US 12,170,472 B2
Field attachable and pressure testable coupling for metal-to-metal motor lead extensions
Spencer Wilcox, Claremore, OK (US)
Assigned to Baker Hughes Oilfield Operations LLC
Filed by Baker Hughes Oilfield Operations LLC, Houston, TX (US)
Filed on Nov. 19, 2021, as Appl. No. 17/531,564.
Prior Publication US 2023/0163659 A1, May 25, 2023
Int. Cl. H02K 5/132 (2006.01); E21B 17/02 (2006.01); E21B 43/12 (2006.01); H01R 13/622 (2006.01); H02K 5/22 (2006.01)
CPC H02K 5/132 (2013.01) [E21B 17/0285 (2020.05); E21B 43/128 (2013.01); H01R 13/622 (2013.01); H02K 5/225 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A pumping system for use in recovering wellbore fluids from a wellbore, the pumping system comprising:
an electrical power source;
a motor drive connected to the power source;
a power cable connected to the motor drive;
a submersible electric motor;
a pump driven by the electric motor;
a motor lead coupler, wherein the motor lead coupler comprises:
a plurality of upper receivers;
a plurality of lower receivers;
an upper motor lead extension having an upper end and a lower end, wherein the upper end of the upper motor lead extension is connected to the power cable and the lower end of the upper motor lead extension is connected to the motor lead coupler, wherein the lower end of the upper motor lead extension includes a plurality of leads and wherein each of the plurality of leads comprises:
a conductor;
an insulator surrounding the conductor;
a metal tube surrounding the insulator;
an upper deformable ferrule around the outside of the metal tube;
an upper compression nut, wherein the upper compression nut can be tightened into the corresponding upper receiver to compress and deform the upper ferrule into a metal-to-metal sealed relationship with the corresponding upper receiver;
a lower motor lead extension having an upper end and a lower end, wherein the lower end of the lower motor lead extension is connected to the motor and the upper end of the lower motor lead extension is connected to the motor lead coupler, wherein the upper end of the lower motor lead extension includes a plurality of leads and wherein each of the plurality of leads comprises:
a conductor;
an insulator surrounding the conductor;
a metal tube surrounding the insulator;
a lower deformable ferrule around the outside of the metal tube;
a lower compression nut, wherein the lower compression nut can be tightened into the corresponding lower receiver to compress and deform the lower ferrule into a metal-to-metal sealed relationship with the corresponding lower receiver.