Biopolymer/oil suspension compositions utilized in aqueous-based

Details Biopolymer/oil suspension compositions utilized in aqueous-based Biopolymer/oil suspension compositions utilized in aqueous-based

1996-04-05

1998-01-20

Tucker, Philip

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

507111, 507112, 507113, 507114, 507115, 507116, 507119, 507120, 507129, 507138, 507209, 507210, 507211, 507212, 507213, 507214, 507215, 507216, 507217, 507218, 507224, 507225, 507265, 507925, C09K 702

Patent

active

057101086

ABSTRACT:
The invention involves biopolymer/oil suspension compositions for the oil service industry, most particularly drilling and completion fluids, which provide such fluids a variety of desirable properties. Biopolymers include water soluble polymers and water swellable polymers. Such biopolymer/oil suspension compositions are essentially mixtures of biopolymers such as cellulosics in an oil medium with a specific anti-settling additive. The invention is particularly directed to providing enhanced anti-settling properties to such biopolymer/oil compositions; that is, the ability of the biopolymer/oil composition to retain the biopolymers in suspension prior to the composition being introduced into drilling and completion fluids. The invention in one embodiment is described as a liquid biopolymer-in-oil additive compositions for use in aqueous-based completion fluids, containing an agent comprising: a) one or more polyamides, and b) hydrogenated caster oils including castorwax.

REFERENCES:
patent: 3937678 (1976-02-01), Yasuda et al.
patent: 4128436 (1978-12-01), OHara et al.
patent: 4502963 (1985-03-01), Harmon
patent: 4659486 (1987-04-01), Harmon
patent: 5340390 (1994-08-01), Magauran et al.

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