A Field Study on Simulation of CO 2 Injection and ECBM Production and Prediction of CO 2 Storage Capacity in Unmineable Coal Seam

He, Qin; Mohaghegh, Shahab D.; Gholami, Vida

doi:10.1155/2013/803706

A Field Study on Simulation of CO ₂ Injection and ECBM Production and Prediction of CO ₂ Storage Capacity in Unmineable Coal Seam

Journal Article · Thu Dec 26 23:00:00 EST 2013 · Journal of Petroleum Engineering

DOI:https://doi.org/10.1155/2013/803706· OSTI ID:1197877

He, Qin ^[1]; Mohaghegh, Shahab D. ^[1]; Gholami, Vida ^[1]

Department of Petroleum and Natural Gas Engineering, West Virginia University, Morgantown, WV 26505, USA

CO ₂ sequestration into a coal seam project was studied and a numerical model was developed in this paper to simulate the primary and secondary coal bed methane production (CBM/ECBM) and carbon dioxide (CO ₂ ) injection. The key geological and reservoir parameters, which are germane to driving enhanced coal bed methane (ECBM) and CO ₂ sequestration processes, including cleat permeability, cleat porosity, CH ₄ adsorption time, CO ₂ adsorption time, CH ₄ Langmuir isotherm, CO ₂ Langmuir isotherm, and Palmer and Mansoori parameters, have been analyzed within a reasonable range. The model simulation results showed good matches for both CBM/ECBM production and CO ₂ injection compared with the field data. The history-matched model was used to estimate the total CO ₂ sequestration capacity in the field. The model forecast showed that the total CO ₂ injection capacity in the coal seam could be 22,817 tons, which is in agreement with the initial estimations based on the Langmuir isotherm experiment. Total CO ₂ injected in the first three years was 2,600 tons, which according to the model has increased methane recovery (due to ECBM) by 6,700 scf/d.

Sponsoring Organization:: USDOE

OSTI ID:: 1197877

Journal Information:: Journal of Petroleum Engineering, Journal Name: Journal of Petroleum Engineering Vol. 2013; ISSN 2314-5005

Publisher:: Hindawi Publishing CorporationCopyright Statement

Country of Publication:: Country unknown/Code not available

Language:: English

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A Field Study on Simulation of CO ₂ Injection and ECBM Production and Prediction of CO ₂ Storage Capacity in Unmineable Coal Seam