Specifications
API 7-1 ZKX Type Drilling Bumper SubAPI Connection
Size 4 3/4", 7 3/4", 9"
release stuck accident
API 7-1 ZKX Type Drilling Bumper Sub
The drilling bumper sub type ZKX mainly makes the down jarring blow operation, releasing the stuck accident such as the sticking, land filling and keyway effectively and so on. Moreover, it can be also used for fishing operation, or it can be considered as "heave compensator" during offshore drilling.
Specification Series and Performance Parameters
Type | Tool O.D. mm(in) | Hole Diameter mm(in) | Connection API | Overall Stroke mm(in) | Max. Working Load kN(lbf) | Max. Working Torque kN.m(lbf·ft) | Max. Tensile Load kN(lbf) |
ZKX46 | 121(4 3/4) | 50(2) | NC38 | 508(20) | 350(79000) | 8(5900) | 900(202000) |
ZKX76 | 197(7 3/4) | 76(3) | 6 5/8REG | 1520(59 7/8) | 770(173000) | 15(11000) | 1800(404000) |
ZKX90 | 229(9) | 76(3) | 7 5/8REG | 1520(59 7/8) | 1300(292000) | 20(15000) | 2200(494000) |