Wells – Processes – Chemical inter-reaction of two or more introduced materials
Patent
1986-12-08
1988-04-26
Suchfield, George A.
Wells
Processes
Chemical inter-reaction of two or more introduced materials
166307, 252 8553, E21B 4327
Patent
active
047398337
ABSTRACT:
Subterranean formations at temperatures above 250.degree. F. are acidized by introducing a solution of a halogenated hydrocarbon and an organic solvent and allowing the halogenated hydrocarbon to hydrolyze in an aqueous medium to form a hydrohalic acid. Corrosion of metals, e.g., well casing, is inhibited by the presence of the solvent. The acidizing solution can be introduced as a liquid or as a mist in a substantially anhydrous gas. The aqueous medium can be naturally present in the formation or can be introduced into the formation as a liquid or as a foam simultaneously with the acidizing solution.
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Watanabe David J.
Watkins David R.
Lambert Howard R.
Sandford Dean
Suchfield George A.
Union Oil Company of California
Wirzbicki Gregory F.
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