Compositions – Leather or fur treating
Patent
1983-06-13
1985-03-26
Morris, Theodore
Compositions
Leather or fur treating
106900, C09K 700
Patent
active
045072108
ABSTRACT:
Disclosed is a process of formulating an aqueous medium to minimize the swelling and dispersion of subterranean formations contacted by the aqueous medium, particularly the aqueous phase of a water base drilling fluid. The process comprises: measuring a filtration property of a series of aqueous slurries containing particles of the subterranean formation and various concentrations of a water soluble compound which inhibits the swelling or dispersion of shales to determine the concentration range of the compound which maximizes the filtration rate; measuring a filtration property or the zeta potential of a series of aqueous slurries having a varying pH in the range from about 8 to about 13 to determine the pH range which either maximizes the filtration rate or provides a zeta potential in the range of about -10 millivolts to about +20 millivolts, respectively; and utilizing the concentration range of the compound and the pH range to formulate the aqueous medium.
REFERENCES:
patent: 3843524 (1974-10-01), Perricone
patent: 3989630 (1976-11-01), Walker
patent: 4240915 (1980-12-01), Block
patent: 4425165 (1984-01-01), Bryhn et al.
patent: 4425241 (1984-01-01), Swanson
patent: 4442241 (1984-04-01), Drake et al.
Chem. Abst. 66:108,537 g; Hall, E. S., Electrokinetic study of _Dispersions of Clay in Hydrolyzed Aluminum Solution, 1966.
Chem. Abst. 55:16974d; Oaks, Solids Concentration Effects In _Bentonite Drilling Fluids, 1961.
House Roy F.
Morris Theodore
Venture Innovations, Inc.
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