High density aqueous well fluids

Abstract This invention provides zinc-free aqueous brine compositions. These zinc-free ) aqueous brine compositions have a density of about 14.3 pounds per gallon or more, and a true crystallization temperature of about 20°F or less, and comprise water and one or more inorganic bromide salts, with t...

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Hauptverfasser: LOUWEN, Jocobus N, LAMBETH, Gregory H, LIU, Yunqi, GODAVARTHY, Srinivasa S, NALEPA, Christopher J, COPPOLA, Kevin
Format: Patent
Sprache:eng
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Zusammenfassung:Abstract This invention provides zinc-free aqueous brine compositions. These zinc-free ) aqueous brine compositions have a density of about 14.3 pounds per gallon or more, and a true crystallization temperature of about 20°F or less, and comprise water and one or more inorganic bromide salts, with the provisos that when calcium bromide is present, one or more other water-soluble inorganic salts are also present, when lithium bromide is present, calcium bromide is absent, when bismuth(III) bromide is present, one or more other water-soluble inorganic salts are also present, and for a true crystallization temperature of about 10°F or less, when manganese(II) bromide is present, one or more other water-soluble inorganic salts are also present. Processes for forming these zinc-free aqueous brine compositions are also provided.