Sucker rod pump is equipped with a support joint (there are two support joints in API-RHBM-AC), attached to the tubing string, which will down to the bottom of the well with the tubing string. Plunger assembly connected to rod string and together with the pump overall down to joint position, then the pump is fixed inside the joint. Plunger assembly with the sucker rod string up and down reciprocating movement to achieve pumping work.When it breaks down, no need to lift the tubing string out, just put the whole pump out of the well through the rod string.
