发明名称 |
COMPENSATING BAILS |
摘要 |
A pipe handler for assembling and deploying a string of threaded tubulars into a wellbore includes a pair of compensating bails and an elevator pivotally connected to the compensating bails. Each compensating bail includes: a first bail segment; a second bail segment; and a compensator connecting the respective first and second bail segments. Each compensator includes a load cylinder connected to the respective first bail segment and a linear actuator disposed in the respective load cylinder and operable to retract the respective second bail segment from a hoisting position to a ready position. Each second bail segment is engaged with the respective load cylinder in the hoisting position. The compensating bails are capable of supporting string weight in the hoisting position. |
申请公布号 |
US2017016285(A1) |
申请公布日期 |
2017.01.19 |
申请号 |
US201615277290 |
申请日期 |
2016.09.27 |
申请人 |
Weatherford Technology Holdings, LLC |
发明人 |
PRATT Brittan S.;HEIDECKE Karsten |
分类号 |
E21B19/06;E21B19/16 |
主分类号 |
E21B19/06 |
代理机构 |
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代理人 |
|
主权项 |
1. A pipe handler for assembling and deploying a string of threaded tubulars into a wellbore, comprising:
at least one compensating bail comprising: a first bail segment; a second bail segment; and a compensator connecting the first and second bail segments; wherein:
the compensator comprises:
a load cylinder connected to the first bail segment; anda piston and cylinder assembly disposed in the load cylinder and operable to retract the second bail segment from a hoisting position to a ready position,the second bail segment is engaged with the load cylinder in the hoisting position. |
地址 |
Houston TX US |