TY - GEN
T1 - A numerical study of methane production from multi-layered coal seams
AU - Göktaş, B.
AU - Ertekin, T.
PY - 2001
Y1 - 2001
N2 - This paper presents methane production analysis of thin-bedded coal seams separated by low permeability streaks. Applications of predicting flow responses of vertical, horizontal, undulating and cavity-completed wells are demonstrated for various coal seams. Effectiveness of each type of well completion in triggering methane desorption process is analyzed. As expected, horizontal wells drilled parallel to butt cleats are more effective than cavity-completed wells in accelerating methane production. However, horizontal wells may become ineffective in thin-bedded coal seams separated by low permeability streaks. In these cases, conductivity of permeability streaks controls the productivity of horizontal wells. It is also observed that undulating wells that partially penetrate the isolated layers have the potential of draining coal seams more effectively than vertical, horizontal and cavity-completed wells.
AB - This paper presents methane production analysis of thin-bedded coal seams separated by low permeability streaks. Applications of predicting flow responses of vertical, horizontal, undulating and cavity-completed wells are demonstrated for various coal seams. Effectiveness of each type of well completion in triggering methane desorption process is analyzed. As expected, horizontal wells drilled parallel to butt cleats are more effective than cavity-completed wells in accelerating methane production. However, horizontal wells may become ineffective in thin-bedded coal seams separated by low permeability streaks. In these cases, conductivity of permeability streaks controls the productivity of horizontal wells. It is also observed that undulating wells that partially penetrate the isolated layers have the potential of draining coal seams more effectively than vertical, horizontal and cavity-completed wells.
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M3 - Conference contribution
AN - SCOPUS:0035785191
SN - 9058091740
SN - 9789058091741
T3 - Computer Applications in the Minerals Industries
SP - 613
EP - 618
BT - Computer Applications in the Minerals Industries
A2 - Xie, H.
A2 - Wang, Y.
A2 - Jiang, Y.
A2 - Xie, H.
A2 - Wang, Y.
A2 - Jiang, Y.
T2 - Proceedings of the 29th International Symposium on Computer Applications in the Mineral Industries
Y2 - 25 April 2001 through 27 April 2001
ER -