The SOKOL Drilling motors and tools Hydraulic Double Acting Jar is hydraulically controlled and works in both directions, with impact force controlled by the operator. The jar does not incorporate a mechanical section. Up jarring force is controlled by the amount of the drill string tension during the hydraulic delay, and down jarring force — by the slack of weight during the hydraulic delay.
The SOKOL Hydraulic Double Acting Jar is operated by a simple up and down motion and is unaffected by right- or left-hand torque. Standard seals are suitable for use up to 120°C. Optional high temperature seal kits are available suitable for service up to 200°C. External sealing surfaces are tungsten carbide-coated to enhance wear and corrosion resistance.
|Nominal OD (inch)||Length (ft)||Thru Bore (inch)||Tensile Yield (lbs)||Torsional Limit (ft-lbs)||Max Pull During Delay (lbs)||Free Stroke Up / Down (inch)||Total Stroke (inch)|
|4.75||22.0||2.25||482 000||21 500||132 000||8.0||25.0|
|6.50||23.1||2.75||1 220 000||51 000||275 000||8.0||25.0|
|6.75||22.7||2.75||1 237 000||63 300||290 000||8.0||25.0|
|7.00||22.7||2.75||1 237 000||67 800||290 000||8.0||25.0|
|8.00||23.2||2.81||1 472 000||103 200||400 000||8.0||25.0|
|9.50||24.1||3.00||2 550 000||200 000||550 000||8.0||25.0|