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Forbehandlede leirer, deres fremstilling og anvendelse i fremstilling av boreslam som ikke er aggresive mot lagleirer
Forbehandlede leirer, deres fremstilling og anvendelse i fremstilling av boreslam som ikke er aggresive mot lagleirer
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机译:预处理黏土,其制备方法和在钻井泥浆生产中的用途,这些黏土对层状黏土没有侵蚀性
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PCT No. PCT/EP93/02586 Sec. 371 Date Mar. 13, 1995 Sec. 102(e) Date Mar. 13, 1995 PCT Filed Sep. 23, 1993 PCT Pub. No. WO94/06881 PCT Pub. Date Mar. 31, 1994Disclosed is a process for preparing aqueous, clay-based muds, not aggressive to layer clays, which process comprises a first step in which clay is treated with an aqueous solution containing the necessary amount of dispersant to fluidify the mud; a second step, of separation of so treated clay from the aqueous solution containing any not adsorbed dispersant, and finally, a step of re-dispersion of so treated clay in water, in order to formulate the mud.
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