Geochemical characteristics of light hydrocarbons and their influencing factors in natural gases of the Kuqa Depression, Tarim Basin, NW China
文献类型：期刊论文
| 作者 | Peng, Weilong1; Hu, Guoyi1; Wang, Youwei2; Liu, Dan3; Lv, Yue1; Luo, Xiao4 |
| 刊名 | GEOLOGICAL JOURNAL
 |
| 出版日期 | 2018-11-01 |
| 卷号 | 53期号:6页码:2863-2873 |
| 关键词 | coal-derived gas gas field mixed source organic matter oil-associated gas source rock Xinjiang |
| ISSN号 | 0072-1050 |
| DOI | 10.1002/gj.3125 |
| 英文摘要 | In order to determine the source of the light hydrocarbons in the Kuqa Depression of the Tarim Basin, Northwest China, their geochemical characteristics are documented, and possible influencing factors are discussed in a broad context on the basis of geochemical analyses of natural gas samples from 19 wells in combination with previously reported natural gas components and carbon isotope values from the same depression. The biomarker analytical results show that (a) methyl cyclohexane (37.5-60.3%) of natural gas predominates the C-7 light hydrocarbon series (methyl cyclohexane, heptanes, and dimethyl cyclopentane), and (b) the heptane content (25.0-54.8%) is also relatively high. The C6-7 light hydrocarbon series (aromatics, normal alkanes, and cycloalkanes) have abnormally high aromatics (benzene and toluene) content (26.2-83.8%). Heptane value (13.31-37.77%) and isoheptane value (2.10-7.64%) indicate that the Kuqa natural gases are of high maturity and typical of coal-derived gas (gas generated by sapropelic source rock). Their light hydrocarbons, however, appear to have some characteristics of mixed-source organic matter. Specifically, the light hydrocarbons in the Dina 2 gas field show characteristics of the coal-derived gas; those in the Dabei gas field show some features of the oil-associated gas (gas generated by humic source rock), whereas those in the Kela 2 and Keshen 2 gas fields and Well Yangtake-101 display characteristics of the mixed source organic matter. The abnormally high content of the aromatics in the Kuqa Depression may have resulted mainly from their high productivity during the thermal maturity of humic type organic matters and the gases accumulation of late stage. The different relative contents of the aromatics in various oil and gas fields may have been accounted by different organic matter types, maturity, and distribution patterns of source rocks. |
| WOS关键词 | SOURCE ROCKS ; PETROLEUM ; ORIGIN ; CARBON ; GENERATION ; KELA-2 ; FIELD ; HISTORY ; IDENTIFICATION ; ACCUMULATIONS |
| 资助项目 | Natural Science Foundation of China[41473020] ; National Science Foundation Project for Young Scholars of China[41303037] ; National Oil and Gas Project of China[2016ZX05007-01] ; PetroChina Petroleum Exploration Major Science and Technology Program "Geochemistry and Accumulation Mechanisms of Coal-Derived Gas in China[2014B-0608] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000450653800027 |
| 出版者 | WILEY |
| 资助机构 | Natural Science Foundation of China ; Natural Science Foundation of China ; National Science Foundation Project for Young Scholars of China ; National Science Foundation Project for Young Scholars of China ; National Oil and Gas Project of China ; National Oil and Gas Project of China ; PetroChina Petroleum Exploration Major Science and Technology Program "Geochemistry and Accumulation Mechanisms of Coal-Derived Gas in China ; PetroChina Petroleum Exploration Major Science and Technology Program "Geochemistry and Accumulation Mechanisms of Coal-Derived Gas in China ; Natural Science Foundation of China ; Natural Science Foundation of China ; National Science Foundation Project for Young Scholars of China ; National Science Foundation Project for Young Scholars of China ; National Oil and Gas Project of China ; National Oil and Gas Project of China ; PetroChina Petroleum Exploration Major Science and Technology Program "Geochemistry and Accumulation Mechanisms of Coal-Derived Gas in China ; PetroChina Petroleum Exploration Major Science and Technology Program "Geochemistry and Accumulation Mechanisms of Coal-Derived Gas in China ; Natural Science Foundation of China ; Natural Science Foundation of China ; National Science Foundation Project for Young Scholars of China ; National Science Foundation Project for Young Scholars of China ; National Oil and Gas Project of China ; National Oil and Gas Project of China ; PetroChina Petroleum Exploration Major Science and Technology Program "Geochemistry and Accumulation Mechanisms of Coal-Derived Gas in China ; PetroChina Petroleum Exploration Major Science and Technology Program "Geochemistry and Accumulation Mechanisms of Coal-Derived Gas in China ; Natural Science Foundation of China ; Natural Science Foundation of China ; National Science Foundation Project for Young Scholars of China ; National Science Foundation Project for Young Scholars of China ; National Oil and Gas Project of China ; National Oil and Gas Project of China ; PetroChina Petroleum Exploration Major Science and Technology Program "Geochemistry and Accumulation Mechanisms of Coal-Derived Gas in China ; PetroChina Petroleum Exploration Major Science and Technology Program "Geochemistry and Accumulation Mechanisms of Coal-Derived Gas in China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/89612]  |
| 专题 | 地质与地球物理研究所_其他部门 |
| 通讯作者 | Peng, Weilong |
| 作者单位 | 1.PetroChina, Res Inst Petr Explorat & Dev, 20 Xueyuan Rd, Beijing 100083, Peoples R China 2.Delft Univ Technol, Sect Appl Geol, Delft, Netherlands 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 4.PetroChina, Res Inst Explorat & Dev, Tarim Oilfield Co, Korla, Xinjiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Peng, Weilong,Hu, Guoyi,Wang, Youwei,et al. Geochemical characteristics of light hydrocarbons and their influencing factors in natural gases of the Kuqa Depression, Tarim Basin, NW China[J]. GEOLOGICAL JOURNAL,2018,53(6):2863-2873. |
| APA | Peng, Weilong,Hu, Guoyi,Wang, Youwei,Liu, Dan,Lv, Yue,&Luo, Xiao.(2018).Geochemical characteristics of light hydrocarbons and their influencing factors in natural gases of the Kuqa Depression, Tarim Basin, NW China.GEOLOGICAL JOURNAL,53(6),2863-2873. |
| MLA | Peng, Weilong,et al."Geochemical characteristics of light hydrocarbons and their influencing factors in natural gases of the Kuqa Depression, Tarim Basin, NW China".GEOLOGICAL JOURNAL 53.6(2018):2863-2873. |
入库方式： OAI收割
来源：地质与地球物理研究所
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