shock tool _ downhole drilling tools
DESCRIPTION
Shock ToolTRANSCRIPT
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3/8/2015 ShockTool|DownholeDrillingTools
http://challengerdownhole.com/downholetoolproducts/shocktool/ 1/4
Calgary 403.235.2364Edmonton 780.435.5455
Description:The Challenger Downhole Tools Shock Tool effectively reduces impact loading on the bit to extend bit life andreduce bit trips. By isolating axial bit vibrations from the drill string, the shock tool will reduce lateral and torsionaldrill string vibrations, and related fatigue damage or failure of the rotary connections.
The shock tool allows optimum bit speed to be used under rough drilling conditions, increasing the rate ofpenetration. The Challenger shock spring rate can be adjusted for additional applications such as, P.D.C. bits andused with vibration tools and MWD.
The Challenger PDC Shock Tool
This design of our Shock Tool is built with PDC bits in mind. The PDC style bit requires far less weight while drilling,the Challenger PDC style Shock is built to operate and perform better with these lower WOB.
The typical shock is used and designed to operate with Roller Cone style bits that require significantly higher WOBthan a PDC, we designed a shock to run with a PDC application which allows the shock to operate better at the lowerWOB utilizing its entire stroke more effectively.
When ordering shocks WOB and application information should be considered to assure maximum performancefrom the Shock Tool.
Challenger Shock Tool (Belleville Spring Design)
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3/8/2015 ShockTool|DownholeDrillingTools
http://challengerdownhole.com/downholetoolproducts/shocktool/ 2/4
Reduces drill string vibration and impact from MWD
systems
Adjustable spring rate for P.D.C. applications
Can be provided in both near bit and string
applications
Does not use temperature-sensitive elastomers for
shock absorption, therefore is suitable for use in
temperatures to 275F (135C), with optional seals
available for temperatures up to 450F (230C)
Reliable Belleville disc springs provide optimum
load/deflection characteristics to maintain consistent
contact between bit and formation, effectively
reducing impact loading to extend bit life
Low friction torsional drive permits free vertical
movement
Reduces wear and tear on rig and equipment, and
fatigue failures on drill collars and drill pipe
Automatically compensates for pump open force
Isolates bit induced vibrations from the drill string
Pressure balanced to eliminate the effect of downhole
hydrostatic pressure
If ran with MWD tool, position shock as close to MWD
equipment as possible
With a packed bottom hole assembly, the shock tool
may be located a minimum of two drill collar lengths
above the top stabilizer, however bit protection will
be reduced due to the greater un- sprung mass below
the tool.
For maximum effectiveness, the shock tool should be
positioned immediately above the bit.
Automatic compensation of pump open effect makes
the shock tool effective with any combination of bit
weight or circulating pressure.
Benefits & Features
Operation
Imperial
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3/8/2015 ShockTool|DownholeDrillingTools
http://challengerdownhole.com/downholetoolproducts/shocktool/ 3/4
Nominal OD(inch
Length (ft) InsideDiam
Approx. Weight(lbs)
Pump Open Area(in2)
Torsional Limit (ft lbs) Tensile Yeild (lbs)
3.50 7.8 1.00 230 5.9 10,000 239,000
4.75 10.7 1.50 540 11.0 20,000 561,500
6.25 11.7 2.25 1000 19.6 37,900 926,600
6.50 11.6 2.25 1030 19.6 39,500 960,000
6.75 11.5 2.75 1100 21.6 46,400 837,400
8.00 11.9 2.75 1690 30.6 104,600 1,378,800
9.00 12.3 3.00 2220 38.5 125,000 1,502,000
11.00 12.0 3.00 3240 63.6 225,600 1,628,300
12.00 12.0 3.00 3900 63.3 345,400 1,628,300
Metric
Nominal OD(inch
Length (m) InsideDiam
Approx. Weight(kg)
Pump Open Area(mm2)
Torsional Limit (N-m) Tensile Yeild (daN
89 2.4 25 100 3 800 14 000 106,300
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3/8/2015 ShockTool|DownholeDrillingTools
http://challengerdownhole.com/downholetoolproducts/shocktool/ 4/4
121 3.3 38 250 7 000 28 000 249 800
159 3.6 57 450 12 700 53 000 412 200
165 3.5 57 470 12 700 55 000 427 000
171 3.5 70 500 13 900 64 000 372 500
203 3.6 70 770 19 700 145 000 613 300
229 3.7 76 1010 24 800 174 000 668 100
279 3.7 76 1470 41 000 313 000 724 300
305 3.7 76 1770 41 000 480 000 724 300
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