Method for recovering oil from an underground formation
Patent
·
OSTI ID:6450226
Method for recovering oil from an underground formation consisting of blocks of relatively low permeability with an oilwet pore space containing oil surrounded by a fracture network of relatively high permeability by supplying to the fracture network an aqueous solution of a surfactant adapted for decreasing the surface tension between water and oil and displacing the oil from the oil-wet pore space of the blocks.
- Assignee:
- National Iranian Oil Co (Iran); Shell Internationale Res Maatschappij B V (Netherlands)
- Patent Number(s):
- US 4364431
- OSTI ID:
- 6450226
- Resource Relation:
- Patent File Date: Filed date 17 Dec 1980; Other Information: PAT-APPL-217445
- Country of Publication:
- United States
- Language:
- English
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