Tensile and torsional yield values are calculated per A.P.I. RP7G based on nominal dimensions and the published yield strength of the material and do not constitute a guarantee, actual or implied.

U.S. Patent No. 4,498,548

PROPER OPERATIONSTool specification sheets are available from a Dailey Representative. These specifications are provided to the operators of each job. Dailey recommends that the operator NOT EXCEED these specifications when using the Dailey HyPulse Jar Slinger. Should additional information be required or questions arise, contact your local Dailey Representative for assistance. DELIVERY TO LOCATION The Dailey HyPulse Jar Slinger is delivered to location with the mandrel in the closed position. The fully closed position will leave an approximate 1" gap between the bottom of the box end of the mandrel and the top of the upper housing. This design feature prevents debris, in the well bore fluid, from being driven into the upper seals when the Slinger is completely closed. If there is a gap of more than one inch and a quarter (1 1/4") when delivered to the location contact your nearest Dailey representative.Always check for any visible indications that the Slinger has been leaking. All service breaks on the Dailey HyPulse Jar Slinger are torqued to specifications at the Service Center and do not require further tightening before running it in the hole. Also do not break any connections when laying the Slinger down. PICKING UP AND LAYING DOWN The Dailey HyPulse Jar Slinger is picked up and laid down in the same manner as any other Accelerator or Intensifier. Tie the pick up line around the middle of the Slinger and make sure that it is balanced when being hoisted to the rig floor. Do not use the gap at the top of the Slinger as a tie on point when picking the tool up or laying it down. If necessary, use a tailing rope to control the motion when the Slinger is being picked or laid down. Use the thread protectors while handling the Slinger; do not allow the pin or box connections to be abused during handling. Damage to the connection could lead to: a) improper makeup torque on the connection, b) galling of the threads, or c) connection washout. APPLICATIONS The Dailey HyPulse Jar Slinger is specifically designed to be run with the Dailey Hydraulic Fishing Jar. The Slinger uses a compressible synthetic oil as a fluid spring to store energy that is released when the tripping mechanism in the Dailey Hydraulic Fishing Jar opens. This action allows the internal mandrel/hammer assembly of the Jar to travel unimpeded until it strikes the anvil, resulting in an sharp upward impact to the stuck point.

1999. Weatherford. All rights reserved.

34

WFT-HYP-F_99

(10/99)

DAILEY HYPULSE JAR SLINGER FISHINGAPPLICATIONS (cont.) The design of the Dailey HyPulse Jar Slinger allows it to be used in deep, deviated, high temperature holes ensuring optimum performance of the Dailey Hydraulic Fishing Jar.The Dailey HyPulse Jar Slinger is the answer for those situations when additional stored energy is required above that supplied by the stretch of the fishing string when it is stuck. (ie. shallow depths where larger drill collars or drill pipe are being used)In deviated and horizontal type holes it may become necessary to employ a Slinger to counteract the drag induced by wall

contact on the heavyweight pipe or drill collars used above the Hydraulic Fishing Jar. The Dailey HyPulse Jar Slinger permits the operator to utilize fewer drill collars in his fishing string than he would normally use.The use of a Dailey HyPulse Jar Slinger provides the added benefit of reducing the shock impact on the fishing string above its point of installation; therefore reducing the shock impact on the surface equipment. This feature is highly beneficial on rigs equipped with Top Drives. POSITIONING IN THE STRING The Dailey HyPulse Jar Slinger should be positioned above the drill collars or heavy weight drill pipe that serve as the hammer for the Hydraulic Fishing Jar. INSTALLATION IN THE STRING The Dailey HyPulse Jar Slinger is installed in the same manner as any other BHA component. The Slinger is installed with pin connection down and box connection up. All Service Breaks are torqued to manufacturers recommended value, therefore, the only connections that need to be tightened are the box & pin connections that connect it to the other components of the BHA or fishing assembly. Always unlock the rotary and use two pair of tongs when making the Slinger up in the string or breaking it out of the string. Never use the rotary to break the torque on the connection or to back into the Slinger when making it up in the string. A Drill Collar Safety Clamp must be installed on the Slinger above the slips if it is left unsupported in the rotary table. This is to prevent the Slinger from sliding through the slips. When making up or breaking out, position the Slinger as low in the slips as possible leaving enough room to install the Drill Collar Safety Clamp and get the tongs on the Slinger. This will help to prevent bending or breaking of the Slinger due to lateral forces exerted on the it by use of conventional make up or break out tongs. If power tongs are being used this should not be a problem. STAND BACK PROCEDURES Dailey does not recommend that the Dailey HyPulse Jar Slinger be racked back in the derrick while the string is out of the hole. In fishing or drilling applications, Dailey recommends that when the string is out of the hole and the Slinger will not remain suspended in the elevators that it be removed from the string and laid down. DOWN HOLE OPERATION The downhole activation of the Dailey HyPulse Jar Slinger requires only the raising of the string. After the slack has been taken out of the string and it has been stretched to published specifications, the Slinger will start to compress the fluid inside the tool and store energy in the tool itself. This energy along with the energy stored in the stretched string will automatically be released when the Jar trips and allows free travel of the mandrel. The string can be raised or lowered as fast as the operator desires with no adverse effect on the Dailey HyPulse Jar Slinger. NOTICE: AFTER OPERATING FOR A WHILE, THE TOOL MAY APPEAR TO BOTTOM OUT, THIS IS A NATURAL OCCURRENCE BECAUSE OF THE UNIQUE DESIGN OF THE TOOL. T HE PROCEDURE FOR RESETTING THE SLINGER IS SIMPLE. W HEN THE OPERATOR SLACKS DOWN TO CLOSE THE JAR & BUMPER SUB, HE SHOULD SLACK DOWN A LITTLE FURTHER TO MAKE SURE THAT THE SLINGER IS COMPLETELY CLOSED. THIS WILL RESET THE PISTON IN THE SLINGER TO BOTTOM AND RETURN THE TOOL TO NORMAL OPERATION.

1999. Weatherford. All rights reserved.

35

WFT-HYP-F_99

(10/99)

DAILEY HYPULSE JAR SLINGER FISHINGROUTINE MAINTENANCE IN THE STRING The Dailey HyPulse Jar Slinger is a rugged, dependable downhole tool that requires very little maintenance on the job. To ensure maximum performance Dailey recommends that on every trip out of the hole, the rig crew use the water hose to wash off the mandrel of the Slinger and the top of the upper housing where the mandrel goes through the upper seals. Unscrew the Slinger from the string at the pin end and wash with water both the I.D. of the pin and around the compensating piston.

Interpretation of data presented is responsibility of individuals using data. Weatherford cannot be held responsible for any loss or damage to any property whatsoever; injury or death to any persons whatsoever; or any claims, demands, actions, complaints, proceedings, judgement, losses damages, compensation, liabilities, costs or charges however arising from the unauthorized or undirected use of these specifications.

1999. Weatherford. All rights reserved.

36

WFT-HYP-F_99

(10/99)

DAILEY LUBRICATED BUMPER SUBSpline Mandrels

Spline Housing

s

Connector Housing

Balance Housing

s

s

s

s

Hammer

s

Balance Piston

Wash Mandrel

Bottom Connector

s

DAILEY LUBRICATED BUMPER SUBThe Dailey Lubricated Bumper Sub provides better control in directional holes, improved bit life and greatly reduced bottom hole assembly vibration. By providing a more subdued up or down bump to the fishing string, the Bumper Sub also aids in disengaging a fish after retrieval. It also serves as a free point indicator that can help the operator latch onto the fishing tool. Utilizing the field-proven reliability of the Dailey single piece mandrel and the torque and debris isolation system used in our full scale jars, the Lubricated Bumper Sub has proven itself a world-class performer in most fishing situations. The Lubricated Bumper Sub can be used in high angle, shallow or deep wells, including high temperature/high pressure formations. It can be used in cased or open holes to recover bottom hole assemblies, tubing and packers as well as in slimhole and coiled tubing drilling. The Bumper Sub is also easily transportable.

LUBRICATED BUMPER SUB SPECIFICATIONSOutside Diameter (in.) Inside Diameter (in.) T Joint Size (API) ool T ensile Y ield*( x 1000 lbs.)

2 1/4 11/16 1 1/4 Reg 110 2.5 8' - 4" 85 12 400 1.8

3 1/8 1 1/4 2 3/8 Reg 250 5.0 9' - 2" 184 16 400 4.0

3 1/8 1 1/2 2 7/8 PAC 200 5.0 9' - 4" 175 16 400 4.0

3 3/4 1 3/4 2 3/8 IF 275 7.8 9' - 4" 230 16 1/8 400 5.9

3 3/4 1 15/16 2 3/8 EUE 225 3.75 9' - 4" 230 16 1/8 400 5.9

4 1/4 2 1/8 2 7/8 IF 325 15 9' - 0" 290 16 400 7.7

4 3/4 2 1/4 3 1/2 IF 500 20 11' - 0" 440 15 400 10.3

6 1/4 2 1/4 4 1/2 IF 832 49.3 12' - 0" 1,000 16 1/2 400 15.9

6 1/2 2 3/4 4 1/2 IF 934 56.2 13' - 4" 1,200 17 400 19.6

7 3/4 3 6 5/8 Reg 1,600 100 14' - 11" 1,600 19 1/2 400 28.3

T orsional Y ield*( x 1000 ft. lbs.)

LengthClosed (ft. - in.)

Weight (lbs.) T otal Travel (in.) Max. BHT ( F) Pump Open Area(sq. in.)

* Tensile and torsional yield values are calculated per A.P.I. RP7G based on nominal dimensions and the published yield strength of the material and do not constitute a guarantee, actual or implied.

PROPER OPERATIONDELIVERY TO LOCATION The Dailey Lubricated Bumper Sub is delivered to location with the mandrel in the closed position. The fully closed position will leave an approximate 1" gap between the bottom of the box end of the mandrel and the top of the upper housing. This design prevents debris from the well bore fluid from being driven into the upper seals when the Bumper Sub is closed. If there is a gap of more than one inch (1"), apply a light downward force to close the Bumper Sub. Always check for any visible indications that the Bumper Sub has been leaking. All service breaks on the Dailey Lubricated Bumper Sub are torqued at the Service Center and do not require further tightening before running it in the hole. Also do not break any connections when laying the Bumper Sub down.

1999. Weatherford. All rights reserved.

38

WFT-LBS_99

(10/99)

DAILEY LUBRICATED BUMPER SUBPICKING UP AND LAYING DOWN Picking the Bumper Sub up and laying it down should be handled in the same manner as other jarring tools. Because the Bumper Sub is a sliding mandrel in a sleeve there are some special handling guidelines. Always tie the pick up line around the middle of the Bumper Sub and make sure that it is balanced when being hoisted to the rig floor. Never tie on to just one end of the Bumper Sub, this may allow the mandrel to extend unexpectedly. Do not use the gap at the top of the Bumper Sub as a tie on point when picking the tool up or when laying it down. If necessary, use a tailing rope or chain to control the motion of the Bumper Sub while it is being picked up or laid down. Use thread protectors while handling the Bumper Sub, do not allow the pin or box connections to be abused during handling. Damage to the connection will lead to: a) improper makeup torque on the connection, b) galling of the connection or c) wash out of the connection. APPLICATIONS - FISHING The Lubricated Bumper Sub can be used in any application (fishing, coring, washover, etc.) where the operator requires a downward blow to a stuck point, tight spot, to release fishing tools, to activate shearing mechanisms or to break off a core before retrieving it. The Bumper Sub is also capable of providing an upward blow to a stuck point. The Bumper Sub allows the operator to feel for the top of a Fish without applying excess weight. When used with cutting tools the sliding sleeve effect of the Bumper Sub will allow the operator to adjust the weight to the cutting tool and prevent overloading or stalling. To increase the impact up or down the operator, through manipulation of the fishing string, can use the rebound of the string to increase impact values. APPLICATIONS - DRILLING The Dailey Lubricated Bumper Sub has also been used together with the Dailey Hydraulic Fishing Jar as a Slim Hole Drilling Jar. The Bumper Sub is made up on the bottom of the Fishing Jar and run as a combination tool. The rugged involute splines