US 11,773,857 B2
Dual ESP with selectable pumps
Xiao Nan Lu, Claremore, OK (US); Joseph Robert McManus, Claremore, OK (US); Howard Thompson, Claremore, OK (US); Zheng Ye, Claremore, OK (US); and Risa Rutter, Claremore, OK (US)
Assigned to Baker Hughes Holdings LLC, Houston, TX (US)
Filed by Baker Hughes, a GE Company, LLC, Houston, TX (US)
Filed on Oct. 14, 2019, as Appl. No. 16/601,508.
Claims priority of provisional application 62/744,981, filed on Oct. 12, 2018.
Prior Publication US 2020/0116154 A1, Apr. 16, 2020
Int. Cl. E21B 43/20 (2006.01); F04D 19/02 (2006.01); E21B 43/12 (2006.01)
CPC F04D 19/028 (2013.01) [E21B 43/12 (2013.01); E21B 43/20 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A pumping system for use in recovering fluids from a wellbore, the pumping system comprising:
a motor;
a drive shaft configured for rotation by the motor;
an upper pump positioned above the motor, wherein the upper pump includes an upper pump shaft;
an upper directional coupling connected between the drive shaft and the upper pump shaft, wherein the upper directional coupling is configured to lock the upper pump shaft to the drive shaft when the drive shaft is rotated in a first direction;
a lower pump positioned below the motor, wherein the lower pump includes a lower pump shaft; and
a lower directional coupling connected between the drive shaft and the lower pump shaft, wherein the lower directional coupling is configured to lock the lower pump shaft to the drive shaft when the drive shaft is rotated in a second direction.