HIGH TEMPERATURE WELL PACKER

摘要

A well packer has a casing engaging slip mechanism and a packing element carried on a tubular body which is released from the slip assembly enabling setting of the slips and packing by an upward pull on a running in string of pipe. The body and the expander for the slips are locked to hold the packer set. A length of tubing extends through a seal in the body and is released to be slideable in the body enabling temperature change responsive elongation and contraction of the running pipe, without affecting the packer, A shearable release enables retrieval of the packer assembly by pulling on the running pipe. An emergency release of the running pipe is accomplished by releasing a guide on the end of the slideable tubing.