HOLD DOWN APPARATUS FOR PROGRESSING CAVITY

摘要

A hold down apparatus is taught for a progressing cavity pump of the type having a stator, a helical rotor locatable in the stator and rotated by a string of rods, the pump being insertable in a bore of a tubing string by carriage on the rod string. The hold down apparat us includes a sub connected to a lower end of the tubing, the sub having a bore open to the bo re of the tubing string and including a pump-engaging member; and a hold down member at the lower end of the stator for insertion into the sub, the hold down member having a bore therethrough with a tag bar extending thereacross and including a tubing-engaging member for engaging wi th the pump- engaging member of the sub and for abutting against the pump-engaging member hold the stator against rotation relative to the sub