Shock tools

The shock tool design guarantees efficient operation under various combinations of impact loads on the bit and pressure drops in a drilling fluid.
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Shock tools

The SOKOL Shock tool is engineered to dampen drill string vibrations caused by drilling. The shock tool design guarantees efficient operation under various combina­tions of impact loads on the bit and pressure drops in a drilling fluid.

Reliable belleville disk springs are used to reduce the vibration and ensure optimum tool rigidity and allow high impact loading to be applied to the shock tool.

Splined connection between the housing and the shaft effectively transmits torque during rotary drilling.

For maximum effectiveness, the shock tool should be placed above the mud motor during sliding and above the bit during rotary drilling.

Technical specification

Size 89mm
(3 ½")
121mm
(4 ¾")
165mm
(6 ½")
172mm
(6 ¾")
203mm
(8")
229mm
(9")
241mm
(9 ½")
254mm
(10")
286mm
(11 ¼")
Max OD, mm 89 124 166 176 207 233 246 258 290
Length, mm 2 700 3 200 3 600 3 600 4 200 4 100 4 500 4 500 4 600
Tensile yield
during normal tripping, kgf
45 000 110 000 200 000 195 000 290 000 320 000 250 000 250 000 240 000
Tensile yield
during emergency tripping, kgf
65 000 150 000 280 000 275 000 410 000 440 000 350 000 350 000 340 000
Min thru bore, mm 25 38 57 70 70 76 76 76 76
Torsional limit, kgf*m 600 1 400 3 300 3 900 6 200 7 600 10 000 10 100 16 000
Tool joint (may be customized) NC 26 NC 38 NC 50 NC 50 6 5/8 Reg 6 5/8 FH 6 5/8 FH 7 5/8 Reg 8 5/8 Reg

Features & Benefits

  • Reduces impact loading on the bit to extend bit life and enhance reliability of drilling tools
  • Suitable for use in temperatures to 120°C, with optional seals available for temperatures up to 160°C
  • Shorter well construction period
  • Reduces wear and tear on rig and equipment
  • Reduces fatigue failures on drill collars and drill pipe
  • Reduces torsional and lateral drill string vibrations
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