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The use in the preparation of drilling mud of non-aggression preprocessing clay, clay formations to its preparation and
The use in the preparation of drilling mud of non-aggression preprocessing clay, clay formations to its preparation and
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机译:非侵略性预处理黏土在制备钻井泥浆中的用途,其地层的制备和
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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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