Method and material for increasing viscosity and controlling of

Details Method and material for increasing viscosity and controlling of Method and material for increasing viscosity and controlling of

1982-05-23

1986-10-28

Guynn, Herbert B.

Compositions

Leather or fur treating

252 851, 252 8512, C09K 702

Patent

active

046197729

ABSTRACT:
A well drilling fluid additive for viscosifying and controlling filtration or water loss from the fluid matrix is comprised of ground durum derived from the outer portion of the endosperm of the durum kernel. This product is very high in protein and polysaccharides, in addition to starch, which not only results in excellent viscosity and filtration control characteristics, but also in ability to maintain such characteristics in high temperature and pressure environments. It is equally effective in mineral-contaminated water, salt water, and fresh water, and it eliminates the necessity of flocculating or expanding clays in drilling fluid matrices for most normal oil well drilling applications. In normal use, this additive is mixed with the drilling fluid at a cool temperature in order to achieve maximum uniform dispersion. It is then circulated into the well where subsurface formation temperatures heat the fluid to at least 175.degree. to 180.degree. F., whereupon it "yields" or thickens into a very viscous fluid.

REFERENCES:
patent: 2209591 (1940-07-01), Barnes
patent: 2417307 (1947-03-01), Larsen
patent: 2600404 (1952-06-01), Hoeppel
patent: 2908597 (1959-10-01), Owen
patent: 3872018 (1975-03-01), Alexander
Rogers, Composition and Properties of Oil Well Drilling Fluids, Revised Ed., Pub. 1953, pp. 406-410.

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