Well fracturing

Claim 1

A FLUID FOR HYDRAULIC FRACTURING OF SUBTERRANEAN FORMATIONS CONSISTING OF (1) A MINOR PROPORTION OF A FLUIDLOSS PREVENTING PREPARED BY ADMIXING WATER CONTAINING FROM 0 TO UP TO THE POINT OF SATURATION OF A WATER-SOLUBLE INORGANIC SALT DISSOLVED THEREIN WITH A HYDROCARBON OIL IN RELATIVE AMOUNTS SUFFICIENT TO FORM A WATER-IN-OIL EMULSION. A CARBOXYLIC ACID CONTAINING BETWEEN 8 AND 18 CARBON ATOMS PER MOLECULE, AT LEAST ABOUT 35 PERCENT BY WEIGHT THEREOF BEING FATTY ACIDS, AN HYDROXIDE OF A POLYVALENT METAL IN EXCESS OF THE STOICHIOMETRIC QUANTITY REQUIRED TO REACT WITH THE CARBOXYLIC GROUPS OF SAID ACID, SAID ACID AND HYDROXIDE BEING PRESENT IN SUFFICIENT AMOUNTS TO EFFECT EMULSIFICATION OF THE WATER AND HYDROCARBON OIL, AND A MONO-ALCOHOL CONTAINING BETWEEN 4 TO 12 CARBON ATOMS PER MOLECULE IN SUFFICIENT AMOUNT TO IMPART FLUIDIDTY TO SAID FLUID-LOSS PREVENTIVE AND (2) A MAJOR PROPORTION OF A CARRIER FRACTURING LIQUD SELECTED FROM THE CLASS CONSISTING OF LIQUID HYDROCARBONS HAVING A VISCOSITY OF BETWEEN 5 AND 500 CPS. AT 80*F.