Fluid loss additive for well drilling fluids

Details Fluid loss additive for well drilling fluids Fluid loss additive for well drilling fluids

C - Chemistry, Metallurgy

09

K

260/1, 31/16

C09K 8/035 (2006.01) C09K 8/36 (2006.01) C07G 1/00 (2006.01)

Patent

CA 1287622

ABSTRACT OF THE DISCLOSURE An additive for drilling fluids employed in the deep well drilling industry, which additive comprises an organometal com- pound of titanium, zirconium or vanadium with humic acid and a further organic moiety which is at least one of fatty acid alkoxy- lates, fatty alcohol polyalkylene glycol ethers, long-chain amine alkoxylates optionally substituted with a hydroxyl group, or water-insoluble polyalkoxylates all of which are optionally mixed with fatty acids, and fatty acids alone, these having optionally been applied onto an inorganic carrier, man- datorily in the case of fatty acids alone. The fluid loss addi- tive prevents the drilling fluid from streaming into porous drill formations. The additive may be prepared by the reaction of a metal alcoholate with a compound providing the organic moiety and humic acid or a humic acid-containing product.

566301

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