Calcium-free clear high density fluids

Details Calcium-free clear high density fluids Calcium-free clear high density fluids

1988-07-28

1990-07-17

Maples, John S.

Compositions

Leather or fur treating

252 851, 252 8514, 252 8513, 252 8555, E21B 4300, C09K 704

Patent

active

049419820

ABSTRACT:
Clear high density fluids for use as completion, packing and perforation media in oil and gas well formations having high carbonate and/or high sulfate ion concentration are formulated from aqueous solutions of zinc bromide and one or more alkali metal bromides and have densities lying in the range of about 15.0 to 20.5 lb./gal and a pH lying in the range of about 1.0 to 5.5, with the alkali metal bromide being provided in an amount approaching its solubility limit in water.

REFERENCES:
patent: 4292183 (1981-09-01), Sanders
patent: 4415463 (1983-11-01), Mosier et al.
patent: 4420406 (1983-12-01), House et al.
patent: 4427556 (1984-01-01), House et al.
patent: 4554081 (1985-11-01), Borchardt et al.
patent: 4609476 (1986-09-01), Heilweil
patent: 4615740 (1986-10-01), Pelezo et al.
patent: 4619773 (1986-10-01), Heilweil et al.
patent: 4784779 (1988-11-01), Dadgar

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