Inverted mixed latex for water flooding
A process is described for recovering oil from a subterranean oil-bearing formation which comprises introducing a stable liquid dispersion of a water-soluble anionic vinyl addition polymer and a water-soluble cationic polymer into an input well which penetrates the formation, and forcing the stable liquid dispersion through the formation toward at least one producing well penetrating the formation at a distance from the input well. The stable liquid dispersion is characterized as capable of being inverted in water and the anionic vinyl addition polymer instantly reacts with the cationic polymer to produce a reaction product which may be described as a 3-dimensional water and hydrocarbon liquid insoluble gel-like structure. (7 claims)
- Assignee:
- Nalco Chemcial Co.
- Patent Number(s):
- US 3780806
- OSTI ID:
- 7019076
- Country of Publication:
- United States
- Language:
- English
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