Origin of late charged gas and its effect on property of oils in the Ordovician in Tazhong area | |
Wang, Zhaoming1; Cai, Chunfang2,3; Li, HongXia3; Yang, Haijun1; Wang, Tiankai3; Zhang, Ke1; Jia, Lianqi3; Chen, Kun2 | |
刊名 | JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
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2014-10-01 | |
卷号 | 122页码:83-93 |
关键词 | methane carbon isotope gas washing paraffin wax Tarim basin |
ISSN号 | 0920-4105 |
DOI | 10.1016/j.petrol.2014.06.020 |
文献子类 | Article |
英文摘要 | Natural gases in Ordovician reservoirs of the Tazhong area of the Tarim Basin appear derived by oil-cracking gas. The gases show very different geochemical characteristics. Most of the gases in the middle and eastern part of the No. 1 fault-slope zone are characterized by high gas dryness coefficients and have methane delta C-13(1) values heavier than primary gas. These features are different from gases in the western part of the No. 1 fault-slope zone. Thus, we propose that there existed mixing between more mature, C-13-rich methane dominated gas and less mature wet gas with C-13-depleted methane. The hypothesis is supported by (1) roughly a positive correlation between the gas dryness coefficient and methane delta C-13(1) value, (2) significantly heavier delta C-13(1) values in the eastern part of the study area than in the west, and (3) significantly heavier delta C-13(1) values than anticipated for unaltered gas co-generated with C-2-C-4. The charge and mixing of the dry gas into the Ordovician pools may have resulted in increase in wax contents of the oils, gas/oil ratios, gas dryness coefficients and methane delta C-13 values, leading to a positive correlation between gas/oil ratio and paraffin wax content as a result of continuous fractionation and removal of light components of an oil with progressive gas influx and thus gas washing. (C) 2014 Elsevier B.V. All rights reserved. |
WOS关键词 | THERMOCHEMICAL SULFATE REDUCTION ; TARIM BASIN ; NATURAL-GAS ; GEOCHEMICAL CHARACTERISTICS ; HYDROCARBON GASES ; CHINA ; PETROLEUM ; CARBONATES ; MARINE ; UPLIFT |
WOS研究方向 | Energy & Fuels ; Engineering |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000345182300009 |
资助机构 | China National Funds for Distinguished Young Scientists(41125009) ; China National Funds for Distinguished Young Scientists(41125009) ; Special Major Project on Petroleum Study(2011ZX05008-003) ; Special Major Project on Petroleum Study(2011ZX05008-003) ; China National Funds for Distinguished Young Scientists(41125009) ; China National Funds for Distinguished Young Scientists(41125009) ; Special Major Project on Petroleum Study(2011ZX05008-003) ; Special Major Project on Petroleum Study(2011ZX05008-003) ; China National Funds for Distinguished Young Scientists(41125009) ; China National Funds for Distinguished Young Scientists(41125009) ; Special Major Project on Petroleum Study(2011ZX05008-003) ; Special Major Project on Petroleum Study(2011ZX05008-003) ; China National Funds for Distinguished Young Scientists(41125009) ; China National Funds for Distinguished Young Scientists(41125009) ; Special Major Project on Petroleum Study(2011ZX05008-003) ; Special Major Project on Petroleum Study(2011ZX05008-003) |
内容类型 | 期刊论文 |
源URL | [http://ir.iggcas.ac.cn/handle/132A11/84888] ![]() |
专题 | 中国科学院地质与地球物理研究所 |
通讯作者 | Cai, Chunfang |
作者单位 | 1.PetroChina, Tarim Oilfield Co, Res Inst Petr Explorat & Dev, Korla 841000, Xinjiang, Peoples R China 2.PetroChina, Tarim Oilfield Co, Res Inst Petr Explorat & Dev, Korla 841000, Xinjiang, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Zhaoming,Cai, Chunfang,Li, HongXia,et al. Origin of late charged gas and its effect on property of oils in the Ordovician in Tazhong area[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2014,122:83-93. |
APA | Wang, Zhaoming.,Cai, Chunfang.,Li, HongXia.,Yang, Haijun.,Wang, Tiankai.,...&Chen, Kun.(2014).Origin of late charged gas and its effect on property of oils in the Ordovician in Tazhong area.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,122,83-93. |
MLA | Wang, Zhaoming,et al."Origin of late charged gas and its effect on property of oils in the Ordovician in Tazhong area".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 122(2014):83-93. |
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