Subterranean formation permeability correction
Patent
·
OSTI ID:6555630
A method is described for reducing the quantity of water recovered from a subterranean formation which is penetrated by at least one well bore. The formation's permeability to water is corrected, yielding prolonged mobility control and/or plugging, achieved through injecting aqueous polymer solutions interspaced with ionic solutions of polymer-complexing cations and brine. The method provides a prolonged high residual resistance factor through the application of multiple slugs of thickened aqueous polymer solutions interspaced with brine and polymer-complexing ionic solutions. The resulting residual resistance factor achieved by the method is greater than that produced by single thickening agent solution treatments or combinations thereof without the interspaced polymer-complexing ionic solution. (8 claims)
- Assignee:
- Phillips Petroleum Co.
- Patent Number(s):
- US 3762476
- OSTI ID:
- 6555630
- Country of Publication:
- United States
- Language:
- English
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