Water flooding process using multiple fluids

Patent · Tue Sep 29 00:00:00 EDT 1981

OSTI ID:5865965

Barber, R M; Gilchrist, R E; Hover, G W

A process is disclosed for the recovery of oil from a subterranean formation. Which is preferably a residium from a prior recovery operation. The process includes injecting a first treatment fluid comprising an aqueous solution of polymer of 50 ppm to 5000 ppm polymer, for example a partially hydrolyzed polyacrylamide, in an amount of from 0.5 to 100% pore volume of the formation and thereafter injecting into said formation a second treatment fluid comprising a mixture of an aqueous solution of polymer and from 0.01 to 3.5 weight percent caustic, for example NaOH, in an amount of from 0.5 to 100% pore volume of the formation and recovering oil from the formation.

• Assignee: Mitchell Energy Corp
• Patent Number(s): US 4291765
• OSTI ID: 5865965
• Resource Relation: Patent File Date: Filed date 2 Aug 1979
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OIL WELLS
MICROEMULSION FLOODING
WATERFLOODING
AQUEOUS SOLUTIONS
ENHANCED RECOVERY
PETROLEUM RESIDUES
POLYACRYLATES
POLYAMIDES
SODIUM HYDROXIDES
WELL STIMULATION
ALKALI METAL COMPOUNDS
DISPERSIONS
ENERGY SOURCES
ESTERS
FLUID INJECTION
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROXIDES
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
POLYMERS
POLYVINYLS
RECOVERY
SODIUM COMPOUNDS
SOLUTIONS
STIMULATION
WELLS
020300* - Petroleum- Drilling & Production