Compositions useful in plugging formations
Patent
·
OSTI ID:6919857
A method is described for treating oil- and water-bearing formations to stimulate the production of oil while simultaneously retarding the production of water. This is accomplished by treating the formation with a composition comprising a solution of an acid salt of a fatty amine containing, when necessary, a wetting agent to allow the solution to be pumped with ease into the formation. The compositions, which are generally dissolved in an organic solvent such as a hydrocarbon solvent to facilitate easy handling, are employed as preflush compositions to plug water-bearing passages while leaving oil-bearing passages open. Thereupon an acid solution is pumped into the formation to selectively acidize and stimulate the oil-bearing passages. The acid soap hydrates when it comes in contact with the water-bearing portion of the formation so as to form a precipitate which seals the water producing formation. (4 claims)
- Assignee:
- EDB-83-022040
- Patent Number(s):
- US 3923100
- OSTI ID:
- 6919857
- Country of Publication:
- United States
- Language:
- English
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