Modeling of Overpressure Generation-Evolution of the Paleogene Source Rock and Implications for the Linnan Sag, Eastern China
文献类型：期刊论文
| 作者 | Li, Chao1,3; Zhang, Likuan1,3; Luo, Xiaorong1,3; Wang, Bing5; Lei, Yuhong1,3; Cheng, Ming1,3; Luo, Hongmei4; Wang, Changjiang4; Yu, Lan2 |
| 刊名 | FRONTIERS IN EARTH SCIENCE
 |
| 出版日期 | 2022-01-25 |
| 卷号 | 10页码:21 |
| 关键词 | overpressure mechanism paleo-pressure evolution basin modeling hydrocarbon migration Shahejie formation |
| DOI | 10.3389/feart.2022.829322 |
| 英文摘要 | Subsurface pore pressure affects the direction of hydrocarbon migration, determines the distribution of the hydrocarbon reservoir, and provides scientific reference for drilling planning. Overpressures are widespread in the Paleogene Shahejie Formation in the Linnan Sag, which is closely related to the distribution of oil reservoir. However, the overpressure generation mechanisms are undefined, let alone the relationship between the evolution of paleo-overpressure and hydrocarbon migration in the Linnan Sag, which brings great challenges for the understanding of oil accumulation and future oil exploration. Basin modeling was carried out to solve the issue of quantitative evaluation of overpressure mechanisms and to restore the overpressure evolution of the Paleogene source rocks. The implications for the pore pressure prediction and oil migration in the Linnan Sag were further discussed. The modeling results show that the disequilibrium compaction of mudstones is a dominated overpressure mechanism of source rocks in the Linnan Sag, which accounts for approximately 90% of the measured overpressure in the region. The remainder part of overpressure was generated by hydrocarbon generation; however, the effects of hydrocarbon generation on overpressure evolution were limited in the intervals deeper than 4000 m. The significance of the overpressure mechanism is that the porosity-dependent method will give a satisfactory pressure prediction result in the current exploration depth range (3800-4300 m). The overpressure evolution of the source rock has undergone a cycle of "accumulation-dissipation-reaccumulation," which corresponds to the age of 45.5-24.0 Ma (Es3-Ed period), 24.6-14.0 Ma (Ed period), and 14.0-0 Ma (Ng-Qp period). The oil potential of the Es3l shows good inheritance with the overpressure in the source rock, indicating overpressure increased the driving force for oil migration. The oil released from the source rock has a trend to migration from the center of the sag to the uplift belt, which is also indicated by the physical properties of crude oil. The knowledge of the generation and evolution of overpressure has great significance for further exploration in the Linnan Sag and other extensional basins. |
| WOS关键词 | PORE-PRESSURE PREDICTION ; BOHAI BAY BASIN ; SEDIMENTARY BASINS ; JIYANG DEPRESSION ; COMPACTION ; MECHANISMS ; PETROLEUM ; EXAMPLE ; MATURATION ; ORIGIN |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | FRONTIERS MEDIA SA |
| WOS记录号 | WOS:000752662800001 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/104888]  |
| 专题 | 地质与地球物理研究所_中国科学院油气资源研究重点实验室 |
| 通讯作者 | Zhang, Likuan; Luo, Xiaorong |
| 作者单位 | 1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China 2.SINOPEC, Petr Explorat & Prod Res Inst, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing, Peoples R China 4.SINOPEC Shengli Oilfield Co, Explorat & Dev Res Inst, Dongying, Peoples R China 5.China Univ Petr, Coll Geosci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Chao,Zhang, Likuan,Luo, Xiaorong,et al. Modeling of Overpressure Generation-Evolution of the Paleogene Source Rock and Implications for the Linnan Sag, Eastern China[J]. FRONTIERS IN EARTH SCIENCE,2022,10:21. |
| APA | Li, Chao.,Zhang, Likuan.,Luo, Xiaorong.,Wang, Bing.,Lei, Yuhong.,...&Yu, Lan.(2022).Modeling of Overpressure Generation-Evolution of the Paleogene Source Rock and Implications for the Linnan Sag, Eastern China.FRONTIERS IN EARTH SCIENCE,10,21. |
| MLA | Li, Chao,et al."Modeling of Overpressure Generation-Evolution of the Paleogene Source Rock and Implications for the Linnan Sag, Eastern China".FRONTIERS IN EARTH SCIENCE 10(2022):21. |
入库方式： OAI收割
来源：地质与地球物理研究所
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