E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/068 (2006.01) E21B 19/00 (2006.01)
Patent
CA 2452457
An apparatus for controlling vertical movement of a tubular within a wellhead includes an anchor spool connected atop the wellhead, and a detachable superstructure supporting the tubular. The anchor spool provides connectors for detachably connecting bottom ends of at least two piston cylinders of the detachable superstructure. The tubular may be a landing joint or a high-pressure mandrel of either a well stimulation tool, or a well isolation tool. The apparatus provides unobstructed access to a top end of the tubular. The anchor spool includes an elongated sidewall and an axial passage through which a tubing hanger can be reciprocated. The height of the sidewall permits the apparatus to be used for landing/removing a tubing string even if the anchor spool is mounted directly to a blowout preventer (BOP).
Dallas L. Murray
Stinger Wellhead Protection Inc.
Wood Max R.
LandOfFree
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