Micellar flooding process for heterogeneous reservoirs

Patent · Tue Feb 20 04:00:00 EST 1979

OSTI ID:5807829

W, Holm L

A process for recovering oil from a heterogeneous subterranean reservoir having strata of widely varying permeability by injecting therein via a well a slug of a micellar solution followed by an aqueous drive fluid wherein, at some time prior to the injection to all of the slug of the micellar solution, there is injected into the reservoir one or more aqueous solutions of reagents that react in the reservoir to form a plugging material, one of which reagents contains a polyvalent cation. After the plugging material has formed, the well is produced to remove from the reservoir the unreacted reagent containing a polyvalent cation which polyvalent cation would otherwise react with and reduce the efficiency of the subsequently injected micellar solution. 25 claims.

• Assignee: Union Oil Company of California
• Patent Number(s): US 4140183
• OSTI ID: 5807829
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
AQUEOUS SOLUTIONS
CATIONS
CHARGED PARTICLES
DISPERSIONS
EFFICIENCY
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
IONS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
OIL WELLS
PETROLEUM
PLUGGING
RESERVOIR ROCK
ROCKS
SOLUTIONS
WELLS