Drilling & Down-hole Completion Tools

PLUGS ANTI-ROTATION TOP & BOTTOM PLUGS MODEL: WC-TP-AR & WC-BP-AR PRODUCT No.: WC-30501 & WC-30601 Top & Bottom Cementing Plugs are designed to decrease drill out time. This series of cementing plugs use reinforced locking teeth built into the plugs, which lock together between the plugs and the float equipment to eliminate rotation of the plugs during drill out. The body of the plugs is manufactured using a plastic core which eliminates aluminum and large mass of rubber found in conventional cementing plugs. No metal parts are used and the plugs are completely PDC (polycrystalline diamond compact) drillable. STANDARD TOP & BOTTOM PLUGS MODEL: WC-TP & WC-BP PRODUCT No.: WC-30502 & WC-30602 Top Cementing Plug and Bottom Cementing Plug are designed to replace conventional cementing plug systems. By replacing the aluminum and rubber core material in conventional plugs with a large crushable plastic core most of the rubber is eliminated, allowing the drill bit to fracture the plastic rather than tear the rubber and aluminum thus significantly reducing drill out times. These plugs are PDC drillable. TOP & BOTTOM PLUGS WITH ALUMINIUM CORE MODEL- WC-TP-AC & WC-BP-AC PRODUCT No.- WC-30503 & WC-30603 Top Plug Aluminum Core and Bottom Plug Aluminum Core are manufactured with an aluminum insert and are rubber coated. The plugs are available in 4 1⁄2" to 20". The top plug is manufactured in black natural rubber and the bottom plug in orange with rupture diaphragm at 300 psi differential. Operating range is up to 2750 F. Plugs can be ordered in Viton allowing for higher operating temperatures and are operational in either synthetic or mud fluids. LATCH DOWN WIPER PLUG & RECEIVER PLATE MODEL: WC-WPLD & WC-RPE PRODUCT No.: WC-30801 & WC-31002 Latch down Wiper Plug and Receiver Plate is an effective method of providing a positive sealing check valve in combination with a displacement plug. The receiver plate is designed to screw into a short 8 round threaded casing coupling and receive the latch-in plug after displacement has been completed. The receiver plate features a unique check valve to allow for trapped fluid which normally causes a hydraulic lock to be dispersed during the latch-in procedure. The plug and receiver plate are manufactured from drillable materials. Receiver plates can also be ordered for threaded casing collars is available in casing sizes 41⁄2" through 13 3⁄8" and tubing sizes 2 3⁄8" through 41⁄2". COMBINATION CEMENTING PLUGS Top and bottom cementing plugs are manufactured for use in combination casing strings where two or more different casing or tubing strings must be wiped by the cementing plugs during the displacement of fluids. Plugs for sizes from 2 3⁄8" through 13 3⁄8" available. Illustrations of some of the styles of plugs are shown .

TOP FLEXIBLE COMBINATION PLUG MODEL: WC-PCC-1 PRODUCT No.: WC-30802

TOP PLUG MODEL: WC-PCC-2 PRODUCT No. : WC-30803

COMBINATION TOP PLUG MODEL: WC-PCC-3 PRODUCT No. : WC-30804

 

 

Drilling & Down-hole Completion Tools Sub-sea cementing plug system has been designed for use where the casing is being installed utilizing a sub-sea wellhead tie-back system. Additional applications for this system include use with liners or where sectional cementing of the casing is being performed. Operation of the sub-sea cementing plug system is achieved by installing the top and bottom plugs on Running Tool that is attached to the bottom of the drill pipe string using common running tools or the Wellcare Running Tool that incorporates a swivel allowing the drill pipe to be rotated above the tool while allowing the plugs to remain stationary inside the casing. Bottom Plug is released by dropping Launch Ball into the drill pipe and circulating into the bottom plug where circulation pressure causes the bottom plug to be released. To release Top Plug the Launching Dart is released on top of the cement and pumped down through the drill string until it engages and releases the top plug from the running tool. Wellcare offers three types of stage cementing collars. Stage Collar is a mechanical stage collar that relies on gravity and an opening bomb or opening plug to open the cementing ports in the collar. Stage Collar and 242 Packer Cementing Collar are hydraulic stage collars that use internal casing pressure to open cementing ports. The use of Wellcare Stage Collars will allow for reduced contamination of cement where a long column of cement is being placed; reducing the breakdown of weak formations due to a long column of cement; allow for effective cement placement around lost circulation zones; and, to selectively place cement over certain casing intervals. Plug systems for different applications are available to allow the stage collars to be used in a wide range of applications where stage cementing is required. All stage collars are designed with built in locks that lock sleeves in the required positions during running, cementing and after completion of the cementing operation. All materials within drift diameters are made from easily drillable material allowing for quick and easy drill out of the plugs and seats. Stage collars are available in different casing grades, casing weights and thread connections.

MECHANICAL STAGE CEMENTING COLLAR AND PLUG SYSTEMS

Stage Collar is a proven design that is manufactured in sizes 4 1⁄2" / 114.3mm through 20" / 508mm. Design of the tool incorporates two internal sleeves that are shifted down to open and close the cementing ports. The opening and closing seats that catch the plugs feature a wide seating area to ensure excellent seating with the opening bomb and closing plug. Seats are short in length reducing drill out time. Double locking mechanisms are used on the closing sleeve that locks the sleeve in position both during the closing movement and after it has been fully closed. The closing procedure incorporates a system for allowing trapped fluid between the sleeves to be dissipated and permits the closing sleeve to fully lock in the down position.

TWO STAGE THREE PLUG CEMENTING

The standard two stage cementing procedure uses conventional floating equipment, either standard valve or filling float valves on the bottom of the casing string. The rubber baffle plate is installed on top of the float collar. The stage collar is installed in the casing string at the position where second stage cement is to be pumped into the annulus. If a casing packer is being used the stage collar will be located above the packer. The operation of the stage collar is illustrated in sequence.

1. Running In and First Stage Cementing, Flexible First Stage Plug will pass through stage collar while displacing first stage cement, landing on Baffle Plate located in Float Collar.

2. Second Stage Cement Opening Trip Bomb has landed in and opened Stage Cementing Collar allowing second stage cement to be displaced.

3. Second Stage Cement complete, Second Stage Closing / Displacement Plug landed in Stage Collar. Application of pressure will close the Stage Collar Ports. Two Stage Cementing job is complete.

 

 

Drilling & Down-hole Completion Tools TWO STAGE FOUR PLUG CEMENTING The two stage four plug cementing procedure is used where a lead plug is required to be run prior to first stage cement. Where there is no requirement for applying pressure to the casing after first stage cement displacement, a Type Flexible By-pass Plug is run in front of first stage cement. First stage cement is then run as usual with the Flexible First Stage Plug pumped on top of the cement. Upon completion of displacement no pressure indication will be obtained. Second stage cementing is performed in the manner described under Two Stage Three Plug Cementing. Where it is required to obtain a pressure indication upon displacement of first stage cement as may be the case when a casing packer is being run a Landing Collar should be run above the float collar. The landing collar will allow Type Flexible By-Pass plug to be pumped through the landing collar to the float collar. On Landing the plug in the float collar the cement is Displaced, by-passing the flexible plug. Flexible Shut-Off Plug is used instead of Plug to displace first stage cement. This plug will land in the landing collar allowing for an indication that the plug has been displaced. Pressure inside the casing can now be increased to inflate a casing packer and test the casing.

LANDING COLLAR MODEL : WC-LDC PRODUCT No.WC-31501

STAGE COLLAR TRIP PLUG Model : WC-ZSTP PRODUCT No - WC-30904

FLEXIBLE BY-PASS PLUG Model :WC-ZWFP PRODUCT No. - WC-30902

FLEXIBLE FOLLOW PLUG MODEL :WC-DFFP PRODUCT No. -WC-30903

STAGE COLLAR CLOSING PLUG MODEL : WC-ZSCP PRODUCT No.-(WC-30901

 

 

Drilling & Down-hole Completion Tools CONTINUOUS TWO STAGE CEMENTING Continuous two stage cementing is employed where there is a requirement to begin circulation of the second stage immediately after first stage cement has been displaced or where inclination of the stage collar is such that the standard opening bomb will not properly gravitate to the opening seat in the stage collar. The latter situation is often encountered in horizontal and highly deviated wells for two stage cementing. The procedure for performing continuous stage cementing requires a Flexible By-Pass Plug used in front of the First stage cement. First stage cement is then pumped into the casing followed by Flexible First Stage Plug. Displacement fluid required filling the casing between the float collar and the stage collar is then pumped, Continuous Opening Plug is released and displacement is continued. Plugs are then displaced with opening plug arriving at the stage collar just before 2 Opening Plug lands in the float collar. Application of pressure will open the stage collar and circulation of the second stage can be performed. Pumping of second stage cement and closing of the stage collar is accomplished using Closing Plug.

STAGE COLLAR CLOSING NIPPLE MODEL : WC-ZSCP

STAGE COLLAR TRIP PLUG MODEL : WC-ZSTP

FLEXIBLE INDICATING SEAL-OFF PLUGMODEL :WC-ZWFP

 

 

Drilling & Down-hole Completion Tools

THREE STAGE CEMENTING COLLAR MODEL: WC-SCZW3 PRODUCT No.: WC-30212 Three Stage Cementing collar is used to place a long column of cement about a weak zone. The “WC-SCZW3” Stage Collar is located a short distance about the weak zone. The First Stage is cemented by Three stage cementing can be performed using Stage Collars. The installation of Reduction valve seats in the lower stage collar and a set of Three Stage Cementing Plugs permits three stage cementing to be performed. The Plug set comes pumping cement up to the “WC-SCZW3” Collar. The “WC-SCZW3” Collar is then opened using the Trip Plug and then the Second and Third Stages are cemented. with a special first stage plug, opening bomb and closing plug that are designed to be pumped through the upper stage collar and work effectively in operating the lower stage cementing collar. Plug set is also supplied with reduction valve seats required to convert a standard Stage Collar for use with the plugs TAPERED AND OFFSET TAPERED NOSES MODEL- WC-NST, PRODUCT No.- WC-31201 MODEL- WC-NSOT , PRODUCT No. WC-31202 Tapered and offset tapered noses help casing pass severe ledges, obstructions, high angles, and previous sidetracks. These noses also help protect the float valves from being damaged from debris while running in the hole.

Features/Benefits: • Enables a one trip to bottom target depth casing run • With the high-port up-jet (HPUJ) or down-jet nose, cement

bonding can be improved to jet wellbore clean, and to aid in circulating past tight spots.

• Available on all Super Seal II® equipment • Available in aluminum (non-PDC drillable) and composite material

(PDC drillable • Available in standard design, HPUJ, and down-jet configurations • “Enclosed” down-jet option is available with molded plastic nose,

which passes 60% of flow through the nose and 40% through the down-jet ports.

Tapered Offset Nose for Better Travel in Deviated hole Section

Tapered Offset Nose

 

 

Drilling & Down-hole Completion Tools

BAFFLE COLLAR MODEL- WC-BCR, PRODUCT No.- WC-31401 Baffle Collar is an effective method for landing cementing plugs at specific points in the casing string. Useful in situations such as liner cementing and where no float collar or float shoe is being run. Cement filled collar that is easily drillable

BAFFLE PLATE MODEL- WC-BPE, PRODUCT No. - WC-31001 Baffle Plate is used for landing cementing plugs and is designed to be installed in the centre of a casing coupling. These units are available in both aluminium and plastic materials, and come in threaded and flush outside diameter configurations. Baffle Plates are available in sizes 4 1⁄2" / 114.3mm through 13 3⁄8" / 339.7mm.

THREAD LOCK COMPOUND PRODUCT No. - WC-31402 Thread Lock Compound is a thread compound formulated for locking of casing threads. This compound is used for locking float equipment and casing joints on the bottom of the casing to prevent unscrewing of the threads during drill-out operations. The two part compound provides superior strength and works in adverse temperature conditions.

API MODIFIED PIPE COMPOUND PRODUCT No.- WC-31403 API modified pipe compound is a thread lubricant, protecting and sealant that is manufactured according to the specifications of API Bulletin 5A2. The compound contains rust and oxidation inhibitors and is formulated to ensure brush ability over a wide temperature range. The pipe compound will seal and withstand pressures up to 10,000 PSI / 69 Mpa and will not harden and dry. Available in 9 and 15 kilogram pails.