Method of acidizing wells

Claim 1

IN THE ACIDIZING OF WELLS, THE METHOD OF PROVIDING A THIN DISC-SHAPED WELL-FLUID COLLECTION ZONE AND FLOW CHANNEL EXTENDING RADIALLY FROM A WELL BOREHOLE INTO AN OIL-PRODUCING FORMATION BY FOCUSING A QUANTITY OF ACID INTO AN OIL-PRODUCING FORMATION, SAID METHOD COMPRISING PACKING OFF THE SECTION OF A WELL ABOVE AND BELOW THE PORTION OF OIL-PRODUCING FORMATION TRAVESED BY THE WELL TO BE ACIDIZED, INJECTING A FIRST QUANTITY OF A FORMATIONTREATING ACID THROUGH SAID WELL AND RAIDIALLY INTO THE PORTION OF FORMATION TO AT LEAST ONE SIDE AXIALLY OF SAID PACKED-OFF SECTION OF WELL, INJECTING A SECOND QUANTITY OF A FORMATION-TREATING ACID FLUID UNDER PRESSURE THROUGH SAID WELL AND RADIALLY INTO THE PORTION OF THE OIL-PRODUCING FORMATION RADIALLY ADJACENT THE PACKED-OFF SECTION OF THE WELL TO ACIDIZE SAID FORMATION, SIMULTANEOUSLY INJECTING WITH SAID SECOND QUANTITY OF ACID FLUID AN OLEOPHILIC FLUID THROUGH SAID WELL AND RADIALLY INTO THE FORMATION PREVIOUSLY TREATED BY SAID FIRST QUANTITY OF FORMATIONTREATING ACID AND INTO THE FORMATION TO THE OTHER SIDE OF SAID PORTION OF OIL-PRODUCING FORMATION BEING ACIDIZED SAID INJECTION BEING CARRIED OUT AT PRESSURES SUFFICIENT TO MAINTAIN THE RADIAL FLOWS OF SAID FLUIDS INTO THE FORMATION AT SUBSTANTIALLY EQUAL VELOCITIES, AND REOPENING THE OILBEARING FORMATION TO PRODUCTION.