Measuring and testing – With fluid pressure – Leakage
Patent
1989-01-13
1991-03-12
Williams, Hezron E.
Measuring and testing
With fluid pressure
Leakage
73 46, 73 491, G01M 320
Patent
active
049984357
ABSTRACT:
A method of testing pipe sections at an oil rig floor by means of an internal pipe testing tool and a pressurized gas containing helium in a ratio of helium to a carrier gas of at least about 1:2856 by volume. The gas is pressurized in a hydraulic accumulator remote from the rig floor. The pressurized gas actuates the test tool at substantially the same pressure as is used for testing the pipe section. A flexible enclosure confines the test gas which leaks from the pipe section. The enclosure define a substantially annular chamber around the area to be tested to confine leakage test gas to prevent its dissipation into the atmosphere. An aperture is provided in the enclosure to permit a sensing probe to be inserted into the annular chamber between the enclosure and the pipe section to sense the presence of test gas.
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Dwyer Arthur L.
Miller Darwin A.
Miller Darwin L.
Miller Ronnie F.
Damco Testers, Inc.
Williams Hezron E.
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