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

Patent · Tue Jul 10 00:00:00 EDT 1990

OSTI ID:6573174

Haskin, D H; Shu, P

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): US 4940090; A
• Application Number: PPN: US s 7-350499
• OSTI ID: 6573174
• Resource Relation: Patent File Date: 11 May 1989
• Country of Publication: United States
• Language: English

Related Subjects

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