Applications of advanced petroleum production technology and water alternating gas injection for enhanced oil recovery: Mattoon Oil Field, Illinois. (Quarterly report), January--March 1994

摘要

The objectives of this project are to continue reservoir characterization of the Cypress Sandstone; to identify and map facies-defined waterflood units (FDWS); and to design and implement water-alternating-gas (WAG) oil recovery utilizing carbon dioxide (CO(sub 2)). The producibility problems are permeability variation and poor sweep efficiency. Phase 1 of the project focuses on the development of computer-generated geological and reservoir simulation models that will be used to select sites for the demonstration and implementation of CO(sub 2) displacement programs in Phase 2. Included in Phase 1 is the site selection and drilling of an infill well, coring of the Cypress internal and injectivity testing to gather information used to update the reservoir simulation model. Phase 2 involves field implementation of WAG. Technology Transfer includes outreach activity such as seminars, workshops, and field trips. Accomplishments for the past quarter are described.