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Organically crosslinked polyvinyl alcohol copolymetric gels for use under harsh reservoir conditions

Patent ·
OSTI ID:6573174
;
This patent describes a process for recovering oil from a subterranean oil-bearing formation having relatively high permeability zones and relatively low permeability zones penetrated by at least one production well in fluid communication with a substantial portion of the formation. It comprises: injecting into the formation an aqueous gel-forming composition comprising water, a water-dispersible polyvinyl alcohol copolymer, the polyvinyl alcohol copolymer selected from the group consisting of copolymers of vinyl alcohol and vinyl alkyl sulfonate either.
Assignee:
Mobil Oil Corp., New York, NY (USA)
Patent Number(s):
A; US 4940090
Application Number:
PPN: US s 7-350499
OSTI ID:
6573174
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
AQUEOUS SOLUTIONS
CHEMICAL COMPOSITION
COLLOIDS
DISPERSIONS
DISPLACEMENT FLUIDS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
GELS
MIXTURES
OIL WELLS
PETROLEUM
RECOVERY
SOLUTIONS
STIMULATION
WATERFLOODING
WELL STIMULATION
WELLS