US 12,258,840 B1
Sub-surface safety valve with energy harvesting system and wireless activation
Abdullah K. Al-Ghannam, Al-Ahsa (SA); and Sanjiv Kumar, Dhanbad (IN)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Aug. 29, 2023, as Appl. No. 18/457,935.
Int. Cl. E21B 34/16 (2006.01); E21B 34/06 (2006.01); E21B 41/00 (2006.01)
CPC E21B 34/16 (2013.01) [E21B 34/066 (2013.01); E21B 41/0085 (2013.01); E21B 2200/05 (2020.05)] 10 Claims
OG exemplary drawing
 
6. A method comprising:
providing a subsurface safety valve having an outer housing, the outer housing comprising an inner cylindrical surface;
disposing a flapper valve within the outer housing;
providing a motor, a battery, a turbine and a wireless receiver, wherein the wireless receiver, the battery and the motor are mounted axially adjacent to one another within the outer housing and along the inner cylindrical surface;
the turbine being mounted at the inner cylindrical surface of the outer housing, axially spaced apart from the wireless receiver, the battery and the motor;
the wireless receiver, the battery and the motor being disposed axially between the turbine and the flapper valve;
mounting a rotationally displaceable arm at the motor;
charging the battery with the turbine;
powering the motor with the battery;
receiving a signal at the wireless receiver; and
responsive to the received signal, transmitting a signal to the motor to pivotally displace the flapper valve,
wherein pivotally displacing the flapper valve comprises driving the rotationally displaceable arm with the motor.