Method of retarding reaction of acid on limestone
Patent
·
OSTI ID:6160420
The reaction of acid on calcareous formations can be retarded by pretreating the formations with an oily solution containing an oil film-forming agent. The compounds most effective as oil film-forming agents are any oil-soluble or partially oil-soluble wetting agents including the film-forming downhole corrosion inhibitors generally use for preventing corrosion of well equipment. Typical of these materials are the primary and secondary amine salts of fatty acids and naphthenic acids. The oily film serves to substantially decrease the reaction rate of the acid with the calcareous formation during acidizing. (19 claims)
- Assignee:
- Haalliburton Co.
- Patent Number(s):
- US 3343602
- OSTI ID:
- 6160420
- Country of Publication:
- United States
- Language:
- English
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