Overbased nonionic plus high molecular weight sulfonate waterflood additive and process of using same
Patent
·
OSTI ID:6686232
An overbased waterflood additive consisting of a water-soluble nonionic surfactant (such as an ethoxylated alkanol) plus a water-insoluble high molecular weight hydrocarbon sulfonate having an equivalent weight of about 400 to about 600 plus an overbasing amount of a base component such as an alkali metal hydroxide, ammonium hydroxide, or an alkali metal carbonate is prepared and is injected into a petroliferous formation to improve a waterflood process. Sufficient overbasing base component is employed such that the ratio: weight of excess base component/weight of sulfonate is about 0.03 to about 5.0
- Assignee:
- Continental Oil Co.
- Patent Number(s):
- US T947003
- OSTI ID:
- 6686232
- Country of Publication:
- United States
- Language:
- English
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