Oil recovery method using unique salinity for oil recovery surfactant system

Patent · Tue May 05 04:00:00 EDT 1981

OSTI ID:5749622

Glinsmann, G R; Hedges, J H

A series of surfactant systems is prepared at varying electrolyte concentrations, each system being mixed with oil to be displaced or its equivalent and allowed to equilibrate to determine the salinity at which the microemulsion phase has approximately equal volumes of oil and water; thereafter additional series of such surfactant systems are prepared utilizing different cosurfactants; thereafter the resulting surfactant systems are used at their optimal salinity (I.E., the salinity at which approximately equal volumes of oil and water are taken up into the microemulsion phase) to recover oil from test cores and the resulting oil recovery plotted versus the salinity to give the unique salinity at which maximum oil recovery is obtained for the particular oil-surfactant combination.

• Assignee: Phillips Petroleum Co
• Patent Number(s): US 4265308
• OSTI ID: 5749622
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALKALI METAL COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
ELECTROLYTES
ENHANCED RECOVERY
ESTERS
FLUID INJECTION
HALIDES
HALOGEN COMPOUNDS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
OPTIMIZATION
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PETROLEUM SULFONATES
RECOVERY
SALINITY
SODIUM CHLORIDES
SODIUM COMPOUNDS
SULFONATES
SULFONIC ACID ESTERS
SURFACTANTS
WELLS