Process for recovering hydrocarbons using overbased linear alkylate sulfonates as waterflood additives
An improved anionic waterflood additive is prepared by chlorinating a normal alkane having about 10 to about 18 carbon atoms to about 15 to about 45 weight percent chlorine content; employing the chlorinated alkane to alkylate an aromatic hydrocarbon such as benzene; sulfonating the thus formed alkylate to form a sulfonic acid; converting the sulfonic acid to a sulfonate by reacting with a base component such as an alkali metal hydroxide, ammonium hydroxide, or an akali metal carbonate; and overbasing the sulfonate by admixing with an excess of base component such that the ratio: ''weight of excess base component/weight of sulfonate'' is about 0.03 to about 2.0. The anionic waterflood additive is injected into a petroliferous formation, the formation is waterflooded, and oil is recovered. (auth)
- Assignee:
- Continental Oil Co.
- Patent Number(s):
- US 3878894
- OSTI ID:
- 7365840
- Resource Relation:
- Patent File Date: Filed date 5 Sep 1974
- Country of Publication:
- United States
- Language:
- English
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