Oil well drilling clay conditioners and method of their preparat

Details Oil well drilling clay conditioners and method of their preparat Oil well drilling clay conditioners and method of their preparat

1981-06-26

1984-05-08

Padgett, Benjamin R.

Compositions

Leather or fur treating

252 85C, 252 85B, 260124R, C09K 702

Patent

active

044473397

ABSTRACT:
Drilling fluid additives are prepared by oxidation of sulfonated lignin-containing materials with manganese dioxide under highly acidic conditions to make manganese lignosulfonates. Additional improvements in the rheological properties of the additives may be obtained by complexing the manganese lignosulfonate so obtained with a heavy metal cation (preferably iron or copper), by, for example, addition of ferrous sulfate or ferric sulfate to the manganese lignosulfonate. These products show the requisite combination of rheological properties for a satisfactory drilling fluid additive or conditioner.

REFERENCES:
patent: 2393166 (1946-01-01), Hoeppel
patent: 2529760 (1950-11-01), Bergman
patent: 2935473 (1960-05-01), King et al.
patent: 3138555 (1964-06-01), King et al.
patent: 3168511 (1965-02-01), King et al.
patent: 3244623 (1966-04-01), King et al.
patent: 3271382 (1966-09-01), Quimby et al.
patent: 3448096 (1969-06-01), Read
patent: 3957703 (1976-05-01), Ludwig et al.
patent: 3985667 (1976-10-01), Gray et al.

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