发明名称 |
Device for positioning and stabbing casing from a remote selectively variable location |
摘要 |
A casing stabbing apparatus which includes a derrick bracket subassembly for attachment to a derrick, and a boom having an end pivotally connected to the bracket assembly for pivotation about a vertical axis and about a horizontal axis. A pair of arcuate casing gripping jaws is pivotally connected to the second end of the boom. A piston and cylinder assembly extends between the jaws to selectively converge and diverge the jaws. A second piston and cylinder assembly extends between the bracket assembly and the boom to elevate the boom by pivotation about a horizontal pivotal axis. A third piston and cylinder assembly extends between the bracket assembly and the boom to swing the boom laterally in pivotation about a vertical axis. A remote automatic control subassembly enables the casing stabbing operation to be carried out from a remote location by the use of a hand held wand.
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申请公布号 |
US4921386(A) |
申请公布日期 |
1990.05.01 |
申请号 |
US19880203252 |
申请日期 |
1988.06.06 |
申请人 |
HARREL, JOHN;HARREL, CHARLENA |
发明人 |
MCARTHUR, JAMES R. |
分类号 |
E21B19/14;E21B19/16 |
主分类号 |
E21B19/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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