Back pressure valve
AssigneeCameron International Corporation
InventorsDennis P. Nguyen, Kirk P. Guidry, Thomas E. Taylor
Life of this patent
Estimating the term…
Abstract
A system includes a back pressure valve configured to mount in a mineral extraction system. The back pressure valve comprises a cylindrical body comprising a venting port coaxial with a longitudinal axis of the cylindrical body and a plunger disposed in the venting port, wherein the plunger comprises a stem that extends from the venting port into an adjacent cavity of the cylindrical body. A method of operating a valve, includes biasing a plunger to an open position, biasing a valve locking mechanism to a locked position in relation to a bore of a mineral extraction system, and biasing a plunger to a closed position.
Claims24
A system, comprising:
- a back pressure valve configured to mount in a mineral extraction system, wherein the back pressure valve comprises:
- a cylindrical body comprising a venting port coaxial with a longitudinal axis of the cylindrical body;
- a plunger disposed in the venting port, wherein the plunger comprises a stem that extends from the venting port into an adjacent cavity of the cylindrical body;
- a hold down sleeve and one or more locking segments disposed in the cavity, wherein the hold down sleeve and the one or more locking segments comprise an angled interface, such that an axial load applied to the hold down sleeve in a first direction via a running tool generates a radial load that urges the one or more locking segments into a locked position that seats, locks and seals the back pressure valve in a bore of the mineral extraction system;
- and
- a shear pin mounted to the cylindrical body, wherein the shear pin is configured to couple the back pressure valve to the running tool, wherein an application of the axial load in the first direction is configured to shear the shear pin to uncouple the back pressure valve from the running tool.
A method of operating a back pressure valve, comprising:
- biasing a plunger of a back pressure valve into an unlocked and opened position;
- urging the back pressure valve into a bore in the unlocked and opened position;
- applying an axial load in a first direction via a running tool to run and lock the back pressure valve into the bore, wherein applying the axial load in the first direction is configured to cause one or more locking segments of the back pressure valve to expand in a radial direction;
- and
- biasing the plunger of the back pressure valve into a closed position.
A system, comprising:
- a back pressure valve running tool configured to transmit a first axial force in a single direction to a back pressure valve to position the back pressure valve in a bore of a mineral extraction system and transmit a second axial force in the single direction to bias a plunger of the back pressure valve toward an opened position while positioning the back pressure valve in the bore.
A system, comprising:
- a back pressure valve running tool configured to transmit a first axial force in a single direction to a back pressure valve to position the back pressure valve in a bore of a mineral extraction system and transmit a second axial force in the single direction to bias a plunger of the back pressure valve toward an opened position while positioning the back pressure valve in the bore, wherein the back pressure valve running tool is configured to apply an axial force in a direction to enable a spring loaded pin to extend radially into a complementary receptacle, wherein the spring loaded pin is configured to retain the back pressure valve in a locked position.
Dependencies are inferred from the claim text.