Plugging of a flow passage in a subterranean well
AssigneeHalliburton Energy Services, Inc.
InventorsZachary R. Murphree, Michael L. Fripp, Zachary F. Walton
Life of this patent
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Abstract
A method of plugging a flow passage in a well can include conveying a plug into an isolation tool in the well, and then contracting a plug seat of the isolation tool. An isolation tool for plugging a flow passage in a subterranean well can include a piston, and a longitudinally displaceable plug seat. The plug seat longitudinally displaces in response to displacement of the piston. Another method of plugging a flow passage can include conveying a plug into an isolation tool in the well, and then longitudinally displacing a plug seat of the isolation tool, thereby radially contracting the plug seat.
Claims16
A method of plugging a flow passage in a subterranean well, the method comprising:
- conveying a plug into an isolation tool in the well, wherein the conveying comprises lowering the plug while the plug is attached to a conveyance;
- displacing a piston in response to displacing a closure of the isolation tool to an open position;
- and
- contracting a plug seat of the isolation tool about the plug in response to the displacing of the piston.
An isolation tool for plugging a flow passage in a subterranean well, the isolation tool comprising:
- a piston;
- a closure, wherein the piston displaces in response to displacement of the closure to an open position;
- and
- a longitudinally displaceable plug seat, wherein the plug seat longitudinally displaces and radially contracts at longitudinally spaced apart locations in response to displacement of the piston.
A method of plugging a flow passage in a subterranean well, the method comprising:
- conveying a plug into an isolation tool in the well, wherein the conveying comprises lowering the plug while the plug is attached to a conveyance;
- displacing a piston in response to displacing a closure of the isolation tool to an open position;
- and
- longitudinally displacing a plug seat of the isolation tool in response to the displacing of the piston, thereby radially contracting the plug seat about the plug.
Dependencies are inferred from the claim text.