a method of circulating through a reciprocating downhole tubing pump and a reciprocating downhole tubing pump . the reciprocating downhole tubing pump has a standing valve assembly and a travelling valve . the method involves displacing and disabling , without removing , the standing ball valve assembly and the travelling valve . this can be done with pins which knock the balls out of position or by enclosing the balls in cages which can be mechanically moved out of position with linkages . with the standing ball valve assembly and the travelling valve disabled , circulation can occur through the reciprocating downhole tubing pump . this has a number of advantages , such as removal of blockages due to sand accumulation .