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

1993-01-14

1994-08-30

Schoeppel, Roger J.

Wells

Valves, closures or changeable restrictors

Fluid operated

166334, E21B 3410

Patent

active

053418832

ABSTRACT:
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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