ucker rod pump is equipped with a seating nipple(there are two seating nipples in API-RHBM-AC), seating nipple connection on the tubing string, down to the bottom of the well with the tubing string. Plunger assembly connection on the sucker rod string and with the pump overall down to seating nipple position together, pump with fixed inside the seating nipple, plunger assembly with the sucker rod string up and down reciprocating movement to achieve pumping work. If the pump appeared quality problem, need not put forward the tubing string, only need put the whole pump forward well through the sucker rod string together, operation is simple.
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