US 11,851,985 B1
Electric subsurface safety valve nipple assembly
AbdulMalek Sulaiman AlMatrodi, Dammam (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Feb. 28, 2023, as Appl. No. 18/115,538.
Int. Cl. E21B 34/10 (2006.01)
CPC E21B 34/105 (2013.01) [E21B 2200/05 (2020.05)] 20 Claims
OG exemplary drawing
 
1. A well system comprising:
a production tubing string configured to be disposed within a wellbore at least partially filled with a wellbore fluid;
a nipple assembly connected to the production tubing string, the nipple assembly comprising;
a main body with a central bore configured to receive a hydraulically operated wireline-retrievable subsurface safety valve (WLSSSV);
a pressure chamber open to the central bore via a sidewall port, the pressure chamber thereby configured to receive a volume of wellbore fluid from the central bore via the sidewall port as the nipple assembly is disposed within the wellbore prior to receipt of the WLSSSV in the central bore, wherein the nipple assembly configured such that the sidewall port is in fluid communication with a pressure inlet port of the WLSSSV when the WLSSSV is received and releasably locked in the central bore;
an electrically operated piston assembly comprising a motor operable to drive a piston in response to an electric signal, thereby decreasing the volume of the pressure chamber and generating an increase in hydraulic pressure of the wellbore fluid at the pressure inlet port of the WLSSSV when the WLSSSV is releasably locked in the central bore; and
an electric cable configured to convey the electric signal from a surface location to the motor.