Fracturing formation and stimulation of wells
First Claim
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1. A METHOD FOR FRACTURING A SUBSURFACE EARTH FORMATION PENETRATED BY A WELL HAVING A CASING THEREIN WHICH COMPRISES INTRODUCING INTO SAID CASING A BODY OF FRACTURING LIQUID UN SUFFICIENT QUANTITY TO COVER AT LEAST A PORTION OF SAID FORMATION AND EXTEND IN SAID WELL A SUBSTANTIAL DISTANCE FROM THE EARTH'"'"''"'"'S SURFACE TO PROVIDE A SUBSTANTIAL GAS SPACE IN SAID WELL ABOVE SAID BODY, INTRODUCING A GASIFORM FLUID INTO SAID SPACE AND BUILDING UP IN SAID SPACE A PRESSURE SUFFICIENT TO CAUSE FRACTURING OF SAID FORMATION WITH ONLY SAID FRACTURING LIQUID WHEN SAID CASING AND SAID FORMATION ARE PERFORATED, AND THEN PERFORATING SAID CASING AND SAID FORMATION IN SAID FRACTURING LIQUID
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1 Claim
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1. A METHOD FOR FRACTURING A SUBSURFACE EARTH FORMATION PENETRATED BY A WELL HAVING A CASING THEREIN WHICH COMPRISES INTRODUCING INTO SAID CASING A BODY OF FRACTURING LIQUID UN SUFFICIENT QUANTITY TO COVER AT LEAST A PORTION OF SAID FORMATION AND EXTEND IN SAID WELL A SUBSTANTIAL DISTANCE FROM THE EARTH'"'"''"'"'S SURFACE TO PROVIDE A SUBSTANTIAL GAS SPACE IN SAID WELL ABOVE SAID BODY, INTRODUCING A GASIFORM FLUID INTO SAID SPACE AND BUILDING UP IN SAID SPACE A PRESSURE SUFFICIENT TO CAUSE FRACTURING OF SAID FORMATION WITH ONLY SAID FRACTURING LIQUID WHEN SAID CASING AND SAID FORMATION ARE PERFORATED, AND THEN PERFORATING SAID CASING AND SAID FORMATION IN SAID FRACTURING LIQUID
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Current AssigneeJohn W. Graham, Nils L. Muench
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Original AssigneeJohn W. Graham, Nils L. Muench
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InventorsGraham, John W., Muench, Nils L.
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Application NumberUS04/236,939Time in Patent Office833 DaysField of SearchUS Class Current166/297CPC Class CodesE21B 43/267 reinforcing fractures by pr...
