Shutoff Valve
AssigneePetroQuip Energy Services, LLC
InventorsRobert Coon, Roddie Smith, John Lee Emerson, Antonio B. Flores
Life of this patent
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Abstract
A shutoff valve device for permitting and preventing fluid flow in a production string. In one embodiments, the shutoff valve device comprising: a body comprising a borehole, wherein the body is a top sub coupled to a bottom sub via a threaded fastener; a flow tube disposed within the body's borehole and capable of axial movement within the body's borehole, comprising a flow tube borehole; a bi-directional actuator attached to a bottom opening of the flow tube, comprising flexible flaps; and a flapper valve disposed within the body's borehole, wherein the flapper valve is hingedly coupled to a top surface of the bottom sub and capable of moving between a fully opened and fully closed position.
Claims20
A shutoff valve device for permitting and preventing fluid flow in a production string, comprising:
- a body comprising a borehole, wherein the body is a top sub coupled to a bottom sub via a threaded fastener;
- a flow tube disposed within the body's borehole and capable of axial movement within the body's borehole, comprising a flow tube borehole;
- a bi-directional actuator attached to a bottom opening of the flow tube, comprising flexible flaps;
- and
- a flapper valve disposed within the body's borehole, wherein the flapper valve is hingedly coupled to a top surface of the bottom sub and capable of moving between a fully opened and fully closed position.
A shutoff valve device for permitting and preventing fluid flow in a production string, comprising:
- a body comprising a borehole, wherein the body is a top sub coupled to a bottom sub via a threaded fastener;
- a flow tube disposed within the body's borehole and capable of axial movement within the body's borehole, comprising a flow tube borehole;
- a compression spring disposed radially between the flow tube and the body, wherein the compression spring biases the flow tube in an axially upward position;
- a bi-directional actuator attached to a bottom opening of the flow tube, comprising flexible flaps;
- and
- a flapper valve disposed within the body's borehole, wherein the flapper valve is hingedly coupled to a top surface of the bottom sub and capable of moving between a fully opened and fully closed position.
A method for permitting and preventing fluid flow in a production string, comprising:
- (A) outfitting a production string with a shutoff valve device comprising:
- a body comprising a borehole, wherein the body is a top sub coupled to a bottom sub via a threaded fastener;
- a flow tube disposed within the body's borehole and capable of axial movement within the body's borehole, comprising a flow tube borehole;
- a bi-directional actuator attached to a bottom opening of the flow tube, comprising flexible flaps;
- and
- a flapper valve disposed within the body's borehole, wherein the flapper valve is hingedly coupled to a top surface of the bottom sub and capable of moving between a fully opened and fully closed position.
Dependencies are inferred from the claim text.