Pressure test and bypass valve with rupture disc

Details Pressure test and bypass valve with rupture disc Pressure test and bypass valve with rupture disc

E - Fixed Constructions

21

B

E21B 47/00 (2006.01) E21B 34/00 (2006.01) E21B 34/10 (2006.01) G01L 7/00 (2006.01)

Patent

CA 2113402

A pressure test and bypass valve for use in well testing. The apparatus comprises a housing defining a central opening therein and a mandrel slidably disposed in the central opening. A ball valve allows fluid flow through the central opening when in an open position and prevents fluid flow therethrough when in a closed position. A sleeve valve allows communication between the central opening and a well annulus when in an open position and prevents communication between the central opening and the well annulus when in a closed position. The ball valve and sleeve valve are actuated substantially simultaneously in response to well annulus pressure. A rupture disc is ruptured due to differential pressure thereacross. This allows well annulus pressure to act across a differential area on the mandrel such that the mandrel is moved relative to the housing, thereby actuating the valves.

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