Drilling fluids and thinners therefor

Details Drilling fluids and thinners therefor Drilling fluids and thinners therefor

1984-07-30

1986-10-21

Guynn, Herbert B.

Compositions

Leather or fur treating

252 851, 252 8511, C09K 702

Patent

active

046184333

ABSTRACT:
In an aqueous drilling fluid, an improved thinning effect is obtained by adding a first agent comprising a sulfoalkylated tannin or heavy metal complex thereof, optionally in combination with a lignite, and a second agent comprising a metal compound containing tin, optionally in combination with a metal compound containing nickel or manganese, and wherein said metals can be present in the cation and/or anion portion of said metal compound.

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Fowkes et al., "Leonardite: A Lignite Byproduct", U.S. Bureau of Mines, Report of Investigations 5611, 1960.
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