Commercial scale demonstration: enhanced oil recovery by micellar-polymer flood. Seventh annual report, October 1983-September 1984

Technical Report · Wed May 01 04:00:00 EDT 1985

OSTI ID:5592866

Mueller, L M

Information in this report is presented under three Work Breakdown Structure (WBS) elements: WBS 2100 - fluid injection; WBS 2300 - performance monitoring; and WBS 2400 - economic monitoring. WBS No. 2100 - Fluid Injection: (1) Polymer injection was completed in the 2.5-acre pattern while injection continues at a concentration of 625 ppM in the 5.0-acre pattern. Polymer concentration at the 2.5-acre pattern was reduced from 100 ppM to 50 ppM and then, upon completion of polymer injection, from 50 ppM to fresh water. (2) Copper coils are used to reduce injection rates at the M-1 because the coils can reduce wellhead pressure and still minimize the shear degradation of the polymer. WBS No. 2300 - Performance Monitoring: (1) Presently, the 2.5- and 5.0-acre patterns are producing at oil cuts of 2.7% and 8.6%, respectively. (2) The annual transient test results for the six injectors and their six offset producers are reported. The results are compared to previous years' results and indicate little change in mobility and skin factor over the past year. (3) Subsequent to injection of tritiated water into ten injection wells, all producing wells have been analyzed regularly for the presence of tritiated water. A discussion of the directional flow trends determined from tritiated water analysis is reported. (4) Samples of produced fluid are analyzed regularly for water soluble sulfonate content (a micellar slug component). An analysis of samples taken in June, 1984, shows 81 2.5-acre wells (89%) and 39 5.0-acre wells (95%) with sulfonate levels above background levels. (5) The M-1 biocide was switched from Tretolite XC-215 to Tretolite SC-510 in November, 1983. WBS No. 2400 - Economic Monitoring: (1) An economic analysis of the M-1 Project indicates that the production, investment, and expense which occur after 1983 do not significantly affect project economics. 19 figs., 6 tabs.

• Research Organization: Marathon Oil Co., Findlay, OH (USA)
• DOE Contract Number: AC03-78ET13077
• OSTI ID: 5592866
• Report Number(s): DOE/ET/13077-105; ON: DE85000128
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
020700 -- Petroleum-- Economics
Industrial
& Business Aspects
ADDITIVES
CHALCOGENIDES
DATA
DEMONSTRATION PROGRAMS
ECONOMIC ANALYSIS
ECONOMICS
ENERGY SOURCES
ENHANCED RECOVERY
EXPERIMENTAL DATA
FIELD TESTS
FLUID INJECTION
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
INFORMATION
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
MONITORING
NUMERICAL DATA
OIL WELLS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
POLYMERS
PRODUCTION
RECOVERY
RESEARCH PROGRAMS
TESTING
TRACER TECHNIQUES
TRITIUM COMPOUNDS
TRITIUM OXIDES
WATER
WELL SPACING
WELLS