HYDRAULICALLY DRIVEN OIL WELL PUMP

摘要

A down hole rotary pump in a well is driven by a down hole hydraulic motor. The motor is mounted in the production string using a motor mount. The motor mount is ported to allow the flow of produced fluid past the motor and through the mount to the production tubing above the motor. This arrangement eliminates the sucker rod drive that causes power loss and tubing wear and mitigates problems in completing directional and deviated wells.