Method and composition for sealing earth formation

Claim 1

THE METHOD OF SELECTIVELY SEALING WATER BEARING EARTH FORMATIONS ADJACENT HYDROCARBON BEARING FORMATIONS IN OIL WELLS OR THE LIKE, CONSISTING IN INTIMATELY MIXING PORTLAND CEMENT, IN A PROPORTION OF ABOUT 400 GALLONS OF OIL TO 100 SACKS OF CEMENT, AN OIL CONTAINING VERY LITTLE WATER, AND A SURFACE ACTIVE AGENT WHICH IS MISCIBLE WITH HYDROCARBONS IN A PROPORTION OF ABOUT 6 GALLONS OF AGENT TO 100 SACKS OF CEMENT, TO MAKE A NON-AQUEOUS PUMPABLE SLURRY OF A VISCOSITY OF 15 TO 20 POISES, CIRCULATING THE SLURRY SO FORMED INTO A BORE HOLE IN THE EARTH FORMATIONS UNTIL IT IS ADJACENT BOTH A HYDROCARBON BEARING FORMATION AND ADJACENT WATER BEARING FORMATION, STOPPING THE CIRCULATION AND HESITATING A SHORT PERIOD OF TIME TO ALLOW WATER FROM THE WATER BEARING FORMATION TO COME IN CONTACT WITH THE PORTION OF THE SLURRY ADJACENT THE WATER BEARING FORMATION, THEN EXERTING HIGH PRESSURE ON THE SLURRY TO SQUEEZE THE SAME INTO BOTH THE HYDROCARBON BEARING FORMATION AND THE WATER BEARING FORMATION AND HOLDING THE SLURRY IN THAT POSITION UNTIL THE SLURRY IN THE WATER BEARING FORMATION SETS INTO A HARD DENSE MASS.