Partially crosslinked polymer used in correcting subterranean formation permeability
Patent
·
OSTI ID:6543026
A method is provided for obtaining a good residual resistance factor at relatively low ratios of crosslinking agents to polymer for plugging fractured or porous media using a method of injecting into the formation a first aqueous polymer solution followed by an injection of crosslinking agents capable of gelling the polymer solution and thereafter injecting a second aqueous polymer solution that is capable of being gelled by the crosslinking agents. In each of the aqueous polymer solutions the polymer is already partially crosslinked before the polymer solution is injected into the formation. This process is applicable to production wells and injection wells. (9 claims)
- Assignee:
- Phillips Petroleum Co
- Patent Number(s):
- US 3981363
- OSTI ID:
- 6543026
- Country of Publication:
- United States
- Language:
- English
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