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

B. Göktaş, Turgay 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

Other

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

Fingerprint

Horizontal wells
Methane
Coal
Well completion
Desorption
Productivity

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)
Göktaş, B. ; Ertekin, Turgay. / A numerical study of methane production from multi-layered coal seams. Computer Applications in the Minerals Industries. editor / H. Xie ; Y. Wang ; Y. Jiang ; H. Xie ; Y. Wang ; Y. Jiang. 2001. pp. 613-618
@inproceedings{6579ce8989584249bb59379401516f12,
title = "A numerical study of methane production from multi-layered coal seams",
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.",
author = "B. G{\"o}ktaş and Turgay Ertekin",
year = "2001",
month = "12",
day = "1",
language = "English (US)",
isbn = "9058091740",
pages = "613--618",
editor = "H. Xie and Y. Wang and Y. Jiang and H. Xie and Y. Wang and Y. Jiang",
booktitle = "Computer Applications in the Minerals Industries",

}

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, Proceedings of the 29th International Symposium on Computer Applications in the Mineral Industries, Beijing, China, 4/25/01.

A numerical study of methane production from multi-layered coal seams. / Göktaş, B.; Ertekin, Turgay.

Computer Applications in the Minerals Industries. ed. / H. Xie; Y. Wang; Y. Jiang; H. Xie; Y. Wang; Y. Jiang. 2001. p. 613-618.

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

TY - GEN

T1 - A numerical study of methane production from multi-layered coal seams

AU - Göktaş, B.

AU - Ertekin, Turgay

PY - 2001/12/1

Y1 - 2001/12/1

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.

UR - http://www.scopus.com/inward/record.url?scp=0035785191&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035785191&partnerID=8YFLogxK

M3 - Conference contribution

SN - 9058091740

SN - 9789058091741

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.

ER -

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