Aqueous drilling muds fluidified by means of zirconium and...

Details Aqueous drilling muds fluidified by means of zirconium and... Aqueous drilling muds fluidified by means of zirconium and...

C - Chemistry, Metallurgy

09

K

C09K 8/14 (2006.01) E21B 21/00 (2006.01)

Patent

CA 2430308

Aqueous drilling muds are disclosed which contain, as fluidifier agent, one or more complexes, which may be either pre-formed or produced in situ, selected from: -- tetravalent zirconium and one or more organic acids, or their salts, having the general formula (I)~ (see fig I) wherein R1 and R2, which may be the same or different from each other, represent -H, -COOH, -CH3, -CH2COOH, -CH(OH)COOH; -- aluminum citrate.

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