A tubing mounted completion assembly that includes at least one downhole valve assembly and at least one contingency device. The contingency device or devices can be associated with and can be separate from the downhole valve assembly. The contingency device or devices can be adapted to operate upon
A tubing mounted completion assembly that includes at least one downhole valve assembly and at least one contingency device. The contingency device or devices can be associated with and can be separate from the downhole valve assembly. The contingency device or devices can be adapted to operate upon failure of operation of the downhole valve assembly.
대표청구항▼
1. A tubing mounted completion assembly comprising: at least one downhole valve assembly comprising a primary valve actuator, anda plurality of contingency devices associated with and separate from the downhole valve assembly, each of the plurality of contingency devices arranged in series in a tubi
1. A tubing mounted completion assembly comprising: at least one downhole valve assembly comprising a primary valve actuator, anda plurality of contingency devices associated with and separate from the downhole valve assembly, each of the plurality of contingency devices arranged in series in a tubing with the downhole valve assembly, wherein each contingency device is adapted to actuate the downhole valve assembly upon failure of the primary valve actuator to actuate the downhole valve assembly, and at least one of the plurality of contingency devices comprises a mechanically-actuated contingency device and at least one of the plurality of contingency devices comprises a hydraulically-actuated contingency device, the mechanically-actuated contingency device and the hydraulically-actuated contingency device being independently coupled to the downhole valve assembly by respective conduits containing fluid, such that actuation of either the mechanically-actuated contingency device or the hydraulically-actuated contingency device causes displacement of a sealed hydraulic fluid to actuate the downhole valve assembly. 2. The tubing mounted completion assembly according to claim 1, wherein one or more of the plurality of contingency devices is operable to open the downhole valve assembly when it is closed due to failure to open. 3. The tubing mounted completion assembly according to claim 1, wherein one or more of the plurality of contingency devices is operable to close the downhole valve assembly when it is open due to failure to close. 4. The tubing mounted completion assembly according to claim 1, further comprising a contingency device operable to control flow of production fluid around the downhole valve assembly when it is closed due to failure to open. 5. The tubing mounted completion assembly according to claim 1, wherein one or more contingency devices are arranged uphole of the downhole valve assembly. 6. The tubing mounted completion assembly according to claim 1, wherein one or more contingency devices are arranged downhole of the downhole valve assembly. 7. The tubing mounted completion assembly according to claim 1, wherein each contingency device operates independently from other contingency devices in the tubing mounted completion assembly and wherein each contingency device is associated with secondary operation of the downhole valve assembly independently from the other contingency devices. 8. The tubing mounted completion assembly according to claim 1, wherein one or more of the contingency devices is primed for operation upon removal of a downhole tool assembly. 9. The tubing mounted completion assembly according to claim 8, wherein in the primed state the contingency device remains inoperable until a subsequent event takes place uphole or downhole. 10. The tubing mounted completion assembly according to claim 9, wherein the subsequent event is applied fluid pressure from a location uphole of the downhole valve assembly. 11. The tubing mounted completion assembly according to claim 10, wherein the applied fluid pressure is within a predetermined range. 12. The tubing mounted completion assembly according to claim 1, wherein the at least one contingency device is operable to open the downhole valve assembly when it is closed due to failure to open; the tubing mounted completion assembly further comprising a contingency device operable to close the downhole valve assembly when it is open due to failure to close, and at least one contingency device adapted to control fluid flow around the downhole valve assembly in the event it remains closed and causes an obstruction in the tubing mounted completion assembly. 13. The tubing mounted completion assembly according to claim 1, wherein the downhole valve assembly further comprises a secondary valve actuator, and the contingency device is adapted to operate upon failure of the primary valve actuator and the secondary valve actuator to actuate the downhole valve assembly. 14. The tubing mounted completion assembly according to claim 13, wherein each of the plurality of contingency devices comprises a respective axial passage in fluid communication with a bore of the downhole valve assembly. 15. A tubing mounted completion assembly comprising: at least one downhole valve assembly, andone or more contingency devices associated with and separate from the downhole valve assembly, wherein at least one of the one or more contingency devices is adapted to operate upon failure of the downhole valve assembly, and wherein at least one of the one or more contingency devices is primed for operation upon removal of a downhole tool assembly. 16. The tubing mounted completion assembly according to claim 15, wherein the at least one contingency device is operable to open the downhole valve assembly when it is closed due to failure to open, and the at least one contingency device is operable to close the downhole valve assembly when it is open due to failure to close. 17. The tubing mounted completion assembly according to claim 15, wherein at least one of the one or more contingency devices is operable to control flow of production fluid around the downhole valve assembly when it is closed due to failure to open. 18. The tubing mounted completion assembly according to claim 15, wherein the assembly comprises a plurality of contingency devices each arranged in series with the downhole valve assembly. 19. The tubing mounted completion assembly according to claim 18, wherein the one or more contingency devices are arranged uphole of the downhole valve assembly. 20. The tubing mounted completion assembly according to claim 18, wherein each contingency device operates independently from other contingency devices in the tubing mounted completion assembly and wherein each contingency device is associated with secondary operation of the downhole valve assembly independently from the other contingency devices. 21. The tubing mounted completion assembly according to claim 15, wherein in the primed state the contingency device remains inoperable until a subsequent event takes place uphole or downhole. 22. The tubing mounted completion assembly according to claim 21, wherein the subsequent event is applied fluid pressure from a location uphole of the downhole valve assembly. 23. A tubing mounted completion assembly comprising: at least one downhole valve assembly comprising a primary valve actuator, anda plurality of contingency devices associated with and separate from the downhole valve assembly, each of the plurality of contingency devices arranged in series in a tubing with the downhole valve assembly, wherein each contingency device is adapted to actuate the downhole valve assembly upon failure of the primary valve actuator to actuate the downhole valve assembly, and at least one of the plurality of contingency devices comprises a mechanically-actuated contingency device and at least one of the plurality of contingency devices comprises a hydraulically-actuated contingency device, the mechanically-actuated contingency device comprising: a tubular body coupled to the tubing;a movable operating sleeve mounted coaxially with the tubular body and defining an annular reservoir containing hydraulic fluid between the operating sleeve and the tubular body, with the annular reservoir being coupled to the conduit coupled to the downhole valve assembly;a mechanical coupling device incorporated with the operating sleeve, and operable to engage with a downhole tool conveyed through the completion assembly, such that movement of the downhole tool through the completion assembly causes the operating sleeve to translate through the tubular body; anda piston member projecting radially into the annular reservoir, which acts to displace the hydraulic fluid to close the downhole valve assembly as the operating sleeve moves in a downhole direction through the tubular body. 24. A tubing mounted completion assembly comprising: at least one downhole valve assembly comprising a primary valve actuator, anda plurality of contingency devices associated with and separate from the downhole valve assembly, each of the plurality of contingency devices arranged in series in a tubing with the downhole valve assembly, wherein each contingency device is adapted to actuate the downhole valve assembly upon failure of the primary valve actuator to actuate the downhole valve assembly, and at least one of the plurality of contingency devices comprises a mechanically-actuated contingency device and at least one of the plurality of contingency devices comprises a hydraulically-actuated contingency device, the hydraulically-actuated contingency device comprising: a tubular body coupled to the tubing;an inlet port in fluid communication with a wellbore annulus region;an outlet port in fluid communication with the conduit coupled to the downhole valve assembly; andan internal actuation mechanism comprising a piston member situated between the inlet port and the outlet port, such that fluid pressure from the wellbore annulus region acts on the piston member to displace hydraulic fluid through the outlet port to close the downhole valve assembly.
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