Tension packer

Claim 1

A PACKER ASSEMBLY ADAPTED TO BE SUSPENDED ON THE LOWER END OF A PIPE STRING AND POSITIONED IN A WELL CASING, COMPRISING IN COMBINATION: AN ELONGATED CYLINDRICAL HOUSING PROVIDED WITH MEANS FOR FRICTIONALLY ENGAGING THE WALL OF SAID CASING, SPACED APART SLIPS EXTENDING THROUGH WINDOWS IN THE WALL OF SAID HOUSING, A HOLLOW MANDREL COAXIALLY ALIGNED WITH AND EXTENDING THROUGH SAID HOUSING, SAID MANDREL COMPRISED OF AN UPPER SECTION AND A LOWER SECTION RELEASABLY CONNECTED TOGETHER BY A SAFETY COLLAR FIXED TO THE LOWER END OF SAID UPPER SECTION ABOVE SAID SLIPS, A RELEASABLE LOCKING MEANS RELEASABLY CONNECTING SAID SAFETY COLLAR TO THE WALL OF SAID HOUSING, A VALVE SLEEVE HAVING A LATERAL PORT THEREIN, SAID VALVE SLEEVE BEING SLIDABLY ARRANGED ABOUT SAID UPPER MANDREL SECTION AND OPERABLY ENGAGING THEREWITH FOR LIMITED VERTICAL MOVEMENT THEREON, THE UPPER END OF SAID VALVE SLEEVE ADAPTED TO BE CONNECTED INTO THE LOWER END OF SAID PIPE STRING, SAID UPPER MANDREL SECTION CLOSING SAID PORT IN ITS UPPERMOST POSITION AND OPENING SAID PORT IN ITS LOWERMOST POSITION, A SLIP OPERATING MEMBER SLIDABLY ARRANGED ON SAID LOWER MANDREL SECTION AND FORMED TO BIAS SAID SLIPS OUTWARDLY UPON UPWARD MOVEMENT OF SAID MEMBER RELATIVE TO SAID SLIPS, THE LOWER END OF SAID MEMBER EXTENDING OUT THE LOWER END OF SAID HOUSING, A FRANGIBLE TENSION SLEEVE CONNECTED TO THE LOWER END OF SAID MEMBER AND OPERABLY ENGAGING SAID LOWER SECTION WHEREBY UPWARD MOVEMENT OF SAID MEMBER RELATIVE TO SAID MANDREL IS PREVENTED WHILE UPWARD MOVEMENT OF SAID MANDREL RELATIVE TO SAID MEMBER IS ALLOWED, A DEFORMABLE PACKER SLEEVE POSITIONED ABOUT SAID LOWER MANDREL SECTION AND EXTENDING FROM THE LOWER END OF SAID MEMBER TO AN ANNULAR PLATE FIXED TO THE LOWER END OF SAID MANDREL, SAID PACKER SLEEVE BEING EXPANDABLE RADIALLY INTO CONTACT WITH SAID WELL CASING UPON UPWARD MOVEMENT OF SAID MANDREL RELATIVE TO SAID MEMBER, A REMOVABLE SLEEVE MEMBER THREADED INTO THE UPPER END OF SAID HOUSING FOR LIMITING THE UPWARD MOVEMENT OF SAID UPPER MANDREL SECTION WHEN SAID MANDREL SECTIONS ARE DISCONNECTED, SAID ASSEMBLY PROVIDING AN AXIAL BORE THERETHROUGH.