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Petroleum Technology News

Second Publication 2001

Update on the CO2 Flood Project in Kansas

The U.S. Department of Energy (DOE)-sponsored carbon dioxide (CO2) miscible flood demonstration project near Russell, Kansas is in the early part of its second year. The objective of this Class II Revisited project is to demonstrate the viability of CO2 miscible flooding in the Lansing-Kansas City (L-KC) formation on the Central Kansas Uplift and to obtain data concerning reservoir properties, flood performance, and operating costs and methods to aid operators in future floods. These carbonate reservoirs have been depleted by effective waterflooding leaving significant trapped oil reserves that may be recovered using this technology. In this first phase of the project, the Kansas CO2 team has characterized the reservoir geologic and engineering properties and modeled the flood using reservoir computer simulation. Data for the demonstration site are accessible on the web at http://www.kgs.ku.edu /CO2/index.html. A clickable map with links for each well to wireline logs, drillers logs, wellbore schematics, core and cuttings images is available at the CO2 website under: http://www.kgs.ku.edu/CO2/welldata.html.

To obtain needed reservoir properties data and provide a new CO2-injection well, the Murfin Drilling Company, Inc. Carter-Colliver #1 CO2 I well, located in Section 28-14S-13W, Russell County, Kansas, was completed on October 2, 2000. Five cores were taken and analyzed. Well production rates, after acid stimulation, average approximately 120 barrels water/8 barrels oil per day, which are consistent with mod-eled reservoir properties for this waterflooded zone. Production and draw-down testing is still proceeding to determine reservoir properties.

The Lansing-Kansas City 'C' zone has been characterized in the Colliver - Carter area using drill cuttings, wireline logs, rock thin-sections, and the new injection well core. The oomoldic limestone reservoir, typical of many L-KC reservoirs, has been subdivided into six layers with unique reservoir properties. Core and log petrophysical analysis has defined trends in porosity, fluid-flow permeability, capillary pressure, and relative permeability that were used to define site properties. Fluid characterization indicates the oil at the site has a suitable minimum miscibility pressure for effective CO2 miscible flooding. A qualitative and quantitative demonstration site reservoir model was constructed for the interval to be flooded.

The original project design, based on non-site specific data, proposed to do a 40-acre flood. Advanced reservoir computer simulations and economic analysis of the L-KC demonstration site indicate that an economically viable and risk-balanced CO2 flood requires a larger pilot project (~60-acres) and additional reservoir characterization and testing. In addition to changing the flood pattern size, the source of CO2 has also changed. In the original project CO2 was to be trucked over 220 miles from the terminus of the CO2 pipeline in Guymon, Oklahoma. With the construction of the ethanol plant in Russell, only seven miles from the site, ICM Inc. has agreed to participate in the demonstration and will supply CO2.

At the present time a revised testing and economic plan for the site is under review by the DOE. If this revised plan is implemented, flood pattern well remediation and testing will progress through the summer and fall of 2001. A second CO2 injection well will be drilled and water injection to pressure up the reservoir in preparation for CO2 flooding will begin. Assuming that the additional reservoir properties data obtained during the testing confirm the demonstration site viability, carbon dioxide flooding will begin by the second quarter of 2002. If the demonstration proves the viability of CO2 flooding in these reservoirs, the project could lead to the construction of a carbon dioxide pipeline into Central Kansas and wide-spread application of this technology could lead to additional recovery of millions of barrels of oil.

Partners in the project are MV Energy, LLC, in Wichita, KS; ICM Corp. in Colwich, KS; Kinder-Morgan CO2 Company LP; the Kansas Geological Survey and the Tertiary Oil Recovery Project, both working through the KU Energy Research Center and the KU Center for Research, Inc. at the University of Kansas; and the Kansas Department of Commerce and Housing.

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North Midcontinent Resource Center
Petroleum Technology Transfer Council

Rodney Reynolds, Director
Dwayne McCune, Engineer
Lisa Love, Office Manager
Partially funded by the Department of Energy, Office of Fossil Energy through the National Petroleum Technology Office & Federal Energy Technology Center

Energy Research Center
Kansas Geological Survey

Dr. Tim Carr, Chief of Petroleum Research
Dr. W Lynn Watney, Executive Director ERC

Tertiary Oil Recovery Project
Dr. Don Green, Co-Director
Dr. G. Paul Willhite, Co-Director

Petroleum Technology News
Director, Rodney Reynolds
c/o Energy Research Center
1930 Constant Avenue
Lawrence, KS 66047
Phone: 785-864-7398
Fax: 785-864-7399
Email: Reynolds@cpe.engr.ku.edu

e-mail : webadmin@kgs.ku.edu
Last updated August 2001
http://www.kgs.ku.edu/PTTC/News/2000/q01-2-1.html