دورية أكاديمية
Research progress on isotopic fractionation in the process of shale gas/coalbed methane migration
| العنوان: | Research progress on isotopic fractionation in the process of shale gas/coalbed methane migration |
|---|---|
| المؤلفون: | Wenbiao LI, Shuangfang LU, Junqian LI, Yongbo WEI, Shengxian ZHAO, Pengfei ZHANG, Ziyi WANG, Xiao LI, Jun WANG |
| المصدر: | Petroleum Exploration and Development, Vol 49, Iss 5, Pp 1069-1084 (2022) |
| بيانات النشر: | KeAi Communications Co., Ltd., 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | shale gas, coalbed methane, diffusive fractionation, adsorption/desorption fractionation, isotope fractionation model, natural gas migration, Petroleum refining. Petroleum products, TP690-692.5 |
| الوصف: | 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. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Chinese |
| تدمد: | 1876-3804 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S1876380422603331; https://doaj.org/toc/1876-3804 |
| DOI: | 10.1016/S1876-3804(22)60333-1 |
| URL الوصول: | https://doaj.org/article/9cfabf276a80401a9777454cacf83479 |
| رقم الأكسشن: | edsdoj.9cfabf276a80401a9777454cacf83479 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 18763804 |
|---|---|
| DOI: | 10.1016/S1876-3804(22)60333-1 |