Screw-set high-pressure packer

Claim 1

A SCREW-SET WELL PACKER, COMPRISING, A TUBULAR PACKER MANDREL, A BY-PASS VALVE ASSEMBLY CONNECTABLE TO AN OPERATING PIPE STRING, MEANS FORMING A ROTATABLE CONNECTION BETWEEN THE VALVE ASSEMBLY AND THE UPPER END OF THE PACKER MANDREL, A RADIALLY EXPANSIBLE SLIP-AND-SEAL ASSEMBLY MOUNTED ABOUT THE MANDREL FOR OPERATIVE ENGAGEMENT WITH A SURROUNDING WELL CASING, SLIP ACTUATING SLEEVE MEANS SURROUNDING SAID MANDREL AND HAVING SCREW CONNECTION THERETO CONSTRUCTED AND ARRANGED TO ACTUATE SAID SLIP-AND-SEAL ASSEMBLY IN RESPONSE TO ROTATION RELATIVE TO THE MANDREL, SAID ROTATABLE CONNECTION INCLUDING A SETTING SLEEVE EXTENDING ABOUT SAID SLIP ACTUATING SLEEVE MEANS AND HAVING A LONGITUDINALLY SLIDABLE NON-ROTATABLE CONNECTION THERETO WHEREBY TO TRANSMIT ROTATION OF SAID BY-PASS VALVE ASSEMBLY TO SAID ACTUATING SLEEVE MEANS, AND ANCHOR MEANS CARRIED BY THE LOWER END OF SAID MANDREL FOR ENGAGING SAID WELL CASING TO HOLD SAID MANDREL AGAINST ROTATION DURING ACTUATION OF SAID SLIP-AND SEAL ASSEMBLY.