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US 12,287,039 B2Granted
Valve with pressure differential seating
AssigneeOil States Energy Services, L.L.C.
InventorsBob McGuire, Danny Artherholt, Mickey Claxton, Blake Mullins
Life of this patent
Estimating the term…
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.
Claims25
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 generally annular recess formed in the valve body;
- a seat disposed within said recess adjacent to the interior bore and comprising:
- a first radial surface configured to sealingly engage the flow barrier and comprising
- a first surface area exposed to pressurized fluid disposed within the interior bore;
- a second radial surface distal from the flow barrier and comprising a second surface area exposed to pressurized fluid disposed within the interior bore, wherein the second surface area is larger than the first surface area;
- a first axial surface disposed at a first distance from the central longitudinal axis;
- a second axial surface adjacent to the first radial surface and disposed at a second distance from the central longitudinal axis, wherein the second distance is greater than the first distance;
- and
- a third radial surface disposed at an axial location between the first radial surface and the second radial surface and extending radially outward from the second axial surface;
- and
- a plurality of seals configured to isolate the third radial surface of the seat from being exposed to any pressurized fluid disposed within the interior bore.
10 more elements
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 generally annular recess formed in the valve body;
- a seat disposed within said recess adjacent to the interior bore and comprising:
- a first radial surface configured to sealingly engage the flow barrier and comprising
- a first surface area exposed to pressurized fluid disposed within the interior bore;
- a second radial surface distal from the flow barrier and comprising a second surface area exposed to pressurized fluid disposed within the interior bore, wherein the second surface area is larger than the first surface area;
- a first axial surface disposed at a first distance from the central longitudinal axis;
- a second axial surface adjacent to the first radial surface and disposed at a second distance from the central longitudinal axis, wherein the second distance is greater than the first distance;
- and
- a third radial surface disposed at an axial location between the first radial surface and the second radial surface and extending radially outward from the second axial surface;
- and
- a first seal configured to isolate the third radial surface of the seat from pressurized fluid disposed within the interior bore and passing between the first radial surface of the seat and the flow barrier.
10 more elements
Dependencies are inferred from the claim text.