Paper: Reg Prostebby and Bob Ciarla, Quinns Oilfield Supply, Saul L. Tovar, Occidental Permian Ltd.

The developoment of a new cage for bottomhole sucker rod pumps was initiated by Oxy Petrolem to solve prematrue failures of existing cages in their water flood fields. Oxy approached Quinn's with the purpose of designing a cage in the Wasson/Clearforks area.After reviewing the wells, Quinn's designed a new cage that is a one piece cage, can handle an alternate pattern ball, have better flow characteristics with less pressure drop than any existing cages, and handle deep, corrosive well conditions.Quinn's utilized their finite element anaylysis software to design this new cage. The QP2 cages were built, ran and tested. Quinn's also successfully developed interim cages that achieved longer run lives while develping the QP2 cage.This paper will expand on the design process that was undertaken to fulfill Oxy's request for a better cage and also verify the design criteria.