Wells – Means anchored against rotation in one conduit section for...
Patent
1993-09-24
1995-04-11
Britts, Ramon S.
Wells
Means anchored against rotation in one conduit section for...
166237, 175322, E21B 2300
Patent
active
054049440
ABSTRACT:
A downhole tool for making up threaded connections between lower and upper tubulars within a well bore includes a lower anchoring member, an upper anchoring member, and a drive member including a movable piston assembly. A plurality of straight splines on the piston assembly and mating splines on a housing rotatable with the lower anchoring member allow axial movement while preventing rotational movement of the piston assembly with respect to the lower anchoring member during the tool driving stroke. The helical drive component on the piston assembly and a mating driven component rotatable with the upper anchoring member cooperate to rotate the upper anchoring member and thus the upper tubular to make up the downhole threaded connection. According to the method of the present invention, the upper and lower anchoring members are each secured to a respective tubular, and fluid pressure is increased to drive the piston assembly downward, thereby rotating the upper tubular. A torque sub may be provided including strain gauges for measuring makeup torque And for transmitting representative signals to the surface during the makeup operation.
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Brand Patrick R.
Lynde Gerald
Sukup Richard A.
Wright Ralph D.
Baker Hughes Inc.
Britts Ramon S.
Tsay Frank S.
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