Riser annular isolation device
AssigneeWeatherford Technology Holdings, LLC
InventorsJoe NOSKE, Christopher L. MCDOWELL
Life of this patent
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Abstract
In one embodiment, an annular isolation device for a riser includes a tubular body connectable to the riser. A closure member is rotatable between a closed position isolating fluid communication in the tubular body and an open position permitting fluid communication through the tubular body. The annular isolation device further includes an actuator disposed outside the tubular body and operable to rotate the closure member between the open position and the closed position.
Claims20
An annular isolation device for a riser, comprising:
- a tubular body connectable to the riser;
- a closure member rotatable between an open position permitting fluid communication through the tubular body and a closed position isolating fluid communication;
- and
- an actuator disposed outside of the tubular body and operable to rotate the closure member between the open position and the closed position.
A method for controlling fluid flow in a riser, comprising:
- rotating a closure member between a closed position isolating fluid communication through a tubular body and an open position permitting fluid communication through the tubular body using an actuator disposed outside of the tubular body.
An annular isolation device for a riser, comprising:
- a tubular body connectable to the riser;
- a first sleeve member disposed in the tubular body;
- a second sleeve member disposed in the first sleeve member, wherein the first sleeve member is axially movable relative to the second sleeve member;
- and
- a closure member movable with the first sleeve member and movable between an open position permitting fluid communication through the tubular body and a closed position isolating fluid communication.
Dependencies are inferred from the claim text.