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U.S. Department of Energy
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El Dorado Micellar-Polymer Demonstration Project third annual report, June 1976--August 1977

Technical Report ·
DOI:https://doi.org/10.2172/5203918· OSTI ID:5203918
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 nearly alike as possible. Selection of sulfonates and polymers for both patterns was completed. Salinity changes in produced fluids and in observation well samples have shown that breakthrough of preflush (or preflood) has occurred at some wells in both patterns. Observation well sampling and logging data showed that preflush arrived earlier at the observation wells in the north pattern than the south pattern. Injectivities of the micellar system designed for the south pattern and components of that system were tested in three monitoring wells. Similarly, extensive injectivity testing of the surfactant and polymer slugs designed for the north pattern was conducted using two monitoring wells. Recommended preflush volumes for the south pattern were revised to reflect corrections in reservoir data (primarily due to the lack of the upper zone at well MP-213). Reservoir pressure forecasts of the superposition-of-line-sources simulator were compared with observed monitoring well pressures. Injection of the chemical preflush for the south pattern began on June 20, 1976. The micellar fluid injection began in the south pattern on March 22, 1977. (LK)
Research Organization:
Cities Service Oil Co., Tulsa, OK (USA)
OSTI ID:
5203918
Report Number(s):
BERC/TPR-7712
Country of Publication:
United States
Language:
English