Patent ID: 7591305
Filing Date: 2009-09-22
Classification: E21B

Abstract:
1. A packer tool for releasably securing a packer within a well bore, the packer tool including: an inner mandrel; said inner mandrel having a longitudinal bore therein and an upper and a lower end; a mandrel body selectively installed on said inner mandrel between an upper slip body and a lower slip body; at least one packer on said mandrel body for expansion about said mandrel body to selectively seal a zone above said packer tool from a zone below said packer tool; said mandrel body having a tubular extension at a lower end; said tubular extension having a collet at an end remote from said mandrel body; said mandrel body lower end further including an end portion movable relative to said mandrel body to cause said at least one packer to expand and engage the packer against the well bore; said lower slip body selectively slidably mounted on a first portion of said inner mandrel to selectively cause said end portion to move to cause said at least one packer to expand and engage the packer against the well bore; said upper slip body slidably mounted on said inner mandrel to compress said mandrel body between said upper slip body and said lower slip body; said collet configured to mount coaxially about said inner mandrel and to closely surround said inner mandrel, whereby said lower slip body is not slidably removable over said collet when said mandrel body is installed on said inner mandrel and said lower slip body is slidably removable from said collet when said mandrel body is not installed on said inner mandrel.