Process for controlling lost circulation
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1. A PROCESS FOR OVERCOMING LOST CIRCULATION DURING THE DRILLING OF A BOREHOLE WHICH COMPRISES PREPARING AN AQUEOUS SOLUTION OF GALACTOMANNAN AT THE EARTH'"'"''"'"'S SURFACE, ADDING A CROSS-LINKING AGENT TO SAID SOLUTION IN A CONCENTRATION SUFFICIENT TO FORM A VISCOUS GEL CAPABLE OF PLUGGING VUGS AND FISSURES, AND INJECTING THE RESULTANT PREFORMED GEL INTO SAID BOREHOLE UNDER SUFFICIENT PRESSURE TO PLUG VUGS AND FISSURES IN THE SURROUNDING STRATA WITHOUT FRACTURING SAID STRATA.
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1 Claim
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1. A PROCESS FOR OVERCOMING LOST CIRCULATION DURING THE DRILLING OF A BOREHOLE WHICH COMPRISES PREPARING AN AQUEOUS SOLUTION OF GALACTOMANNAN AT THE EARTH'"'"''"'"'S SURFACE, ADDING A CROSS-LINKING AGENT TO SAID SOLUTION IN A CONCENTRATION SUFFICIENT TO FORM A VISCOUS GEL CAPABLE OF PLUGGING VUGS AND FISSURES, AND INJECTING THE RESULTANT PREFORMED GEL INTO SAID BOREHOLE UNDER SUFFICIENT PRESSURE TO PLUG VUGS AND FISSURES IN THE SURROUNDING STRATA WITHOUT FRACTURING SAID STRATA.
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