Mixed metal layered hydroxide-clay adducts as thickeners for wat

Details Mixed metal layered hydroxide-clay adducts as thickeners for wat Mixed metal layered hydroxide-clay adducts as thickeners for wat

1985-07-05

1987-05-12

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

252 2, 252 851, 252 8512, 252 28, 252 71, 25217425, 252184, 423328, B01J 1300, C01B 3328, C09K 700

Patent

active

046648437

ABSTRACT:
Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.m+2d+3+na) A.sub.a.sup.n, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.

REFERENCES:
patent: 3252757 (1966-05-01), Granquist
patent: 3391088 (1968-07-01), Plank et al.
patent: 3855147 (1974-12-01), Granquist
patent: 4318732 (1982-03-01), Sawyer, Jr.
patent: 4392979 (1983-07-01), Lee et al.
patent: 4446201 (1984-05-01), Lee et al.
patent: 4477367 (1984-10-01), Burba, III

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