Enhanced oil recovery methods and systems

Details Enhanced oil recovery methods and systems Enhanced oil recovery methods and systems

1981-07-14

1984-03-27

Wong, Jr., Harry

Compositions

Leather or fur treating

526240, 526288, 5263031, 526304, C09K 300

Patent

active

044393342

ABSTRACT:
Methods of preparing viscous aqueous polymer solutions having improved viscosity and stability properties for use in the treatment of subterranean hydrocarbon-containing formations and in enhanced oil recovery processes are provided. Methods and systems for enhancing the recovery of oil from subterranean oil-containing formations are also provided. The viscous aqueous polymer solutions of the invention are prepared by polymerizing one or more water soluble polymerizable vinyl monomers in a substantially oxygen-free aqueous solvent and then further diluting the resultant concentrated solution in additional solvent. Such viscous aqueous polymer solutions have improved viscosity properties and increased compatibility with oil well treating fluid additives, especially clay stabilizers.

REFERENCES:
patent: 3405106 (1968-10-01), Scanley
patent: 3509114 (1970-04-01), Ballast
patent: 4137969 (1982-02-01), Phalangas et al.
patent: 4297226 (1981-10-01), Hunter

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