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US 11,028,929 B2Granted
Valve with pressure differential seating
AssigneeOil States Energy Services, L.L.C.
InventorsBob McGuire, Danny L. Artherholt, Mickey Claxton, Blake Mullins
Life of this patent
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Abstract
A valve for use in oil and gas production or similar applications includes a plug or other flow barrier disposed in a cavity of a hollow valve body with a metal-to-metal sealing surface that is not reliant on any rubberized or elastomeric material to effect a seal.
Claims17
A valve comprising:
- a valve body comprising a cavity and an interior bore with a central longitudinal axis;
- a flow barrier disposed within said cavity and operable to move between an open position in which the interior bore of the valve body is unobstructed and a closed position in which the flow barrier obstructs the interior bore;
- a seat comprising a first radial surface at a first axial location adjacent to said flow barrier, a second radial surface that is at a second axial location and larger than the first radial surface, and a third radial surface at a third axial location between the first axial location and the second axial location;
- a seat bushing comprising a first radial surface;
- said seat bushing and seat disposed such that the first radial surface of the seat bushing does not directly contact the seat, such that a chamber is formed between the third radial surface of the seat and the first radial surface of the seat bushing.
2 more elements
Dependencies are inferred from the claim text.