G - Physics – 01 – M
Patent
G - Physics
01
M
166/52
G01M 3/28 (2006.01) E21B 33/04 (2006.01) E21B 33/06 (2006.01) E21B 47/10 (2006.01) G01M 3/26 (2006.01)
Patent
CA 1092968
HYDRAULIC TEST TOOL AND METHOD ABSTRACT A test tool and a method of testing is disclosed for testing for leaks in apparatus having a bore and a landing surface, such as blowout preventers, wellheads, casing hangars, and the like. The test tool is connected to pipe having a passage there- through, which has a landing surface for landing on the landing surface of the bore, bypass passages automatically closed on landing and during testing, packing means for effecting a seal in the bore, a pressure relief valve and hydraulic passages com- municating with the passage in the pipe, the packing means, and the relief valve which opens at a predetermined pressure. The packing is set either hydraulically, mechanically or by a comb- ination thereof. The packing is set hydraulically by a piston and cylinder which are activated by hydraulic setting pressure in the passages and then hydraulic test pressure is released by the relief valve to the space above the packing for testing the apparatus. When the test tool is set mechanically, the packing is compressed by the weight of the test tool and the pipe into sealing position by downward movement of a portion of the body after landing, the hydraulic testing pressure then assisting and maintaining the seal.
317346
Lamb Raymond K.
Walker Stephen J.
Borden Ladner Gervais Llp
Rucker Company (the)
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