Patent ID: 6176314
Filing Date: 2001-01-23
Classification: C04B,C09K

Abstract:
A process for the preclusion of free-liquid in the cementing of a subterranean well which comprises cementing said subterranean well with a low density cement slurry composition which comprises (a) a hydraulic cement, (b) water and (c) a free-liquid inhibitor wherein said composition has a density in the range of from about 11.0 pounds per gallon of slurry to about 15.0 pounds per gallon of slurry, wherein said free-liquid inhibitor is hydroxy ethyl cellulose having a cps value, measured as hydroxy ethyl cellulose dissolved in aqueous sodium silicate solution, in the range of about 5000 to about 50,000 and wherein said free liquid inhibitor is present in an amount sufficient to preclude the development of free-liquid in the slurry.