Fluid loss-reducing additives for oil-based well working fluids

Compositions – Leather or fur treating

Patent

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Details

252 8511, C09K 706

Patent

active

049419838

ABSTRACT:
A fluid loss additive for oil-based well-working fluids, the fluid loss additive comprising

REFERENCES:
patent: 2994660 (1961-08-01), Reddie et al.
patent: 3168475 (1965-02-01), Jordan et al.
patent: 3281458 (1966-10-01), Jordan et al.
patent: 3671427 (1972-06-01), Andrews et al.
patent: 4501672 (1985-02-01), Connell et al.

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