论文部分内容阅读
在万安盆地北部隆起西南段发现的西卫16潜山披覆构造油气藏,是一个大型、高丰度、高产、轻质油气藏。本文详细讨论了该构造的生、储、盖和圈闭条件,利用流体势软件计算了不同目的层的流体势,绘制了不同目的层的油、水势叠合图和气、水势叠合图,分析了圈闭相邻凹陷油气运聚与圈闭时空匹配关系;编制主要断层的断面剖面图,综合考虑断裂活动性质、持续时间、断裂带物质、岩性对接情况等多种地质因素,对断层封闭条件进行了分析,从三维方向来研究断层的侧封、顶封情况;在此基础上对该构造油气聚集规律及油气运聚地质模式进行分析,认为该构造油气以侧向和阶梯式运聚模式为主,具备了形成大型复式油气藏的条件。
The Xiewang 16 buried hill drastic structural reservoir discovered in the uplifted southwestern section of the northern part of Wan’an Basin is a large, high-abundance, high-yielding and light-weight reservoir. In this paper, the conditions of formation, storage, cover and trapping of this structure are discussed in detail. Fluid potential software is used to calculate the fluid potential of different target layers. Oil and water superimposed diagrams and gas and water potential superimposed diagrams of different target layers are drawn and analyzed The relationship between the migration and accumulation of traps and the temporal and spatial matching of traps in the adjacent sags of the traps; compiling the cross-section of the main faults, comprehensively considering various geological factors such as fault activity, duration, fracture zone material and lithology docking, Conditions are analyzed, and the side seals and top seals of the fault are studied from the three-dimensional direction. On the basis of this, the laws of hydrocarbon accumulation and the geologic pattern of hydrocarbon migration and accumulation are analyzed. It is concluded that the tectonic hydrocarbon is transported laterally and steppedly Mode-based, with the formation of large-scale multi-reservoir conditions.