A numerical study of methane production from multi-layered coal seams

B. Göktaş, T. Ertekin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publicationComputer Applications in the Minerals Industries
EditorsH. Xie, Y. Wang, Y. Jiang, H. Xie, Y. Wang, Y. Jiang
Pages613-618
Number of pages6
StatePublished - Dec 1 2001
EventProceedings of the 29th International Symposium on Computer Applications in the Mineral Industries - Beijing, China
Duration: Apr 25 2001Apr 27 2001

Publication series

NameComputer Applications in the Minerals Industries

Other

OtherProceedings of the 29th International Symposium on Computer Applications in the Mineral Industries
CountryChina
CityBeijing
Period4/25/014/27/01

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Göktaş, B., & Ertekin, T. (2001). A numerical study of methane production from multi-layered coal seams. In H. Xie, Y. Wang, Y. Jiang, H. Xie, Y. Wang, & Y. Jiang (Eds.), Computer Applications in the Minerals Industries (pp. 613-618). (Computer Applications in the Minerals Industries).