New insights into the role of system sealing capacity in shale evolution under conditions analogous to geology: Implications for organic matter evolution and petroleum generation
文献类型：期刊论文
| 作者 | Song, Dongjun2,3,4; Tuo, Jincai2; Dai, Shuang3,4; Wu, Chenjun5; Sun, Lina1; Zhang, Mingfeng2; Su, Long2 |
| 刊名 | MARINE AND PETROLEUM GEOLOGY
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 140页码:15 |
| 关键词 | Limited reactive space Lithostatic pressure Closed system Semi-closed system Shale gas content |
| ISSN号 | 0264-8172 |
| DOI | 10.1016/j.marpetgeo.2022.105659 |
| 英文摘要 | Closed and semi-closed pyrolysis of a lacustrine shale sample were conducted using the same instrument characterized by lithostatic pressure and limited reactive space in order to unravel the impacts of system sealing capacity on organic matter evolution and hydrocarbon generation in shales under conditions analogous to natural processes. The products and solid residues were subjected to chemical composition determination, gaseous carbon isotopic composition analysis, solvent extraction, and Rock-Eval pyrolysis. Higher organic matter transformation and oil retention contents were obtained at 300-500 degrees C in the closed pyrolysis system compared to those in the semi-closed system at the same temperature ranges. However, lower yields of hydrocarbons except for methane were obtained in the closed system at this temperature range, while the iso-/n-C-4,C-5 as well as C-1/C1-5 values were significantly higher in this system. Stronger recombined reactions between kerogen and hydrocarbons were proposed to occur at 300-500 degrees C during the closed pyrolysis process, leading to the consumption of oil and hydrocarbon gases. Ultimately, positive deviations of initially more negative delta C-13(2 similar to 3) values were occurred in the closed system, resulting in similar delta C-13(2 similar to 3) values from the two systems before secondary cracking of hydrocarbon gases commences, but the delta C-13(1) value from the closed system was overall more negative. Different water retention ratios and hydrocarbon expulsion efficiencies induced by system sealing capacity are the predominant factor controlling organic matter evolution and petroleum generation during the pyrolysis processes. This highlights that the different gas contents of the Cambrian and Silurian shales in South China may be associated with the differences in the system sealing capacities of shales, although the sedimentary environment of the studied sample is lacustrine, and the lower methane content of the Cambrian shale gas is probably ascribed to semi-closed system. Finally, a higher ratio of oil cracking gas may be an important signal for natural gas systems that have better exploration potential. |
| WOS关键词 | HYDROCARBON SOURCE ROCKS ; GAS GENERATION ; WATER-PRESSURE ; BARNETT SHALE ; OIL CRACKING ; NATURAL-GAS ; ORDOS BASIN ; MISSISSIPPIAN BARNETT ; LABORATORY PYROLYSIS ; ISOTOPE COMPOSITIONS |
| 资助项目 | National Natural Science Foun-dation of China of China[41672127] ; National Natural Science Foun-dation of China of China[41972213] ; Key Laboratory of Petroleum Resources Research, Gansu Province[SZDKFJJ20211003] ; Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK0704] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000793130300001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Natural Science Foun-dation of China of China ; National Natural Science Foun-dation of China of China ; Key Laboratory of Petroleum Resources Research, Gansu Province ; Key Laboratory of Petroleum Resources Research, Gansu Province ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; National Natural Science Foun-dation of China of China ; National Natural Science Foun-dation of China of China ; Key Laboratory of Petroleum Resources Research, Gansu Province ; Key Laboratory of Petroleum Resources Research, Gansu Province ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; National Natural Science Foun-dation of China of China ; National Natural Science Foun-dation of China of China ; Key Laboratory of Petroleum Resources Research, Gansu Province ; Key Laboratory of Petroleum Resources Research, Gansu Province ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; National Natural Science Foun-dation of China of China ; National Natural Science Foun-dation of China of China ; Key Laboratory of Petroleum Resources Research, Gansu Province ; Key Laboratory of Petroleum Resources Research, Gansu Province ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/105929]  |
| 专题 | 地质与地球物理研究所_兰州油气中心 |
| 通讯作者 | Tuo, Jincai |
| 作者单位 | 1.Yangtze Univ, Hubei Cooperat Innovat Ctr Unconvent Oil & Gas, Wuhan 430100, Peoples R China 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China 3.Lanzhou Univ, Key Lab Mineral Resources Western China Gansu Pro, Lanzhou 730000, Peoples R China 4.Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Peoples R China 5.Yangtze Univ, Coll Resources & Environm, Wuhan 430100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Dongjun,Tuo, Jincai,Dai, Shuang,et al. New insights into the role of system sealing capacity in shale evolution under conditions analogous to geology: Implications for organic matter evolution and petroleum generation[J]. MARINE AND PETROLEUM GEOLOGY,2022,140:15. |
| APA | Song, Dongjun.,Tuo, Jincai.,Dai, Shuang.,Wu, Chenjun.,Sun, Lina.,...&Su, Long.(2022).New insights into the role of system sealing capacity in shale evolution under conditions analogous to geology: Implications for organic matter evolution and petroleum generation.MARINE AND PETROLEUM GEOLOGY,140,15. |
| MLA | Song, Dongjun,et al."New insights into the role of system sealing capacity in shale evolution under conditions analogous to geology: Implications for organic matter evolution and petroleum generation".MARINE AND PETROLEUM GEOLOGY 140(2022):15. |
入库方式： OAI收割
来源：地质与地球物理研究所
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