Sealing device
AssigneeSchlumberger Technology Corporation
InventorsDavid Merlau, Gareth Yen Ket Chin, Brian John Bethscheider, Marius Smarandache
Life of this patent
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Abstract
A sealing device for sealing an interface between a first surface and a second surface includes a primary sealing element for forming a primary seal at the interface and a carrier body that is slidable with respect to the interface to engage the primary sealing element. A carrier sealing element is positioned on the carrier body, and is configured to seal the interface with a secondary seal. The carrier body is slidable to engage the primary sealing element based on the secondary seal sealing the interface.
Claims19
A sealing device for sealing an interface between a first surface and a second surface, including:
- a primary sealing element for forming a primary seal at the interface;
- a carrier body that is slidable with respect to the interface to engage the primary sealing element;
- and
- an inner carrier sealing element and an outer carrier sealing element that are configured to seal the interface with a secondary seal, wherein the inner carrier sealing element is positioned at an inner surface of the carrier body and the outer carrier sealing element is positioned at an outer surface of the carrier body opposite the inner surface, and wherein the carrier body is slidable to engage the primary sealing element based on the secondary seal sealing the interface.
A downhole valve, comprising:
- an outer cylindrical body;
- an inner cylindrical body positioned within the outer cylindrical body with an interface therebetween;
- and
- a sealing device for sealing the interface, including:
- a V-ring seal stack;
- a carrier ring that is slidable with respect to the interface to engage the V-ring seal stack and to activate the V-ring seal stack against the interface and form a primary seal;
- and
- an inner carrier sealing element and an outer carrier sealing element disposed on the carrier ring that are configured to seal the interface with a secondary seal, wherein the inner carrier sealing element is disposed at an inner diameter of the carrier ring and the outer carrier sealing element is disposed at an outer diameter of the carrier ring, and wherein the carrier ring is slidable based on the secondary seal sealing the interface;
- wherein the inner cylindrical body is slidable with respect to the outer cylindrical body to expose the carrier ring to a flow port for flowing a downhole fluid through the flow port.
Dependencies are inferred from the claim text.