Wellhead and control stack pressure test plug tool

Details Wellhead and control stack pressure test plug tool Wellhead and control stack pressure test plug tool

2008-04-30

2009-10-20

Thompson, Kenneth (Department: 3672)

Wells

Processes

With indicating, testing, measuring or locating

C166S075130, C073S046000

Reexamination Certificate

active

07604050

ABSTRACT:
A test plug tool for use in testing a pressure integrity of a pressure control stack mounted to a wellhead, including a joint between a casing and a casing support in the wellhead. The test plug tool includes a test plug of an appropriate diameter used to pressure test the pressure control stack as well as a joint between any one of a surface casing and the wellhead, an intermediate casing and an intermediate casing mandrel, and a production casing and a production casing mandrel. The pressure integrity of the wellhead is ensured at each stage of well drilling and well completion, and safety is improved. Optionally, a backpressure valve permits pressurized fluid that leaks below the test plug tool to flow upwardly through a central bore in a landing tool that is secured to the test plug tool to permit detection of the leak.

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