High temperature stable fluids for wellbore treatment containing

Details High temperature stable fluids for wellbore treatment containing High temperature stable fluids for wellbore treatment containing

1983-06-07

1985-04-30

Guynn, Herbert B.

Compositions

Leather or fur treating

166312, 252 85A, 252 85M, E21B 3700, C09K 706

Patent

active

045143102

ABSTRACT:
There are provided wellbore treating fluids containing densifying salt dissolved in a solvent for this salt. This solvent contains at least about 50 percent by weight of a liquid non-aqueous solvent such as, e.g., N-methyl-2-pyrrolidone, such that the overall solvent has desirable properties with respect to the ability to dissolve salt, miscibility with water, melting point, boiling point, flash point and viscosity. Examples of such wellbore treating fluids include drilling, completion, packer and workover fluids.

REFERENCES:
patent: 2297660 (1942-09-01), Mazee
patent: 4046197 (1977-09-01), Gruesbeck et al.
patent: 4304677 (1981-12-01), Stauffer et al.
patent: 4308374 (1981-12-01), Vollbracht et al.
patent: 4330414 (1982-05-01), Hoover
patent: 4392964 (1983-07-01), House et al.

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