Surfactant waterflooding with hydrocarbon slug
Patent
·
OSTI ID:5221097
A surfactant waterflooding process involving the injection of a hydrocarbon slug followed by a surfactant slug and a mobility control slug is described. The hydrocarbon slug has a viscosity less than that of the reservoir oil and is injected within the range of 0.01--0.04 pore volume. The surfactant slug is injected in an amount within the range of 0.05--0.3 pore volume and exhibits a surfactant concentration within the range of 0.5--4.0 weight percent. At least a portion of the mobility control slug has a viscosity at least as great as the viscosity of the hydrocarbon slug.
- Assignee:
- Mobil Oil Corp.
- Patent Number(s):
- US 4066126
- OSTI ID:
- 5221097
- Country of Publication:
- United States
- Language:
- English
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