Patent ID: 8191640

Claim:
A pump seating nipple for engagement with a downhole pump in order to seal and anchor the downhole pump relative to the pump seating nipple, wherein the downhole pump is a reciprocating pump or a rotary pump, the pump seating nipple having a proximal end, a distal end, and an internal surface defining a bore extending between the proximal end and the distal end for receiving the downhole pump, the pump seating nipple comprising: (a) a nipple sealing component associated with the internal surface, for cooperating with a complementary pump sealing component associated with the downhole pump in order to provide a seal device between the pump seating nipple and the downhole pump; (b) a nipple axial force anchoring component associated with the internal surface, for cooperating with a complementary pump axial force anchoring component associated with the downhole pump in order to provide an axial force anchor device for resisting axial movement of the downhole pump relative to the pump seating nipple; and (c) a nipple rotational force anchoring component associated with the internal surface, for cooperating with a complementary pump rotational force anchoring component associated with the downhole pump in order to provide a rotational force anchor device for resisting rotational movement of the downhole pump relative to the pump seating nipple, the rotational force anchor device comprising: a latch member; a complementary latch slot for engaging the latch member; and a resilient arm attached to the latch member for connecting the latch member with the downhole pump, wherein the latch member is biased toward the latch slot by the resilient arm when the downhole pump is received within the bore of the pump seating nipple so that the latch member is urged into engagement with the latch slot when the latch member is adjacent to the latch slot, and wherein the latch slot is defined by a proximal wall, a distal wall and two sidewalls in the internal surface of the pump seating nipple and wherein at least one of the sidewalls provides a latch slot torque bearing surface for engagement with a complementary latch member torque bearing surface on the latch member in order to resist rotational movement of the downhole pump relative to the pump seating nipple.