E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
31/12
E21B 33/16 (2006.01) C09K 8/42 (2006.01)
Patent
CA 1062448
Abstract of the Disclosure A spacer fluid emulsion comprising approximately equal volume parts of a hydrocarbon oil and fresh water, and con- taining from about 15 pounds per barrel to about 40 pounds per barrel of an emulsifier, about 0.5 pounds per barrel to about 10 pounds per barrel of a strong surfactant-dispersant, and a weighting material in an amount effective to impart a density to the spacer fluid of from about 8 pounds per gallon to about 20 pounds per gallon. The emulsifier used comprises an oleyl amide, preferably in admixture with oleic acid and dimerized oleic acid, adsorbed on a solid carrier selected from the group consisting of lime, as herein defined, and diatomaceous earth. The surfactant-dispersant preferably comprises a mixture of about equal weight parts of waste sulfite liquor, and the reaction product derived from the reaction of oleyl chloride and n-methyltaurine. The invention is further directed to methods of using such spacer fluids between cement and drilling fluids during well completions.
209321
Company Halliburton
Na
LandOfFree
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