Method of releasing stuck pipe from wells

Claim 1

A METHOD FREEING FOR MOVEMENT WITHIN A WELL A TUBULAR MEMBER STUCK AGAINST THE WALL OF THE WELL BY A PRESSURE DIFFERENTIAL BETWEEN THE MUD COLUMN HYDROSTATIC PRESSURE IN THE WELL AND THE FORMATION PRESSURE AT THE STUCK POINT, SAID METHOD COMPRISING THE STEPS OF: PROVIDING A SEALED FLUID FLOW CONNECTION BETWEEN THE STUCK TUBULAR MEMBER AND THE TOP OF THE WELL, DETERMINING THE UPPER POINT IN THE WELL WHERE THE TUBULAR MEMBER IS STUCK, PERFORATING A SELECTED LENGTH OF SAID TUBULAR MEMBER BELOW ITS UPPERMOST STUCK POINT, SAID PERFORATING TAKING PLACE AT LEAST IN THE DIRECTION OF THE PORTION OF WELL WALL AGAINST WHICH SAID TUBULAR MEMBER IS STUCK, PUMPING FLUID DOWN SAID FLUID FLOW CONNECTION AND INTO SAID TUBULAR MEMBER AND OUT THE PERFORATIONS THEREIN TO BE DISCHARGED AT A PRESSURE ABOVE THE HYDROSTATIC PRESSURE OF SAID MUD COLUMN WITHIN THE WELL AT THAT POINT, INJECTING SAID FLUID INTO THE FORMATION UNTIL THE FLUID PRESSURE WITHIN THE FORMATION IS SUBSTANTIALLY AT LEAST EQUAL TO THE FLUID PRESSURE WITHIN THE BORHOLE AT THAT POINT, ADDING TO SAID FLUID BEING PUMPED DOWN THE TUBULAR MEMBER AND INTO THE FISH, PERFORATION BLOCKING ELEMENTS OF A SIZE AND CONFIGURATION AND SPECIFIC GRAVITY TO BECOME LODGED AGAINST THOSE PERFORATIONS THROUGH WHICH A DISPORPORTIONATELY LARGE AMOUNT OF SAID FLUID IS PASSING AND AT LEAST PARTLY BLOCKING SAID PERFORATIONS TO LIMIT THE FLOW THERETHROUGH AND DIVERT A MAJOR PORTION OF THE FLUID FLOW TO OTHER PERFORATIONS, AND SUBSEQUENTLY, MOVING SAID TUBULAR MEMBER AFTER THE FLUID BEING DISCHARGED FROM SAID PERFORATIONS HAS PUSHED IT AWAY FROM THE WELL WALL.

Claim 2

A METHOD FREEING FOR MOVEMENT WITHIN A WELL A TUBULAR MEMBER STUCK AGAINST THE WALL OF THE WELL BY A PRESSURE DIFFERENTIAL BETWEEN THE MUD COLUMN HYDROSTATIC PRESSURE IN THE WELL AND THE FORMATION PRESSURE AT THE STUCK POINT, SAID METHOD COMPRISING THE STEPS OF: PROVIDING A SEALED FLUID FLOW CONNECTION BETWEEN THE STUCK TUBULAR MEMBER AND THE TOP OF THE WELL, DETERMINING THE UPPER POINT IN THE WELL WHERE THE TUBULAR MEMBER IS STUCK, PERFORATING A SELECTED LENGTH OF SAID TUBULAR MEMBER BELOW ITS UPPERMOST STUCK POINT, SAID PERFORATING TAKING PLACE AT LEAST IN THE DIRECTION OF THE PORTION OF WELL WALL AGAINST WHICH SAID TUBULAR MEMBER IS STUCK, PUMPING FLUID DOWN SAID FLUID FLOW CONNECTION AND INTO SAID TUBULAR MEMBER AND OUT THE PERFORATIONS THEREIN TO BE DISCHARGED AT A PRESSURE ABOVE THE HYDROSTATIC PRESSURE OF SAID MUD COLUMN WITHIN THE WELL AT THAT POINT, INJECTING SAID FLUID INTO THE FORMATION UNTIL THE FLUID PRESSURE WITHIN THE FORMATION IS SUBSTANTIALLY AT LEAST EQUAL TO THE FLUID PRESSURE WITHIN THE BORHOLE AT THAT POINT, ADDING TO SAID FLUID BEING PUMPED DOWN THE TUBULAR MEMBER AND INTO THE FISH, PERFORATION BLOCKING ELEMENTS OF A SIZE AND CONFIGURATION AND SPECIFIC GRAVITY TO BECOME LODGED AGAINST THOSE PERFORATIONS THROUGH WHICH A DISPORPORTIONATELY LARGE AMOUNT OF SAID FLUID IS PASSING AND AT LEAST PARTLY BLOCKING SAID PERFORATIONS TO LIMIT THE FLOW THERETHROUGH AND DIVERT A MAJOR PORTION OF THE FLUID FLOW TO OTHER PERFORATIONS, AND SUBSEQUENTLY, MOVING SAID TUBULAR MEMBER AFTER THE FLUID BEING DISCHARGED FROM SAID PERFORATIONS HAS PUSHED IT AWAY FROM THE WELL WALL.