High pressure conversion for circulating/safety valve

Details High pressure conversion for circulating/safety valve High pressure conversion for circulating/safety valve

E - Fixed Constructions

21

B

E21B 47/06 (2006.01) E21B 34/10 (2006.01) E21B 49/00 (2006.01) E21B 34/00 (2006.01)

Patent

CA 2148168

A well testing tool for use in high pressure wells where it is desired to pressure test the equipment includes a mandrel that is ported to the interior of the test string. The ported mandrel allows pressure to equalize between the interior of the string and an annular chamber formed between the mandrel and the tool housing, and thereby eliminates the tendency of the mandrel to deform into the chamber.

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