Universal pressure protector for a polish rod

Details Universal pressure protector for a polish rod Universal pressure protector for a polish rod

E - Fixed Constructions

21

B

E21B 33/02 (2006.01) E21B 33/068 (2006.01) F16K 41/02 (2006.01)

Patent

CA 2452696

Method and apparatus for protecting a wellhead drive assembly has a housing having a polish rod seal and utilizes standard flanges adapted to fit between the existing stuffing box of any wellhead drive assembly and the standard flange of a well for extending the longevity of the existing stuffing box. In another embodiment, the housing, with or without a polish rod seal, protects the wellhead drive assembly and sealing components from damage due to flushing pressures. The protector housing introduces a sealing ring adjacent the well end that seals around a tapered rod coupler of the polish rod when so lifted for preventing high flushing pressure from being exerted directly onto seal elements thereabove. As in the first embodiment, a polish rod seal can be fit to the housing for protecting a stuffing box portion of the wellhead assembly in addition to the sealing ring used for protection during flushing operations.

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