Method and apparatus for isolating well pump units

Details Method and apparatus for isolating well pump units Method and apparatus for isolating well pump units

H - Electricity

01

B

103/142

H01B 17/00 (2006.01) E21B 17/00 (2006.01) F04B 47/02 (2006.01) H01B 17/30 (2006.01)

Patent

CA 1233366

ABSTRACT There is disclosed in a well pump unit wherein the well is provided with a polish rod and the pump unit includes a draw cable adapted to reciprocate the polish rod, a method for increasing the life of bearings, gears, and the like by eliminating electrical pitting in the pump unit. comprising the steps of providing a carrier bar operative to interconnect the draw cable and the polish rod wherein the carrier bar is split into first and second bar segments having complementary and opposed cable bores adapted to receive the draw cable and having complimentary and opposed rod bores adapted to receive the polish rod, electrically isolating the polish rod from the draw cable by positioning insulating material between the first and second bar segments to prohibit electrical contact therebetween and by positioning insulating material in the cable bores and the rod bores in such orientation whereby the draw cable is prevented from contact- ing the first and second bar segments and the polish rod is prevented from contacting the first and second bar segments; and mounting the draw cable and said polish rod to said carrier bar.

449260

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