LaBarge Project: Availability of CO2 for Tertiary Projects
- J.K. Hunter (Exxon Co. U.S.A.) | L.A. Bryan (Exxon Co. U.S.A.)
- Document ID
- Society of Petroleum Engineers
- Journal of Petroleum Technology
- Publication Date
- November 1987
- Document Type
- Journal Paper
- 1,407 - 1,410
- 1987. Society of Petroleum Engineers
- 4.1.2 Separation and Treating, 5.4 Enhanced Recovery, 6.1.5 Human Resources, Competence and Training, 4.1.5 Processing Equipment, 4.3.4 Scale, 5.4.2 Gas Injection Methods, 4.1.3 Dehydration, 5.8.7 Carbonate Reservoir, 4.2 Pipelines, Flowlines and Risers, 5.6.4 Drillstem/Well Testing
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Exxon Co., USA is constructing a large gas processing facility northeast of Kemmerer on the Lincoln-Sweetwater County line in southwest Wyoming. The plant will process raw gas from three Exxon operated units northwest of LaBarge, in Sublette County.
The LaBarge Field is being developed primarily to recover and sell methane; however, the field is also a significant source of carbon dioxide, sulfur and helium. As a source of CO,, the LaBarge Field will provide oil producers in the Rocky Mountain area an opportunity to increase production in their mature fields through EOR projects.
A 649-mile pipeline is planned to transport up to 650 Mcfd of CO, to users throughout Wyoming and Willisiton Basin. Exxon's CO, marketing survey indicates potential CO, demand of 4.4 trillion cubic feet in the planned marketing area for enhanced oil recovery. About 25% of the CO2 demand identified is already contracted. LaBarge CO2 will allow Northern Rocky Mountain 'operators to potentially recover an additional one billion barrels of oil reserves.
Exxon's gas plant, scheduled for startup this year, is designed to process 480 million cubic feet per day of raw gas yielding 114 Mcfd ( m = million, G = billion, T = trillion) of methane, and 250 mcfd of CO2. The initial phase of the plant is currently being built and a future expansion is under evaluation. Expansion timing will depend on the economic climate and commitments for plant products. while methane is the primary product being developed in the LaBarge Project, the field will also produce marketable quantities of CO2, sulfer, and helium. The CO2 is being offered for sale to operators in Colorado, Wyoming, North Dakota, Montana, and Canada as an injectant for their EOR projects.
The well field consists of three Exxon operated units covering over 63 square miles (see Fig. 1). These units are located about 10 miles northwest of the town of LaBarge in Sublette County. Exxon owns an average of 95% (Jan.'86, leased committed acreage) of the Lake Ridge, Fogarty Creek, and Graphite Units. Production is from the Madison, a 900 foot thick carbonate reservoir ranging in depth from 14,000 to 18,000 feet. Structurally the Madison Reservoir is located on a large NW-SE trending anticline. The boundaries have not yet been accurately defined but do extend beyond the three Exxon operated units. The National Petroleum Council estimated that the LaBarge-Big Piney area contains 20-25 Tcf of CO2 reserves alone (EOR, p.33, 1984).
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