Well tubing mandrel with combination guard, guide and latch arrangement

摘要

A mandrel for use in a well tubing has a body with a bore extending therethrough for alignment with the well tubing with a valve pocket offset from the mandrel bore for receiving a valve or other tool therein and guard and guide means for particular configuration are formed at the upper end of said pocket to restrict access thereto and includes projection means to assist in retaining valves in position in the valve pocket.