Waterflooding method using overbased sulfonate
Patent
·
OSTI ID:7356298
An overbased anionic waterflooded additive comprising a water-soluble low molecular weight alkali metal hydrocarbon sulfonate having an equivalent weight of about 200 to about 400 plus a water-insoluble high molecular weight alkali metal hydrocarbon sulfonate having an equivalent weight of about 400 to about 600 plus an overbasing amount of base component such as an alkali metal hydroxide is prepared and is injected into a petroliferous formation to improve a water-flooded process. Sufficient overbasing base component is employed that the ratio ''weight of excess base component/weight of sulfonate'' is about 0.03 to about 2.0. (auth)
- Assignee:
- Continental Oil Co.
- Patent Number(s):
- US 3874454
- OSTI ID:
- 7356298
- Country of Publication:
- United States
- Language:
- English
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