Abstract: Tubing rotator 10 includes a main body or rotator spool 20, a selected bottom connector 50, and a selected top connector 70. The bottom connector 50 may be adapted for a screw cap type wellhead or a flanged wellhead. The top connector may comprise a pin connection mandrel 72 with either a threaded or flanged upper end, or a flow-T and/or BOP housing that bolts to the top of the spool. The tubing rotator may be adapted for hanging the tubing directly from the tubing rotator or may be used with a double box bushing 110 hung within the tubing rotator. The tubing rotator may also use a swivel hanger 120 included in the tubing head.

Abstract: The present invention provides a pump drive assembly for a deep well, submersible, progressing cavity pump that includes an internal hydraulic pump for slowing the counter rotation of the polished rod induced by recoil in the sucker rod. The pump drive assembly includes a housing enclosing a hydraulic fluid reservoir and a gear chamber separate from the reservoir. A drive shaft extends into the housing and includes a drive gear integral with or keyed to the drive shaft. A main shaft also extends into the housing and includes a main gear integral with or keyed to the main shaft. The main gear is engaged with the drive gear within the gear chamber, where the gear chamber includes an inlet and an outlet channel providing fluid communication between the gear chamber and the reservoir, so that the gears form a reversible gear pump within the housing. The reversible gear pump operates to pump hydraulic fluid from the reservoir into the gear chamber and back into the reservoir.