Effective Methane Extraction Radius after High-Pressure Water Jet Slotting
The effective radius of methane extraction after high-pressure water jet slotting is the most important parameter for borehole optimization and extraction time planning. We applied a steady flow model and thermal-hydrological-mechanical (THM) coupling model to calculate the effective radius after hi...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/8820540 |
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| _version_ | 1850209132076859392 |
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| author | Hu Ke Xia Binwei Liu Chengwei Lu Yiyu |
| author_facet | Hu Ke Xia Binwei Liu Chengwei Lu Yiyu |
| author_sort | Hu Ke |
| collection | DOAJ |
| description | The effective radius of methane extraction after high-pressure water jet slotting is the most important parameter for borehole optimization and extraction time planning. We applied a steady flow model and thermal-hydrological-mechanical (THM) coupling model to calculate the effective radius after high-pressure water jet slotting. Field measurements at the Zhongliangshan coal mine show that both the steady flow model and the THM coupling model can accurately represent the effective radius, and the THM coupling model provides further information regarding extraction time. After that, a variety of factors, including extraction time, coal burial depth, slot radius, initial permeability, and initial methane pressure, are discussed. The effective radius of a slotted borehole is 1.94 times larger than that of a conventional borehole. |
| format | Article |
| id | doaj-art-95e6bc898886434daba247f8b568005d |
| institution | OA Journals |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-95e6bc898886434daba247f8b568005d2025-08-20T02:10:06ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/88205408820540Effective Methane Extraction Radius after High-Pressure Water Jet SlottingHu Ke0Xia Binwei1Liu Chengwei2Lu Yiyu3Institute of Mining and Special Civil Engineering, TU Bergakademie Freiberg, 09599, Freiberg, GermanyState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaSchool of Mines and Civil Engineering, Liupanshui Normal University, Liupanshui 553004, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaThe effective radius of methane extraction after high-pressure water jet slotting is the most important parameter for borehole optimization and extraction time planning. We applied a steady flow model and thermal-hydrological-mechanical (THM) coupling model to calculate the effective radius after high-pressure water jet slotting. Field measurements at the Zhongliangshan coal mine show that both the steady flow model and the THM coupling model can accurately represent the effective radius, and the THM coupling model provides further information regarding extraction time. After that, a variety of factors, including extraction time, coal burial depth, slot radius, initial permeability, and initial methane pressure, are discussed. The effective radius of a slotted borehole is 1.94 times larger than that of a conventional borehole.http://dx.doi.org/10.1155/2020/8820540 |
| spellingShingle | Hu Ke Xia Binwei Liu Chengwei Lu Yiyu Effective Methane Extraction Radius after High-Pressure Water Jet Slotting Geofluids |
| title | Effective Methane Extraction Radius after High-Pressure Water Jet Slotting |
| title_full | Effective Methane Extraction Radius after High-Pressure Water Jet Slotting |
| title_fullStr | Effective Methane Extraction Radius after High-Pressure Water Jet Slotting |
| title_full_unstemmed | Effective Methane Extraction Radius after High-Pressure Water Jet Slotting |
| title_short | Effective Methane Extraction Radius after High-Pressure Water Jet Slotting |
| title_sort | effective methane extraction radius after high pressure water jet slotting |
| url | http://dx.doi.org/10.1155/2020/8820540 |
| work_keys_str_mv | AT huke effectivemethaneextractionradiusafterhighpressurewaterjetslotting AT xiabinwei effectivemethaneextractionradiusafterhighpressurewaterjetslotting AT liuchengwei effectivemethaneextractionradiusafterhighpressurewaterjetslotting AT luyiyu effectivemethaneextractionradiusafterhighpressurewaterjetslotting |