期刊
SEDIMENTARY GEOLOGY
卷 261, 期 -, 页码 65-75出版社
ELSEVIER
DOI: 10.1016/j.sedgeo.2012.03.005
关键词
Slope break belt; Subtle reservoir; Qikou Sag in Bohai Bay Basin; Eastern China; Palaeogene
类别
资金
- research institute of exploration and development, PetroChina Dagang Oilfield Company
- National Natural Science Foundation of China (NSFC) [40872077]
- open research program foundation of the State Key Laboratory of Geological Processes and Mineral Resources of China University of Geosciences [GPMR200913]
- foundation of Key Laboratory of Tectonics and Petroleum Resources (China University of Geosciences) of Ministry of Education [TPR-2010-12]
The division and analysis of the genetic types of slope breaks will be helpful in studying the enrichment regularity of hydrocarbon reservoirs because the enrichment of hydrocarbon reservoirs is closely related to the shelf-slope break types in continental lake basins or sags in China. This paper analyses the types of basin margins in Qikou Sag by assessing the sag boundary fault characteristics and spatial combination patterns using high-resolution three-dimensional seismic data, well logs and other data. Basin margins were divided into four types: steep slope fault belts, multi-level step-fault belts, steep slope step-fault belts and slope break flexure belts. Different types of depositional systems developed near the different basin margins, and correspondingly, four types of sequence stratigraphic patterns were developed. According to the study of trap types that occur adjacent to the different slope-break zones, fault-controlled lithologic traps were the predominant trap type in fault-controlled slope break zones, and lithologic traps occurred in the sag centre distant from the boundary faults. Along the slope break flexure belt, different types of traps developed in different slope break levels; stratigraphic unconformity traps occurred within the first slope break level, and stratigraphic lithologic traps and up-dip pinchout lithologic traps were found in the second slope break level. So the deployment of future exploration should be conducted at different levels in Qikou Sag. (C) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据