Phenolic and naphtholic ester crosslinked polymeric gels for permeability profile control

Patent · Tue May 22 00:00:00 EDT 1990

OSTI ID:6744671

Hoskin, D H

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 lest one injection well and at least one production well. It comprises: injecting into the relatively high permeability zones of the formation an aqueous gel-forming solution comprising water, a vicosifying amount of a water-dispersible polymer; and a crosslinking agent in an amount effective to cause gelation of the aqueous solution of the water dispersible polymer. The crosslinking gent comprising a mixture of an aldehyde and a member selected from the group consisting of phenolic esters, naphtholic esters, halogenated phenolic esters and halogenated naphtholic esters, whereby upon gelation of the solution the zones of relatively high permeability of the formation are selectively plugged; injecting a flooding fluid into the formation via the injection well; and recovering fluids including oil from the formation via the production well.

• Assignee: Mobil Oil Corp., New York, NY (USA)
• Patent Number(s): A; US 4926943
• Application Number: PPN: US 7-322337A
• OSTI ID: 6744671
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
AROMATICS
CHEMICAL COMPOSITION
COAL TAR OILS
COLLOIDS
DISPERSIONS
DISTILLATES
ENERGY SOURCES
ESTERS
FOSSIL FUELS
FUELS
GELS
HYDROXY COMPOUNDS
NAPHTHA
OIL WELLS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PHENOLS
PLUGGING
PLUGGING AGENTS
POLYMERS
WELL COMPLETION
WELLS