Pump drive head with stuffing box

Details Pump drive head with stuffing box Pump drive head with stuffing box

E - Fixed Constructions

21

B

E21B 33/06 (2006.01) E21B 4/00 (2006.01) E21B 33/08 (2006.01) E21B 43/12 (2006.01)

Patent

CA 2716430

A pump drive head for a progressing cavity pump comprises a top mounted stuffing box rotatably disposed around a compliantly mounted standpipe with a self or manually adjusting pressurization system for said stuffing box. To prevent rotary and vertical motion of the polish rod while servicing the stuffing box, a polished rod lock-out clamp is provided with the pump drive head integral with or adjacent to a blow-out-preventer which can be integrated with the pump drive head to save space and cost. A centrifugal backspin braking system located on the input shaft and actuated only in the backspin direction and a gear drive between the input shaft and output shaft are provided.

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