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Mixed metal layered hydroxide-clay adducts as thickeners for water and other hydrophylic fluids
Mixed metal layered hydroxide-clay adducts as thickeners for water and other hydrophylic fluids
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机译:混合金属层状氢氧化物-粘土加合物,可作为水和其他亲水性液体的增稠剂
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摘要
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 LimDdT(OH)(m+2d+3+na)Aan, 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.
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