Carbon and hydrogen isotopic compositions of C7 hydrocarbons and their geochemical significance in light oils/condensates from the Kuqa Depression, Tarim Basin, NW China
文献类型：期刊论文
| 作者 | Wang, Qinghua4; Deng, Hanyu1,2,3; Mo, Tao4; Zhang, Haizu4; Cheng, Bin1,3; Wang, Yunpeng1,3; Liao, Zewen1,3 |
| 刊名 | ORGANIC GEOCHEMISTRY
 |
| 出版日期 | 2024-06-01 |
| 卷号 | 192页码:11 |
| 关键词 | C(7)light hydrocarbons Carbon and hydrogen isotopes Light oil and condensate Oil identification Kuqa Depression Tarim Basin |
| ISSN号 | 0146-6380 |
| DOI | 10.1016/j.orggeochem.2024.104783 |
| 英文摘要 | In this study, the geochemical significance of the delta C-13 and delta H-2 values of selected C-7 light hydrocarbons (nC(7) = n-heptane; MCH = methylcyclohexane; Tol = toluene) is investigated in 58 light oil/condensate (LOC) samples from the Kuqa Depression of the Tarim Basin, NW China. For most of the LOCs in the western region, the nC(7), MCH, and Tol exhibit systematic differences where delta C-13(n)C7 < delta C-13(MCH) < delta C-13(Tol) and delta H-2(Tol) < delta H-2(n)C7 < delta H-2(MCH). LOCs from the eastern area have higher delta C-13(oil), delta C-13(Tol), and delta C-13(MCH) values than those from the western area and their delta C-13 values for C-7 hydrocarbons are similar and delta H-2(n)C7 < delta H-2(MCH) < delta H-2(Tol). These organic geochemical differences indicate that the LOCs from the western and eastern areas of the Kuqa Depression were mainly derived from lacustrine and coaly parent materials, respectively. The LOC reservoirs generally received a late hydrocarbon charge of the high-maturity natural gas, and the LOCs from the western Kela-Keshen areas subsequently experienced gas leakage. Hierarchical cluster analysis indicates that the most important influencing factor on the LOCs of the Kuqa Depression is the sedimentary facies (coaly and lacustrine), followed by gas leakage and then parent organic type (lacustrine sapropel and humic organic matter). A cross-plot of the Delta delta H-2(Tol-MCH) versus Tol/MCH can distinguish the origins of continental facies parent materials and gas leakage of the LOCs. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001299821200001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80590]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Cheng, Bin |
| 作者单位 | 1.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 4.Tarim Oilfield Co, Res Inst Petr Explorat & Dev, PetroChina, Korla 841000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Qinghua,Deng, Hanyu,Mo, Tao,et al. Carbon and hydrogen isotopic compositions of C7 hydrocarbons and their geochemical significance in light oils/condensates from the Kuqa Depression, Tarim Basin, NW China[J]. ORGANIC GEOCHEMISTRY,2024,192:11. |
| APA | Wang, Qinghua.,Deng, Hanyu.,Mo, Tao.,Zhang, Haizu.,Cheng, Bin.,...&Liao, Zewen.(2024).Carbon and hydrogen isotopic compositions of C7 hydrocarbons and their geochemical significance in light oils/condensates from the Kuqa Depression, Tarim Basin, NW China.ORGANIC GEOCHEMISTRY,192,11. |
| MLA | Wang, Qinghua,et al."Carbon and hydrogen isotopic compositions of C7 hydrocarbons and their geochemical significance in light oils/condensates from the Kuqa Depression, Tarim Basin, NW China".ORGANIC GEOCHEMISTRY 192(2024):11. |
入库方式： OAI收割
来源：广州地球化学研究所
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