US 11,905,790 B2
Safety valve with electrical actuators
Christian Chouzenoux, Clamart (FR); Cash Elston, Taubate (BR); Olivier Loeuillet, Clamart (FR); Francesco Vaghi, Houston, TX (US); and Oguzhan Guven, Bellaire, TX (US)
Assigned to Schlumberger Technology Corporation, Sugar Land, TX (US)
Appl. No. 17/904,740
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed Feb. 24, 2021, PCT No. PCT/US2021/019432
§ 371(c)(1), (2) Date Aug. 22, 2022,
PCT Pub. No. WO2021/173684, PCT Pub. Date Sep. 2, 2021.
Claims priority of provisional application 63/147,018, filed on Feb. 8, 2021.
Claims priority of provisional application 62/980,931, filed on Feb. 24, 2020.
Prior Publication US 2023/0018892 A1, Jan. 19, 2023
Int. Cl. E21B 34/06 (2006.01)
CPC E21B 34/066 (2013.01) [E21B 2200/05 (2020.05)] 20 Claims
OG exemplary drawing
 
10. A method of operating an electric downhole safety valve, the electric downhole safety valve comprising a flapper, an internal tubing sleeve, a return spring, an electric magnet, an actuator, and downhole electronics, the method comprising:
providing a command from the surface to the downhole electronics;
in response to the command from the surface, extending the actuator, thereby shifting the internal tubing sleeve from a closed position to an open position to open the flapper, wherein the return spring is compressed when the internal tubing sleeve is in the open position;
activating the electric magnet;
retracting the actuator while the internal tubing sleeve is held in the open position by the activated electric magnet.