TY - JOUR
T1 - Mechanisms in CO2-enhanced coalbed methane recovery process
AU - Asif, Mohammad
AU - Wang, Lei
AU - Wang, Rui
AU - Wang, Heng
AU - Hazlett, Randy D.
N1 - Funding Information:
The authors thank Nazarbayev University, Kazakhstan (Collaborative Research Project Reference: No. 021220CRP2022) for the financial support. Lei Wang thanks the National Natural Science Foundation of China (No. 52074040) and the Science & Technology Department of Sichuan Province (No. 2021YJ0355) for financial support.
Publisher Copyright:
© The Author(s) 2022.
PY - 2022/12
Y1 - 2022/12
N2 - Injection of CO2 and subsequent desorption of CH4 is considered to be the most efficient enhanced coalbed methane (ECBM) recovery technique to date. Meanwhile, CO2-ECBM is an excellent option for CO2 geo-sequestration for an extended period. Despite ongoing research efforts and several field applications of this technology, the mechanisms of the process have yet to be fully understood. The coalbed heterogeneity, the fluid interactions with coal, the CO2 induced swelling, and the continuous pressure and composition changes require outright insights for optimal application of the technique. Furthermore, intermolecular interactions of CO2 and CH4, their competitive adsorption on the dry/wet coal surface, and the dispersion and advection processes play an important role in defining the CO2-ECBM recovery process. An attempt has been made here to understand the key mechanisms of CO2-ECBM recovery in coalfields, particularly the adsorption of CO2 in the supercritical state at the recommended sequestration depth.
AB - Injection of CO2 and subsequent desorption of CH4 is considered to be the most efficient enhanced coalbed methane (ECBM) recovery technique to date. Meanwhile, CO2-ECBM is an excellent option for CO2 geo-sequestration for an extended period. Despite ongoing research efforts and several field applications of this technology, the mechanisms of the process have yet to be fully understood. The coalbed heterogeneity, the fluid interactions with coal, the CO2 induced swelling, and the continuous pressure and composition changes require outright insights for optimal application of the technique. Furthermore, intermolecular interactions of CO2 and CH4, their competitive adsorption on the dry/wet coal surface, and the dispersion and advection processes play an important role in defining the CO2-ECBM recovery process. An attempt has been made here to understand the key mechanisms of CO2-ECBM recovery in coalfields, particularly the adsorption of CO2 in the supercritical state at the recommended sequestration depth.
KW - CO injection
KW - competitive adsorption
KW - enhanced coalbed methane recovery
KW - van der Waals constant
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U2 - 10.46690/ager.2022.06.09
DO - 10.46690/ager.2022.06.09
M3 - Short survey
AN - SCOPUS:85143617865
SN - 2207-9963
VL - 6
SP - 531
EP - 534
JO - Advances in Geo-Energy Research
JF - Advances in Geo-Energy Research
IS - 6
ER -