TOOL FOR UNSEIZING AND LUBRICATING WELL VALVES, AND METHOD OF UNSEIZING SAID VALVES

摘要

A tool for unseizing and/or lubricating a valve having a protruding valve stem on an exterior periphery. The tool possesses a hollow tubular member, having at one end thereof an open, hollow, cylindrical flexible member adapted to be placed over and contain therewithin a portion of the valve stem. A circumferential tightening member, encircling one end of the flexible member, is provided, to permit the flexible member to sealingly engage the valve stem about the outer periphery thereof when the flexible member is placed over the valve stem. The tool further possesses a fluid inlet port, situated along a length of the tubular member, in fluid communication with an interior of the tubular member, and a pressurized fluid inlet port likewise in fluid communication with the interior of the tool.

主权项

1. A tool for unseizing and/or lubricating a valve, said valve being of a type having a valve stem or cylindrical housing on an exterior periphery having an interface surface between a rotating member of the valve, and the valve body, and a lubricating channel, said tool comprising:
a hollow tubular member, having at one end thereof an open, hollow, cylindrical flexible member adapted to be placed over and contain therewithin a portion of said valve stem and/or said cylindrical housing; a circumferential tightening member, encircling said one end of said flexible member so as to cause said flexible member at said one end, when placed over said portion of said valve stem or cylindrical housing and said circumferential tightening member is actuated, to sealingly engage said valve stem or cylindrical housing about said exterior periphery thereof; a fluid inlet port, situated along a length of said tubular member, in fluid communication with an interior of said tubular member; and a pressurized fluid inlet port, situated along a length of said tubular member or at an end opposite said one end, said pressurized fluid inlet having a coupling mechanism to allow supply of a pressurized fluid to said interior of said tubular member.