El Dorado micellar-polymer demonstration project. Sixth annual report, September 1979-August 1980

Technical Report · Wed Apr 01 04:00:00 EST 1981

OSTI ID:6485717

The primary objectives of this project are to determine the economic feasibility of improved oil recovery using two micellar-polymer processes and to determine the associated benefits and problems of each process. The El Dorado Demonstration Project is designed to allow a side-by-side comparison of two distinct micellar-polymer processes in the same field so that the reservoir conditions for the two floods are as similar as possible. During this project year, polymer solutions have been injected into both patterns for the entire project year. Severe biodegradation of the north pattern polymer was controlled by the addition of alcohol to the injection fluids. Modifications to the south pattern polymer injection system were made in order to reduce downtime and maintenance problems and to improve mobility control. Fluid movement at the observation wells has been monitored closely. There have been no significant changes in compositions at any of the production wells. The polymer drive for the north pattern using polyacrylamide following the biopolymer has been developed. Change over to the new design will be made in the next project year. The phase behavior for both the north and the south pattern surfactant systems have been studied to gain insight into the behavior that may have occurred when the surfactant systems were injected into the reservoir. Pressures in monitoring wells at the 800-foot mean-sea-level datum were measured twice during the project year and routine core analyses were performed on cores from four north pattern wells.Flood-front location calculations were updated and computed oil bank arrival times were estimated using the flood-front and streamline tracking program. Numerical simulations with a finite difference chemical flood simulator were performed for the north pattern process to estimate oil breakthrough time.

• Research Organization: Cities Service Co., Wichita, KS (USA)
• DOE Contract Number: AC03-78ET13070
• OSTI ID: 6485717
• Report Number(s): DOE/ET/13070-63
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALCOHOLS
BRINES
BUTANOLS
CONTROL
DEMONSTRATION PROGRAMS
ENERGY SOURCES
ENHANCED RECOVERY
ESTERS
FLUID INJECTION
FOSSIL FUELS
FUELS
HYDROXY COMPOUNDS
KANSAS
MATHEMATICAL MODELS
MICELLAR SYSTEMS
MICROEMULSION FLOODING
MIDWEST REGION
MISCIBLE-PHASE DISPLACEMENT
MOBILITY
NORTH AMERICA
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROLEUM
PHASE STUDIES
POLYACRYLATES
POLYMERS
POLYVINYLS
PRESSURE MEASUREMENT
RECOVERY
STIMULATION
SURFACTANTS
USA
WELL STIMULATION
WELLS