WIRELINE/COILED TUBING RETRIEVABLE WELL PUMP

摘要

A well pump assembly has an electric motor (21) that is secured to a lower end of a string of production tubing. The motor is powered by a power cable (25) that extends alongside the tubing to the surface. The motor has an upper end with a drive shaft coupling (29). The pump (37) for the motor is lowered through the productino tubing on a wireline, wire rope or coiled tubing. The pump has a lower end which has a driven shaft coupling (47) that makes up in stabbing engagement with the drive shaft coupling when the pump reaches the motor. A head (67) on the upper end of the pump assembly latches the pump in place.