Completion and workover fluids
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United States of America Patent
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Apr 28, 1987
Grant Date -
N/A
app pub date -
Jul 16, 1985
filing date -
Jul 16, 1984
priority date (Note) -
Expired
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Abstract
A completion and workover fluid which comprises an aqueous liquid medium containing hydroxyethyl cellulose, an inorganic salt selected from the group consisting of calcium chloride, calcium bromide and zinc bromide, and a component selected from the group consisting of the following components: (1) thiol derivatives of heterocyclic compounds; (2) thioamide derivatives; (3) at least one compound selected from the group consisting of thiuram disulfide compounds, thiuram monosulfide compounds and dithiocarbamate compounds; (4) benzothiazole; and (5) a copper compound and an iodine compound in combination.
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