文章基本信息

标题：OUTCROP BASED GEOLOGICAL MODELLING OF AN ANCIENT DEEP-WATER SYSTEM: UNIT E, LAINGSBURG KAROO
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作者：Bin Chen ; Dazhong Ren ; Wei Sun 等
期刊名称：Fresenius Environmental Bulletin
印刷版ISSN：1018-4619
出版年度：2018
卷号：27
期号：10
页码：6802-6811
语种：English
出版社：PSP Publishing
摘要：Geological models built using traditional subsurface datasets gives excellent scale as well as continuity. However, detail on the horizontal and vertical distribution of sedimentary grainsize and facies is often lost since they are always below the resolution of such datasets. Thus, outcrop datasets are used to address this problem. They always provide information of the reservoir which is difficult to acquire from subsurface datasets. In this paper, a method of building integrated geological models based on an outcrop dataset has been introduced. The geological model of the Unit E, Laingsburg Karoo, South Africa deep-water system has provided an obvious insight of how architectures and facies are distributed in three dimensions (3D). This paper suggests that Unit E, Laingsburg Karoo is a sand prone unit which deposits in a slope to basin floor deep-water depositional system. It consists of three sub-units, namely, E1, E2, and E3. The sediment of E2 is mainly deposited on the slope while E3 is more basinward. Hydrocarbon potential of Unit E also has been estimated by petrophysical modelling and volume calculation. This synthetic study, therefore, has provided an analogue to other deep-water systems with a similar depositional environment.
关键词：Outcrop;geological models;deep-water system;sand prone unit