Low fluid loss heavy brines containing hydroxyethyl cellulose

Details Low fluid loss heavy brines containing hydroxyethyl cellulose Low fluid loss heavy brines containing hydroxyethyl cellulose

1989-04-10

1991-04-23

Suchfield, George A.

Compositions

Leather or fur treating

2523635, E21B 4300

Patent

active

050097989

ABSTRACT:
Disclosed are heavy brine compositions containing zinc bromide and one or more soluble salts selected from the group consisting of calcium chloride and calcium bromide, preferably having a density in the range from about 14.2 to about 16.0 pounds per gallon, which have a low API fluid loss. Also disclosed is a method of formulating certain heavy brines in which hydroxyethyl cellulose functions as a fluid loss additive.

REFERENCES:
patent: 3675717 (1972-07-01), Goins et al.
patent: 4046197 (1977-09-01), Gruesbeck et al.
patent: 4304677 (1981-12-01), Stauffer et al.
patent: 4330414 (1982-05-01), Hoover
patent: 4350601 (1982-09-01), Mosier et al.
patent: 4392964 (1983-07-01), House et al.
patent: 4415463 (1983-11-01), Mosier et al.
patent: 4420406 (1983-12-01), House et al.

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