Composition and process for enhanced oil recovery

Patent · Tue Apr 12 00:00:00 EDT 1988

OSTI ID:5039081

Karas, L J

A process for recovering crude oil from a subterranean formating having at least one injection means in fluid communication with at least one production means is described comprising: (a) injecting into the formation a liquid composition consisting essentially of at least one surfactant selected from surfactants having a formula RCH/sub 2/CH=C(R)CH/sub 2/O(CH/sub 2/CH/sub 2/O)/sub m/X, wherein R is C/sub 3/-C/sub 8/ alkyl, m is an integer from 1 to 10, and X is a sulfonate, sulfate, glyceryl sulfonate, or carboxylate anion neutralized by a sodium, potassium, or ammonium cation and an aqueous medium; (b) injecting a gas to urge the composition toward the production means, provided that the surfactant is present in an amount effective to reduce the mobility of the gas through the formation; and (c) recovering crude oil from the formation through the production means.

• Assignee: Atlantic Richfield Co., Los Angeles, CA
• Patent Number(s): US 4736795
• OSTI ID: 5039081
• Resource Relation: Patent File Date: Filed date 24 Mar 1987
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
DISPLACEMENT FLUIDS
CHEMICAL COMPOSITION
OIL WELLS
GAS INJECTION
WATERFLOODING
AMMONIUM COMPOUNDS
CARBOXYLATION
ENHANCED RECOVERY
PETROLEUM
PH VALUE
POTASSIUM COMPOUNDS
SODIUM COMPOUNDS
SULFATES
SULFONATES
SURFACTANTS
WELL STIMULATION
ALKALI METAL COMPOUNDS
CHEMICAL REACTIONS
ENERGY SOURCES
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
RECOVERY
STIMULATION
SULFUR COMPOUNDS
WELLS
020300* - Petroleum- Drilling & Production