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The test valve, pipe column of test of poco, process of test by pressure, a column of tube and process of testing a formation of a poco
The test valve, pipe column of test of poco, process of test by pressure, a column of tube and process of testing a formation of a poco
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机译:测试阀,poco测试的管柱,压力测试过程,管柱和测试poco形成的过程
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摘要
A drill pipe tester valve includes a spherical valve member supported from an upward facing surface of a housing so that downward forces exerted on the valve member in its closed position, due to fluid pressure in a string of pipe above the valve member, are transmitted substantially entirely to said housing.
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