Downhole Drilling Tools

Calgary 403.235.2364
Edmonton 780.435.5455
Oklahoma City 405.604.0096
Midland/Odessa 432.296.8455

  • Home
  • About Us
  • Products
    • Challenger Sidewinder / Sidewinder Ball Drop
    • Safety Joint
    • Hydraulic / Mechanical Drilling Jar
    • High Output Hydraulic / Mechanical Drilling Jar – (HO-HMJ)
    • Drilling Motors
    • Shock Tool
    • Bumper Jar
    • Adjustable Bent Housing
    • Power Section Spec Sheets
    • Reamers & Stabilization
  • Contact

Challenger Shock Tool (Belleville Spring Design)

Home  ›  Products  ›  Shock Tool

Description:

The Challenger Downhole Tools Shock Tool effectively reduces impact loading on the bit to extend bit life and reduce bit trips. By isolating axial bit vibrations from the drill string, the shock tool will reduce lateral and torsional drill 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 of penetration. The Challenger shock spring rate can be adjusted for additional applications such as, P.D.C. bits and used 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 WOB than a PDC, we designed a shock to run with a PDC application which allows the shock to operate better at the lower WOB utilizing its entire stroke more effectively.

When ordering shocks WOB and application information should be considered to assure maximum performance from the Shock Tool.

Benefits & Features

  • 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 275°F (135°C), with optional seals available for temperatures up to 450°F (230°C)
  • 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

Operation

  • 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.

Imperial

Nominal OD (inch)
Length (ft)
Inside Diam
Approx. Weight (lbs)
Pump Open Area (in2)
Torsional Limit (ft lbs)
Tensile Yield (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)
Inside Diam
Approx. Weight (kg)
Pump Open Area (mm2)
Torsional Limit (N-m)
Tensile Yield (daN
89 2.4 25 100 3 800 14 000 106,300
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

© Copyright 2011 - . All Rights Reserved. Challenger Downhole Tools.
Website By: Impact Graphics