US 11,814,928 B2
Isolation valves
Ganesh Balasubramanian, Rosharon, TX (US); and Ashish Sharma, Houston, TX (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Appl. No. 17/291,098
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed Nov. 4, 2019, PCT No. PCT/US2019/059633
§ 371(c)(1), (2) Date May 4, 2021,
PCT Pub. No. WO2020/096947, PCT Pub. Date May 14, 2020.
Claims priority of provisional application 62/755,901, filed on Nov. 5, 2018.
Prior Publication US 2022/0003074 A1, Jan. 6, 2022
Int. Cl. E21B 34/06 (2006.01); E21B 34/14 (2006.01)
CPC E21B 34/063 (2013.01) [E21B 34/14 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A valve assembly usable in a subterranean well, comprising:
a valve adapted to selectively isolate a region of the subterranean well and comprising a mandrel selectively releasable to operate the valve; and
a separating apparatus comprised of:
a first sleeve;
a second sleeve coupled to the mandrel;
a member being formed from a functional material and extending through the first sleeve and the second sleeve to couple the first sleeve to the second sleeve and restrain the mandrel; and
a heating device member connected to the member and operable to heat the member when an electrical current is applied to the heating device member to fracture the member and decouple the first sleeve from the second sleeve to release the mandrel.