| 低勘探程度盆地模拟研究——以南黄海盆地北部坳陷为例 |
| |
| 引用本文： | 庞玉茂,张训华,郭兴伟,肖国林,韩作振.低勘探程度盆地模拟研究——以南黄海盆地北部坳陷为例[J].海洋学报(英文版),2017,36(9):65-78. |
| |
| 作者姓名： | 庞玉茂 张训华 郭兴伟 肖国林 韩作振 |
| |
| 作者单位： | 地球科学与工程学院, 山东科技大学, 青岛, 266590;矿产资源评价与探测技术功能实验室, 青岛海洋科学与技术国家实验室, 青岛, 266071;中国科学院海洋研究所, 青岛, 266071;青岛海洋地质研究所, 青岛, 266071,矿产资源评价与探测技术功能实验室, 青岛海洋科学与技术国家实验室, 青岛, 266071;青岛海洋地质研究所, 青岛, 266071;南京地调中心, 中国地质调查局, 南京, 210016,矿产资源评价与探测技术功能实验室, 青岛海洋科学与技术国家实验室, 青岛, 266071;青岛海洋地质研究所, 青岛, 266071,矿产资源评价与探测技术功能实验室, 青岛海洋科学与技术国家实验室, 青岛, 266071;青岛海洋地质研究所, 青岛, 266071,地球科学与工程学院, 山东科技大学, 青岛, 266590 |
| |
| 基金项目： | The National Special Project for Marine Geology of China under contract No. DD20160147; the National Basic Research Program (973 Program) of China under contract No. 2013CB429701; the National Natural Science Foundation of China under contract No. 41210005. |
| |
| 摘 要： | 盆地模拟已成为当前沉积盆地研究的重要工具。南黄海盆地北部坳陷自裂陷期演化以来沉积了巨厚的中-新生代碎屑沉积，近年来的地质调查获取的数据为其盆地模拟研究提供了条件，本次研究在收集相关基础数据的基础上，首先对盆地构造热演化史进行了模拟，重建了盆地热史，模拟结果显示其古热流在中-晚侏罗世平均值约为61mW/m2，在约145-74Ma间不断上升至约80 mW/m2，随后缓慢下降至65 mW/m2，并持续到渐新世末期，据此将盆地演化阶段划分为裂前期、裂陷期及裂后期。盆地模拟结果显示北部坳陷在白垩纪逐步进入强裂陷演化阶段并经历快速沉积过程，至晚白垩纪裂陷发育程度中等，在此基础上，对研究区进行了三维盆地模拟，结果显示北部坳陷生烃门限深度大致位于古近系阜宁组顶部，下伏的侏罗系及白垩系烃源岩基本完成生排烃过程，其中侏罗系烃源岩生排烃主要发生在盆地发育的裂陷期及裂后期，而白垩系及古近系烃源岩生排烃主要发生在裂后期。尽管研究区尚处在低勘探程度阶段，但盆地模拟结果已能为研究区下一步的勘探提供重要的信息，此外，本次研究对模拟过程中的主要不确定性也进行了分析。
|
| 关 键 词： | 构造特征 构造演化 构造差异性 深水盆地 南海北部 |
| 收稿时间： | 2017/2/5 0:00:00 |
Basin modeling in the initial stage of exploration: a case study from the North Subbasin of the South Yellow Sea Basin |
| |
| PANG Yumao,ZHANG Xunhu,GUO Xingwei,XIAO Guolin and HAN Zuozhen.Basin modeling in the initial stage of exploration: a case study from the North Subbasin of the South Yellow Sea Basin[J].Acta Oceanologica Sinica,2017,36(9):65-78. |
| |
| Authors: | PANG Yumao ZHANG Xunhu GUO Xingwei XIAO Guolin and HAN Zuozhen |
| |
| Affiliation: | College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China;Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;Institute of Oceanology, Chinese Academy Science, Qingdao 266071, China;Qingdao Institute of Marine Geology, Qingdao 266071, China,Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;Qingdao Institute of Marine Geology, Qingdao 266071, China;Nanjing Center, China Geological Survey, Nanjing 210016, China,Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;Qingdao Institute of Marine Geology, Qingdao 266071, China,Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;Qingdao Institute of Marine Geology, Qingdao 266071, China and College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China |
| |
| Abstract: | Basin modeling has become an important tool for analyzing sedimentary basins. The North Subbasin of the South Yellow Sea Basin is filled with thick Meso-Cenozoic terrigenous deposits during the rift evolution stage. The accumulation of data and achievements of geological investigations in recent years have provided the preconditions for basin modeling. The necessary parameters and geological elements for simulations are collated and summarized. Modeling of tectono-thermal evolution is performed and the related trend in heat flow is reconstructed and calibrated. The heat flow value commences from an average level of 61 mW/m2 during Middle-Late Jurassic, rises to about 80 mW/m2 from circa 145 Ma to circa 74 Ma, and then undergoes a gradual decline to 65 mW/m2 until the end of Oligocene.Three evolutionary phases, namely, the initial rifting phase, syn-rifting phase, and post-rifting phase, have been identified. The modeling results show that the North Subbasin generally enters into a stage of strong rifting during Cretaceous and undergoes rapid subsidence until the Late Cretaceous, then follows by a stage of moderate rifting during the Paleogene. The input and general workflow involved in 3-D modeling are introduced. Reconstruction of the petroleum system in the North Subbasin reveals that the threshold depth of hydrocarbon generation is located near the top of the Paleogene Funing formation, and the underlying Jurassic and Cretaceous source rocks have reached or exceeded peak oil generation and have almost completed the generation and expulsion of hydrocarbons. The main generation and expulsion in the Jurassic source rocks take place during the syn-rifting and post-rifting phases, whereas the peak generation and expulsion in the Cretaceous and Paleogene source rocks take place during the post-rifting phase. Although the study area is still a relatively less explored sedimentary basin, the results of modeling can provide valuable information for exploration. A preliminary discussion of the main uncertainty factors is also presented. |
| |
| Keywords: | basin modeling tectono-thermal evolution history petroleum system South Yellow Sea Basin |
| 本文献已被 CNKI SpringerLink 等数据库收录！ |
| 点击此处可从《海洋学报(英文版)》浏览原始摘要信息 |
|
点击此处可从《海洋学报(英文版)》下载全文 |
|
