CO2 Sequestration Potential of Texas Low-Rank Coals [electronic resource]
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| Online Access: |
Online Access |
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| Corporate Authors: | , |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C : Oak Ridge, Tenn. :
United States. Dept. of Energy ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
2006.
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| Subjects: |
| Abstract: | The objectives of this project are to evaluate the feasibility of carbon dioxide (CO₂) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (ECBM) recovery as an added benefit of sequestration. The main objectives for this reporting period were to (1) determine the effects of permeability anisotropy on performance of CO₂ sequestration and ECBM production in the Lower Calvert Bluff Formation (LCB) of the Wilcox Group coals in east-central Texas, and (2) begin reservoir and economic analyses of CO₂ sequestration and ECBM production using horizontal wells. To evaluate the effects of permeability anisotropy on CO₂ sequestration and ECBM in LCB coal beds, we conducted deterministic reservoir modeling studies of 100% CO₂ gas injection for the 6,200-ft depth base case (Case 1b) using the most likely values of the reservoir parameters. Simulation results show significant differences in the cumulative volumes of CH₄ produced and CO₂ injected due to permeability anisotropy, depending on the orientation of injection patterns relative to the orientation of permeability anisotropy. This indicates that knowledge of the magnitude and orientation of permeability anisotropy will be an important consideration in the design of CO₂ sequestration and ECBM projects. We continued discussions with Anadarko Petroleum regarding plans for additional coal core acquisition and laboratory work to further characterize Wilcox low-rank coals. As part of the technology transfer for this project, we submitted the paper SPE 100584 for presentation at the 2006 SPE Gas Technology Symposium to be held in Calgary, Alberta, Canada on May 15-18, 2006. |
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| Item Description: | Published through the Information Bridge: DOE Scientific and Technical Information. 05/01/2006. Duane A. McVay; Jerry L. Jensen; Walter B. Ayers, Jr. |
| Type of Report and Period Covered Note: | Quarterly; |