Safety valve lock out system and method
AssigneeHalliburton Energy Services, Inc.
InventorRobert W. Crow
Life of this patent
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Abstract
A safety valve lock out system and method. In a described embodiment, a method of locking out a safety valve in a subterranean well includes the steps of: flowing a hardenable fluid into the safety valve; and preventing a closure device of the safety valve from closing with the hardenable fluid.
Claims31
A method of locking out a safety valve in a subterranean well, the method comprising the steps of:
- flowing a hardenable fluid into the safety valve;
- and
- preventing a closure device of the safety valve from closing with the hardenable fluid, the closure device being prevented from closing when the hardenable fluid has hardened.
A system for locking out a safety valve positioned in a subterranean well, the system comprising:
- a container having a hardenable fluid therein;
- and
- a fluid transfer device for transferring the hardenable fluid from the container to the safety valve to prevent a closure member of the safety valve from closing, the closure device being prevented from closing when the hardenable fluid has hardened.
A system for locking out a safety valve positioned in a subterranean well, the system comprising:
- a container having a hardenable fluid therein;
- and
- a fluid transfer device for transferring the hardenable fluid from the container to the safety valve to prevent a closure member of the safety valve from closing, and
- wherein the container and fluid transfer device are included in a well tool receivable within a flow passage of the safety valve.
A system for locking out a safety valve positioned in a subterranean well, the system comprising:
- a container having a hardenable fluid therein;
- and
- a fluid transfer device for transferring the hardenable fluid from the container to the safety valve to prevent a closure member of the safety valve from closing,
- wherein the container and fluid transfer device are configured to flow the hardenable fluid into an internal chamber of the safety valve,
- wherein the fluid transfer device exchanges the hardenable fluid for fluid initially in the internal chamber, and
- wherein the fluid initially in the internal chamber is received into a well tool which includes the container when the hardenable fluid is flowed into the internal chamber.
Dependencies are inferred from the claim text.