Oil recovery process with cosurfactant influencing the thermostability of micellar dispersions

Patent · Mon Oct 26 23:00:00 EST 1970

OSTI ID:7301228

Jones, S C

The thermostability of a micellar dispersion was shifted to higher temperature ranges by increasing the molecular weight of the cosurfactant in the dispersion. The cosurfactant should have limited water solubility, and a decreased amount of branching for the higher temperature ranges. Lower equivalent weight surfactants are also preferred for the higher ranges. A micellar dispersion composed of ammonium petroleum sulfonate (MW 420), crude oil, brine (2,000 ppm TDS), and n-hexanol was stable to an upper temperature limit of 208/sup 0/F.

• Assignee: Marathon Oil Co.
• Patent Number(s): US 3536136
• OSTI ID: 7301228
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
COLLOIDS
DISPERSIONS
EMULSIONS
ENERGY SOURCES
ENHANCED RECOVERY
ESTERS
FLUID INJECTION
FOSSIL FUELS
FUELS
MICROEMULSION FLOODING
MICROEMULSIONS
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PETROLEUM
PETROLEUM SULFONATES
STABILITY
SULFONATES
SULFONIC ACID ESTERS
SURFACTANTS
WELLS