abstract |
THIS INVENTION RELATES TO A METHOD OF TERMINATING THE UNDESIRABLE FLOW OF THE WATER FROM A HIGHLY PERMEABLE PORTION OF, OR A FRACTURE IN, A SUBTERRANEAN FORMATION INTO A WELLBORE, WHICH METHOD INVOLVES THE USE OF A HYDRAULIC CEMENT CONSISTING OF DISCRETE PARTICLES HAVING A PARTICLES SIZE NOT GREATER THAN ABOUT 30 MICRONS. THE CEMENT IS UTILIZED IN A SLURRY OF A HYDROCARBON LIQUID AND A SURFACTANT, THE SURFACTANT INCLUDING AN ALKYL AROMATIC SULFONIC ACID OF FORMULA |