Abstract: A hydraulic submersible rotary pump and drive assembly is deployed and recovered through production tubing or casing using metal hydraulic tubing lines. The assembly is used in conventional oil and gas well bores, but is particularly advantageous in slant or horizontal applications for artificial fluid lift or water injection. It eliminates mechanical drive shafts running from surface, and allows rotary pumps to be changed without pulling the production tubing. The torque neutralizing drive assembly incorporates a ported connector sub to attach a submersible hydraulic drive motor to a submersible rotary production pump, a conventional pump seating nipple in the production tubing, and a seating cup assembly on the drive to seal the pump discharge from the pump suction within the tubing. Alternately, the assembly is used with a pack-off assembly to seal against a production casing or open hole when it is desirable not to use production tubing.

Abstract: A hydraulic submersible rotary pump and drive assembly is provided which can be deployed and recovered through production tubing or casing using hydraulic metal tubing lines. The assembly can be used in conventional oil and gas well bores, but is particularly advantageous in slant or horizontal oil and gas well bores for artificial fluid lift or water injection. It eliminates mechanical drive shafts running from surface to a bottom hole rotary pump, and allows rotary pumps to be changed without pulling out the production tubing. The drive assembly incorporates a ported torque neutralizing connector sub to attach a suitable hydraulic drive motor to a selected submersible rotary production pump. The pump drive also incorporates the use of a conventional pump seating nipple in the production tubing and seating cup assembly on the drive to seal the pump discharge from the pump suction within the tubing.

Abstract: A flow control assembly is provided for a submersible pump drive which has a hydraulic drive motor and a bearing pack for sealing a drive shaft which transfers drive from the drive motor to an oil well pump. The flow control assembly incorporates a production containment device for engaging said bearing pack The production containment device has a collar for supporting the bearing pack, drive shaft and hydraulic drive motor within the submersible pump drive, and a passageway through the collar for channeling fluid therethrough. The flow control assembly further includes a seal protection device for demountably engaging the bearing pack opposite the hydraulic drive motor. The seal protection device has a fluid deflecting cone shaped tip and a hollow cylindrical portion adjacent the tip for receiving a lubricant to impede any fluid entering the seal protection device from migrating through the bearing pack.