Process and fluids for the treatment of oil wells
AssigneeBromine Compounds Ltd.
InventorsNahum Phillip Finkelstein, Stephen Harry Garnett, Samuel Wajc, John Metcalfe
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Abstract
A process for the treatment of oil wells having a high content of "acid gases", comprises circulating through or pumping into the well a slurry comprising a water-soluble, solid salt and a saline solution, which slurry does not react with the "acid gases" and which has a density of more than 13 and preferably of at least 14 lb/gal.
Claims12
A process for the treatment of oil wells containing H.sub.2 S and/or CO.sub.2, which comprises circulating through or pumping into the well a slurry comprising:
- a) one or more of a water-soluble, solid alkali metal halide salt wherein the halide is independently selected from the group consisting of chloride, bromide and iodide, and the alkali metal is independently selected from the group consisting of Na, K, and Li;
- b) an aqueous solution of one or more of the aforesaid salts;
- and c) viscosifier;
- which slurry has a density of at least 14 lb/gal;
- with the proviso that the slurry is not a mixture of solid NaCl and a solution of NaCl.
Slurry for the treatment of oil wells, comprising a) a water-soluble, solid salt which is an alkali metal halide, wherein the halide is selected from the group consisting of chloride, bromide and iodide, and the alkali metal is selected from the group consisting of Na, K and Li;, b) an aqueous solution of one or more of aforesaid salts, and c) a viscosifier;
- with the proviso that if said solid salt is NaCl, then the aqueous solution is not a solution in which the salt of the highest concentration is NaCl.
Dependencies are inferred from the claim text.