Process for conformance control using a polymer flocculate
Patent
·
OSTI ID:5588541
An aqueous solution containing a water soluble polymer and a nonalkaline aqueous solution containing a polyvalent cation are sequentially injected into the relatively highly permeable zones of a subterranean formation. The solutions preferentially enter the relatively highly permeable zones and form a flocculate in situ when the polymer and cation contact and mix in the connate water. Sequential injection may be repeated several times until the permeability of the relatively highly permeable zones is substantially reduced thereby improving conformance in the subterranean formation.
- Assignee:
- Marathon Oil Co.
- Patent Number(s):
- US 4503912
- OSTI ID:
- 5588541
- Country of Publication:
- United States
- Language:
- English
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