CO2 miscible flooding application and screening criteria

• Main Author: Yin, Mingfei
• Format: Dissertation
• Language: English
• Subjects: petroleum engineering
• ISBN: 9781321885026; 1321885024

Field experience has shown that CO2 miscible flooding is an effective method to improve oil recoveryCbut only with proper reservoir candidate selection and optimal project design. This paper discusses both CO2 miscible and immiscible flooding mechanisms and offers some guidelines for flooding operations. New developments in MMP determination are also introduced.
This research is based on a summary of field data from 134 CO2 projects in the U.S. Several numerical methods have been applied for data cleaning. After cleaning, data from 128 projects have been analyzed and correlated. Carbonate reservoirs and sandstone reservoirs are the two main reservoir types for CO2 flooding in the U.S. In order to develop customized screening criteria for each parameter, ranges for different reservoir types were analyzed respectively. In addition, the minimum miscibility pressure of CO2 flooding was collected from literature to provide a better operation scope.