Seal Property of Rubber Cylinder Shoulder in Packer

Abstract

The end of the rubber cylinder will flow into the annular space between the central oil pipe and the casing and form, which cause shoulder protrusion. This appearance will cause stress concentration at the end of the rubber cylinder, which may cause the end of the rubber cylinder to be damaged. In order to solve the problem of the shoulder protruding of sealing cylinder of packer, a kind of shoulder protector is designed in this paper. The effect of the designed shoulder protector is verified by the high temperature and high pressure test.