Research progress on isotopic fractionation in the process of shale gas/coalbed methane migration
The research progress of isotopic fractionation in the process of shale gas/coalbed methane migration has been reviewed from three aspects: characteristics and influencing factors, mechanism and quantitative characterization model, and geological application. It is found that the isotopic fractionat...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2022-10-01
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| Series: | Petroleum Exploration and Development |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1876380422603331 |
| _version_ | 1797985776642818048 |
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| author | Wenbiao LI Shuangfang LU Junqian LI Yongbo WEI Shengxian ZHAO Pengfei ZHANG Ziyi WANG Xiao LI Jun WANG |
| author_facet | Wenbiao LI Shuangfang LU Junqian LI Yongbo WEI Shengxian ZHAO Pengfei ZHANG Ziyi WANG Xiao LI Jun WANG |
| author_sort | Wenbiao LI |
| collection | DOAJ |
| description | The research progress of isotopic fractionation in the process of shale gas/coalbed methane migration has been reviewed from three aspects: characteristics and influencing factors, mechanism and quantitative characterization model, and geological application. It is found that the isotopic fractionation during the complete production of shale gas/coalbed methane shows a four-stage characteristic of “stable-lighter-heavier-lighter again”, which is related to the complex gas migration modes in the pores of shale/coal. The gas migration mechanisms in shale/coal include seepage, diffusion, and adsorption/desorption. Among them, seepage driven by pressure difference does not induce isotopic fractionation, while diffusion and adsorption/desorption lead to significant isotope fractionation. The existing characterization models of isotopic fractionation include diffusion fractionation model, diffusion-adsorption/desorption coupled model, and multi-scale and multi-mechanism coupled model. Results of model calculations show that the isotopic fractionation during natural gas migration is mainly controlled by pore structure, adsorption capacity, and initial/boundary conditions of the reservoir rock. So far, the isotope fractionation model has been successfully used to evaluate critical parameters, such as gas-in-place content and ratio of adsorbed/free gas in shale/coal etc. Furthermore, it has shown promising application potential in production status identification and decline trend prediction of gas well. Future research should focus on: (1) the co-evolution of carbon and hydrogen isotopes of different components during natural gas migration, (2) the characterization of isotopic fractionation during the whole process of gas generation-expulsion-migration-accumulation-dispersion, and (3) quantitative characterization of isotopic fractionation during natural gas migration in complex pore-fracture systems and its application. |
| first_indexed | 2024-04-11T07:23:27Z |
| format | Article |
| id | doaj.art-9cfabf276a80401a9777454cacf83479 |
| institution | Directory Open Access Journal |
| issn | 1876-3804 |
| language | English |
| last_indexed | 2024-04-11T07:23:27Z |
| publishDate | 2022-10-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Petroleum Exploration and Development |
| spelling | doaj.art-9cfabf276a80401a9777454cacf834792022-12-22T04:37:09ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042022-10-0149510691084Research progress on isotopic fractionation in the process of shale gas/coalbed methane migrationWenbiao LI0Shuangfang LU1Junqian LI2Yongbo WEI3Shengxian ZHAO4Pengfei ZHANG5Ziyi WANG6Xiao LI7Jun WANG8Sanya Offshore Oil & Gas Research Institute, Northeast Petroleum University, Sanya 572025, China; Key Laboratory of Continental Shale Hydrocarbon Accumulation and Efficient Development, Ministry of Education, Northeast Petroleum University, Daqing 163318, ChinaSanya Offshore Oil & Gas Research Institute, Northeast Petroleum University, Sanya 572025, China; Key Laboratory of Continental Shale Hydrocarbon Accumulation and Efficient Development, Ministry of Education, Northeast Petroleum University, Daqing 163318, China; School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China; Corresponding authorSchool of Geosciences, China University of Petroleum (East China), Qingdao 266580, ChinaExploration and Development Research Institute of Daqing Oilfield Co. Ltd., Daqing 163712, ChinaSchool of Geosciences, China University of Petroleum (East China), Qingdao 266580, China; Shale Gas Research Institute of PetroChina Southwest Oil & Gasfield Company, Chengdu 610051, ChinaCollege of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaSchool of Geosciences, China University of Petroleum (East China), Qingdao 266580, ChinaSchool of Geosciences, China University of Petroleum (East China), Qingdao 266580, ChinaSchool of Geosciences, China University of Petroleum (East China), Qingdao 266580, ChinaThe research progress of isotopic fractionation in the process of shale gas/coalbed methane migration has been reviewed from three aspects: characteristics and influencing factors, mechanism and quantitative characterization model, and geological application. It is found that the isotopic fractionation during the complete production of shale gas/coalbed methane shows a four-stage characteristic of “stable-lighter-heavier-lighter again”, which is related to the complex gas migration modes in the pores of shale/coal. The gas migration mechanisms in shale/coal include seepage, diffusion, and adsorption/desorption. Among them, seepage driven by pressure difference does not induce isotopic fractionation, while diffusion and adsorption/desorption lead to significant isotope fractionation. The existing characterization models of isotopic fractionation include diffusion fractionation model, diffusion-adsorption/desorption coupled model, and multi-scale and multi-mechanism coupled model. Results of model calculations show that the isotopic fractionation during natural gas migration is mainly controlled by pore structure, adsorption capacity, and initial/boundary conditions of the reservoir rock. So far, the isotope fractionation model has been successfully used to evaluate critical parameters, such as gas-in-place content and ratio of adsorbed/free gas in shale/coal etc. Furthermore, it has shown promising application potential in production status identification and decline trend prediction of gas well. Future research should focus on: (1) the co-evolution of carbon and hydrogen isotopes of different components during natural gas migration, (2) the characterization of isotopic fractionation during the whole process of gas generation-expulsion-migration-accumulation-dispersion, and (3) quantitative characterization of isotopic fractionation during natural gas migration in complex pore-fracture systems and its application.http://www.sciencedirect.com/science/article/pii/S1876380422603331shale gascoalbed methanediffusive fractionationadsorption/desorption fractionationisotope fractionation modelnatural gas migration |
| spellingShingle | Wenbiao LI Shuangfang LU Junqian LI Yongbo WEI Shengxian ZHAO Pengfei ZHANG Ziyi WANG Xiao LI Jun WANG Research progress on isotopic fractionation in the process of shale gas/coalbed methane migration Petroleum Exploration and Development shale gas coalbed methane diffusive fractionation adsorption/desorption fractionation isotope fractionation model natural gas migration |
| title | Research progress on isotopic fractionation in the process of shale gas/coalbed methane migration |
| title_full | Research progress on isotopic fractionation in the process of shale gas/coalbed methane migration |
| title_fullStr | Research progress on isotopic fractionation in the process of shale gas/coalbed methane migration |
| title_full_unstemmed | Research progress on isotopic fractionation in the process of shale gas/coalbed methane migration |
| title_short | Research progress on isotopic fractionation in the process of shale gas/coalbed methane migration |
| title_sort | research progress on isotopic fractionation in the process of shale gas coalbed methane migration |
| topic | shale gas coalbed methane diffusive fractionation adsorption/desorption fractionation isotope fractionation model natural gas migration |
| url | http://www.sciencedirect.com/science/article/pii/S1876380422603331 |
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