
doi: 10.2118/123032-ms
Abstract The El Cordon Field is located in the prolific San Jorge Basin in Argentina. The El Cordon Field has produced from multiple fluvial volcano-clastic sandstones of Cretaceous age for more than 50 years. Production is primarily from the Cañadon Seco and Caleta Olivia members of the Cañadon Seco formation, and to a lesser degree from the Mina El Carmen formation. The field is characterized by a complex sedimentary environment and mineralogy which affects the quality of the reservoir and makes reservoir characterization and development of exploitation strategies difficult. The field is considered to be in a mature stage of development with over 630 wells under primary production and water injection projects on-going in selected areas of the field. A Visualization Process Approach was developed in 2007 to identify scenarios to improve recovery and add economic value to the field. After a quick-look reservoir characterization, five scenarios were evaluated for maximizing reserves recovery. Historical and statistical data was analyzed to evaluate various development scenarios and the associated reserves. The various cases evaluated included: 1) a base case; 2) reactivation of existing wells; 3) drilling of wells at normal spacing; 4) infill drilling; and 5) water injection. Application of all cases indicates a potential increase of the field recovery factor from 9.4% to 14.2%. A technical screening for polymer injection feasibility was also analyzed. A second "Conceptualization" phase would include a detailed reservoir characterization study to help reduce uncertainty and support the definition and implementation of the best scenario for further field exploitation.
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