Experimental Study on Gas Transport in Shale Matrix with Real Gas and Klinkenberg Effects
Gas transport in shale matrix is complex due to multiple mechanisms and is difficult to be investigated by macroscopic experiment. For Gas Research Institute (GRI) method, which is the most accepted one for gas transport investigation in shale matrix, the apparatus was modified by adding an automati...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/5579307 |
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| _version_ | 1832550526960533504 |
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| author | Xiaojun Wu Qing Wang Fangtao Lyu Zhengfu Ning Zongxiao Ren |
| author_facet | Xiaojun Wu Qing Wang Fangtao Lyu Zhengfu Ning Zongxiao Ren |
| author_sort | Xiaojun Wu |
| collection | DOAJ |
| description | Gas transport in shale matrix is complex due to multiple mechanisms and is difficult to be investigated by macroscopic experiment. For Gas Research Institute (GRI) method, which is the most accepted one for gas transport investigation in shale matrix, the apparatus was modified by adding an automatic gas supplement and pressurization (AGSP) system, and a numerical model considering the variation of real gas property and the Klinkenberg effect was established for data interpretation. Then, the intrinsic permeability and Klinkenberg coefficient were effectively obtained by maintaining high expanding speed of gas in apparatus and eliminating the negative effect of low filling degree of sample. By analysis, the ideal gas transports faster than real gas due to the viscosity difference at low pressure and the deviation factor difference at high pressure. For Wufeng-Longmaxi shale matrix, the positive influence of Klinkenberg effect on gas transport would attenuate with increasing pressure and is more powerful than bulk shale sample with fractures. Therefore, the gas transport in real shale matrix could be well known, which is meaningful to production forecast and evaluation in oil and gas fields. |
| format | Article |
| id | doaj-art-edb6aa791a5744fa9d81a8add93b1557 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-edb6aa791a5744fa9d81a8add93b15572025-02-03T06:06:40ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/55793075579307Experimental Study on Gas Transport in Shale Matrix with Real Gas and Klinkenberg EffectsXiaojun Wu0Qing Wang1Fangtao Lyu2Zhengfu Ning3Zongxiao Ren4State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, ChinaCollege of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, ChinaGas transport in shale matrix is complex due to multiple mechanisms and is difficult to be investigated by macroscopic experiment. For Gas Research Institute (GRI) method, which is the most accepted one for gas transport investigation in shale matrix, the apparatus was modified by adding an automatic gas supplement and pressurization (AGSP) system, and a numerical model considering the variation of real gas property and the Klinkenberg effect was established for data interpretation. Then, the intrinsic permeability and Klinkenberg coefficient were effectively obtained by maintaining high expanding speed of gas in apparatus and eliminating the negative effect of low filling degree of sample. By analysis, the ideal gas transports faster than real gas due to the viscosity difference at low pressure and the deviation factor difference at high pressure. For Wufeng-Longmaxi shale matrix, the positive influence of Klinkenberg effect on gas transport would attenuate with increasing pressure and is more powerful than bulk shale sample with fractures. Therefore, the gas transport in real shale matrix could be well known, which is meaningful to production forecast and evaluation in oil and gas fields.http://dx.doi.org/10.1155/2021/5579307 |
| spellingShingle | Xiaojun Wu Qing Wang Fangtao Lyu Zhengfu Ning Zongxiao Ren Experimental Study on Gas Transport in Shale Matrix with Real Gas and Klinkenberg Effects Geofluids |
| title | Experimental Study on Gas Transport in Shale Matrix with Real Gas and Klinkenberg Effects |
| title_full | Experimental Study on Gas Transport in Shale Matrix with Real Gas and Klinkenberg Effects |
| title_fullStr | Experimental Study on Gas Transport in Shale Matrix with Real Gas and Klinkenberg Effects |
| title_full_unstemmed | Experimental Study on Gas Transport in Shale Matrix with Real Gas and Klinkenberg Effects |
| title_short | Experimental Study on Gas Transport in Shale Matrix with Real Gas and Klinkenberg Effects |
| title_sort | experimental study on gas transport in shale matrix with real gas and klinkenberg effects |
| url | http://dx.doi.org/10.1155/2021/5579307 |
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