Stable mud drilling fluid additive, composition and process for

Details Stable mud drilling fluid additive, composition and process for Stable mud drilling fluid additive, composition and process for

1987-09-14

1989-06-13

Guynn, Herbert B.

Compositions

Leather or fur treating

252 851, 524843, C09K 702

Patent

active

048390950

ABSTRACT:
A drilling fluid includes a water soluble polymer such as a sulfonated amino-formaldehyde and/or methyl cellulose or polyvinyl alcohol in addition to water, bentonite and a weighting agent such as barite. And, these drilling fluids have improved heat stability and are useful for drilling a borehole into a subterranean formation using conventional drilling equipment.

REFERENCES:
patent: 2679478 (1954-05-01), Fischer et al.
patent: 2730497 (1956-01-01), Suen et al.
patent: 3872018 (1975-03-01), Alexander
patent: 3956140 (1976-05-01), Nahm et al.
patent: 4045357 (1977-08-01), Reed
patent: 4322300 (1982-03-01), Holmquist
patent: 4473480 (1984-09-01), Green et al.
patent: 4631137 (1986-12-01), Dymond
patent: 4677159 (1987-06-01), Lahalih et al.

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