CO(sub 2) Sequestration Potential of Texas Low-Rank Coals. Quarterly Technical Progress Report.

Mcvay, D. A. ; Ayers, W. B. ; Jensen, J. L.

Technical Information Center Oak Ridge Tennessee

关键词: Carbon dioxide;    Sequestering;    Coal;    Enhanced recovery;    Calcite;   

RP-ID  :  DE2005837839

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The objectives of this project are to evaluate the feasibility of carbon dioxide (CO(sub 2)) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (CBM) recovery as an added benefit of sequestration. There were three main objectives for this reporting period, which related to obtaining accurate parameters for reservoir model description and modeling reservoir performance of CO(sub 2) sequestration and enhanced coalbed methane recovery. The first objective was to collect and desorb gas from 10 sidewall core coal samples from an Anadarko Petroleum Corporation well (APCL2 well) at approximately 6,200-ft depth in the Lower Calvert Bluff Formation of the Wilcox Group in east-central Texas. The second objective was to measure sorptive capacities of these Wilcox coal samples for CO(sub 2), CH(sub 4), and N(sub 2). The final objective was to contract a service company to perform pressure transient testing in Wilcox coal beds in a shut-in well, to determine permeability of deep Wilcox coal. Bulk density of the APCL2 well sidewall core samples averaged 1.332 g/cc. The 10 sidewall core samples were placed in 4 sidewall core canisters and desorbed. Total gas content of the coal (including lost gas and projected residual gas) averaged 395 scf/ton on an as-received basis.