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Proceedings of the 2016 2nd International Conference on Architectural, Civil and Hydraulics Engineering (ICACHE 2016)

Analysis of Productivity Controlling for Adjacent CBM Wells in Mining Subsidence Area: a Case in the Fanzhuang Block, Southern Qinshui Basin, China

Authors
Qingzhong Zhu, Zhengguang Zhang, Wensheng Zhang, Congcong Wu, Yongping Hang, Yangyang Li, Qiujia Hu
Corresponding Author
Qingzhong Zhu
Available Online November 2016.
DOI
https://doi.org/10.2991/icache-16.2016.49How to use a DOI?
Keywords
mining subsidence area; coalbed methane; positive and negative effect; permeability; gas content
Abstract
In order to analyze the productivity influence of mining subsidence area to adjacent coal seam gas wells, the paper studied physical properties and production characteristics of CBM wells in southwest Fanzhuang block. With changes of distance to mining subsidence area, distribution characteristics of gas content and permeability were expounded, variation character of gas production, water production of CBM wells were also analyzed. The mining subsidence area increased permeability of adjacent coal seam, meantime, reduced the gas content of coal seams, the coupling of positive and negative effects were main reasons for CBM production variability. The results indicates that with the increasing distance to mining subsidence area, the gas content increased gradually, and permeability decreased afterwards stable, the permeability achieved maximum value in depressurized zone; according to the production characteristics of CBM wells and permeability variation characteristics of adjacent coal seam, the around area of goaf was divided into zone I (pressure relief zone), zone II (intense interface area), zone III (weak interface area), zone IV (original coal district). Zone II and zone III are the most favorable area for high efficient development of CBM wells.
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Proceedings
2016 2nd International Conference on Architectural, Civil and Hydraulics Engineering (ICACHE 2016)
Part of series
Advances in Engineering Research
Publication Date
November 2016
ISBN
978-94-6252-255-8
ISSN
2352-5401
DOI
https://doi.org/10.2991/icache-16.2016.49How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Qingzhong Zhu
AU  - Zhengguang Zhang
AU  - Wensheng Zhang
AU  - Congcong Wu
AU  - Yongping Hang
AU  - Yangyang Li
AU  - Qiujia Hu
PY  - 2016/11
DA  - 2016/11
TI  - Analysis of Productivity Controlling for Adjacent CBM Wells in Mining Subsidence Area: a Case in the Fanzhuang Block, Southern Qinshui Basin, China
BT  - 2016 2nd International Conference on Architectural, Civil and Hydraulics Engineering (ICACHE 2016)
PB  - Atlantis Press
SP  - 254
EP  - 262
SN  - 2352-5401
UR  - https://doi.org/10.2991/icache-16.2016.49
DO  - https://doi.org/10.2991/icache-16.2016.49
ID  - Zhu2016/11
ER  -