Stability of a secondary-type recovery process

Patent · Mon Apr 20 23:00:00 EST 1970

OSTI ID:7215948

Jones, S C

To provide good mobility control and to protect the components of the micellar dispersion displacing fluid from ''leaching'' into the drive fluid (water), the front portion of the drive fluid contained a mobility reducing agent, an electrolyte, and a semipolar organic compound. Berea sandstone cores (20.2 percent porosity, 336 md permeability) were saturated with water from Henry lease in Illinois (18,000 ppM TDS), flooded with sweet black crude oil (7 cp at 72/sup 0/F) from the Henry lease, and waterflooded with Henry lease water. A recovery of 93.9 percent of original oil in place was obtained by a micellar dispersion followed by the mobility buffer. The micellar dispersion contained ammonium petroleum sulfonate, crude column overhead (a heavy naptha), isopropanol, p-nonyl phenol, water and sodium hydroxide. No. 530 Pusher, water from the Palestine water reservoir in Palestine, Illinois (450 ppM TDS), 50 ppM ammonium thiocyanate, n-butanol, and isopropyl alcohol (to facilitate the solubilization of the polymer) were in the mobility buffer.

• Assignee: Marathon Oil Co.
• Patent Number(s): US 3507331
• OSTI ID: 7215948
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALCOHOLS
BUTANOLS
COLLOIDS
CONTROL
DISPERSIONS
EMULSIONS
ENERGY SOURCES
ENHANCED RECOVERY
ESTERS
FLUID INJECTION
FOSSIL FUELS
FUELS
HYDROXY COMPOUNDS
MICELLAR SYSTEMS
MICROEMULSION FLOODING
MICROEMULSIONS
MISCIBLE-PHASE DISPLACEMENT
MOBILITY
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PETROLEUM
PETROLEUM SULFONATES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
STABILITY
SULFONATES
SULFONIC ACID ESTERS
WELLS