Retrievable packer and anchor apparatus

Claim 1

IN A WELL TOOL ADAPTED TO BE SET IN A WELL PIPE INCLUDING, A TUBULAR SUPPORT, AN ANCHORING ASSEMBLY ENCIRCLING THE SUPPORT AND COMPRISING AN UPPER EXPANDER, A LOWER EXPANDER SPACED THEREBELOW, AND GRIPPING MEMBERS SPACED ABOUT AND CO-ACTING WITH THE EXPANDERS, MOVEMENT OF THE EXPANDERS TOWARD EACH OTHER EXPANDING THE GRIPPING MEMBERS INTO PIPE-GRIPPING POSITION AND MOVEMENT OF THE EXPANDERS AWAY FROM EACH OTHER RETRACTING SAID GRIPPING MEMBERS, A RELEASE MANDREL CONNECTED WITH THE UPPER EXPANDER AND SURROUNDING THE SUPPORT, A RELEASABLE CONNECTION BETWEEN SAID RELEASE MANDREL AND SUPPORT, PREVENTING LONGITUDINAL MOVEMENT BETWEEN THE MANDREL AND SUPPORT, A SECOND MANDREL CONNECTED WITH THE LOWER EXPANDER AND SLIDEABLE ON THE SUPPORT, PRESSURE-ACTUATED MEANS ON THE SUPPORT BELOW THE LOWER EXPANDER AND HAVING TWO PARTS MOVABLE LONGITUDINALLY RELATIVE TO EACH OTHER, ONE PART BEING ATTACHED TO THE SUPPORT AND THE SECOND PART BEING ATTACHED TO THE SECOND MANDREL, MOVEMENT OF SAID PARTS OF SAID PRESSURE-ACTUATED MEANS IN ONE DIRECTION EFFECTING A RELATIVE MOVEMENT OF THE RELEASE MANDREL AND THE SECOND MANDREL IN A DIRECTION TO MOVE THE UPPER AND LOWER EXPANDERS WITH RESPECT TO EACH OTHER TO THEREBY URGE THE GRIPPING MEMBERS INTO PIPE-GRIPPING POSITION, AND MEANS FOR CONDUCTING A PRESSURE FLUID TO THE PARTS OF THE PRESSURE-ACTUATED MEANS TO MOVE THE PARTS THEREOF IN THAT DIRECTION WHICH URGES THE GRIPPING MEMBERS INTO GRIPPING POSITION.