束鹿凹陷西斜坡油气输导体系及其成藏贡献研究

发布时间：2019-05-09 03:46

【摘要】：随着束鹿凹陷西斜坡勘探程度的不断提高,油气勘探目标越来越隐蔽,勘探难度越来越大,发现规模储量的难度逐渐增大。输导体系一直是束鹿西斜坡油气成藏研究的重要内容,但输导体系研究现状尚不能满足现代勘探对象和勘探方向把握的需求,是制约高效勘探的主要因素之一。本次研究是为了搞清束鹿西斜坡油气输导体系的类型和分布特征,明确其对油气成藏的贡献,为束鹿凹陷高效勘探提供保障!本文结合以往前人研究成果,根据最新资料对束鹿凹陷西斜坡的构造、沉积、储层发育状况重新认识,解剖典型油气藏,在静态成藏要素和动态成藏过程研究的基础上,利用地球化学特征追踪、计算机模拟、物理模拟实验等多种有效性的方法,对束鹿凹陷西斜坡输导体系框架中每个元素或者单元的发育、演化、特征和分布规律进行深入研究,搞清输导体系基本单元的组合方式,分析不同输导体系对油气成藏的贡献,明确下一步的有利勘探方向。通过研究,发现束鹿凹陷存在源内垂向和源外侧向两类油气输导体系,油气先沿内带断裂垂向输导,之后沿不整合、砂体向高部位外带侧向运移,油气主要聚集分布在顺向背形密集带和屋脊式密集带;研究发现强反向牙刷输导体系和双面牙刷输导体系对研究区油气成藏贡献最大;研究表明束鹿西斜坡输导体系形成时期控制油气藏形成时期。本次研究对同类断陷盆地斜坡区油气输导体系及控藏作用研究具有指导意义,对断陷凹陷斜坡带油气勘探具重要参考价值。
[Abstract]:With the continuous improvement of the exploration degree of the western slope of Shulu sag, the oil and gas exploration targets are becoming more and more subtle, the exploration difficulty is becoming more and more difficult, and the difficulty of discovering large-scale reserves is gradually increasing. The transportation system has always been an important part of the study of oil and gas accumulation in the western slope of Zulu, but the research status of the transportation system can not meet the needs of modern exploration objects and exploration directions, and is one of the main factors restricting efficient exploration. The purpose of this study is to clarify the types and distribution characteristics of oil and gas transportation system on the west slope of Xianlu, and to clarify its contribution to oil and gas accumulation, so as to provide a guarantee for efficient exploration in Shulu sag. Based on the previous research results, this paper reunderstands the structure, deposition and reservoir development of the western slope of Shulu sag according to the latest data, dissects the typical oil and gas reservoirs, and on the basis of the study of static reservoir forming elements and dynamic reservoir forming process, The development, evolution, characteristics and distribution of each element or unit in the framework of the transportation system of the western slope of Shulu sag are deeply studied by means of geochemical feature tracking, computer simulation, physical simulation experiments and other effective methods. The combination mode of the basic units of the transportation and transportation system is clarified, the contribution of different transportation systems to oil and gas accumulation is analyzed, and the favorable exploration direction for the next step is clarified. Through the study, it is found that there are two types of oil and gas transport systems in the Xiulu sag. The oil and gas transport system is vertical along the inner zone fault, then unconformity, and the sand body migrates laterally to the outer zone of the high position. The oil and gas accumulation mainly distributed in the forward back-shaped dense zone and roof ridge-type dense zone. It is found that the strong reverse toothbrush transportation system and the double-sided toothbrush transportation system contribute the most to the oil and gas accumulation in the study area, and the study shows that the formation period of the Shulu west slope transportation system controls the formation period of oil and gas reservoirs. This study has guiding significance for the study of oil and gas transportation system and reservoir control in the slope area of the same kind of fault depression, and has important reference value for oil and gas exploration in the slope zone of fault depression.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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