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Analysis of productivity differences in vertical coalbed methane wells in the Shizhuangnan Block, Southern Qinshui Basin, and their influencing factors
| Content Provider | SAGE Publishing |
|---|---|
| Author | Yan, Xinlu Tang, Shuheng Zhang, Songhang Yi, Yongxiang Dang, Feng Zhang, Qian |
| Copyright Year | 2020 |
| Abstract | Coalbed methane wells in the Shizhuangnan Block exhibit significant productivity differences. The reasons were determined based on the impact analysis of geological factors and drainage strategies on production capacity at 82 wells. Grey relational analysis was further utilized to quantitatively analyze the correlation degree of geological parameters to production characteristics. It is found that the main reason for wells with high water production is the ingress of external water, i.e. connecting adjacent aquifer by natural faults or artificial fractures. And aquifer characteristics, especially thickness of aquifer has the greatest influence on the water production, followed by pore connectivity, porosity, and shale content. For the wells that have not been affected by external water, the gas productivity differences are mainly affected by reservoir conditions and drainage strategies. Finally, an analytical process was proposed to provide theoretical support for rational production of coalbed methane wells. |
| Related Links | https://journals.sagepub.com/doi/pdf/10.1177/0144598720925969?download=true |
| Starting Page | 1428 |
| Ending Page | 1453 |
| Page Count | 26 |
| ISSN | 01445987 |
| Issue Number | 5 |
| Volume Number | 38 |
| Journal | Energy Exploration & Exploitation (EEA) |
| e-ISSN | 20484054 |
| DOI | 10.1177/0144598720925969 |
| Language | English |
| Publisher | Sage Publications UK |
| Publisher Date | 2020-05-19 |
| Publisher Place | London |
| Access Restriction | Open |
| Rights Holder | © The Author(s) 2020 |
| Subject Keyword | productivity differences drainage strategy grey relational analysis influence factors Coalbed methane |
| Content Type | Text |
| Resource Type | Article |
| Subject | Fuel Technology Renewable Energy, Sustainability and the Environment Energy Engineering and Power Technology Nuclear Energy and Engineering |
