孤东油田八区馆上段沉积相及储层微观特征研究

发布时间：2018-06-06 08:29

本文选题：孤东油田八区 + 馆上段　；参考：《中国石油大学(华东)》2015年硕士论文

【摘要】：孤东油田是我国东部很具代表性的油田之一,是在1986年投产的整装油田。本文所研究的对象是馆上段主力储层Ng3-Ng6砂层组。孤东油田八区馆上段3-6砂层组主要为曲流河和辫状河沉积,砂体横向变化快,非均质性严重。经过近30年的开发,综合含水量高达95%,地下油水关系复杂。随着勘探开发的深入,原来的沉积相划分已无法满足现阶段的要求。因此,为了达到控制含水量的上升,稳定产量,提高采收率的目的,本文选择以孤东八区为研究对象,开展沉积相与储层微观特征的研究以满足油田后期开发的需要。首先,结合丰富的前人研究资料,以储层沉积学的基本原理和方法为指导,在测井曲线标准化和二次解释的基础上,主要利用测井曲线,辅以岩心观察和扫描电镜等分析测试方法,对孤东八区馆上段储层进行了划分与对比。通过研究,将馆上段主力含油的3-6砂层组划为25个小层,为沉积微相和储层微观特征的研究奠定了基础。然后,利用岩芯、测井曲线和分析测试等资料,对孤东油田八区沉积微相进行研究,将孤东河流相储层划分为四个亚相:河道、堤岸、河漫和废弃河道亚相。在此基础之上,分为7种沉积微相类型:边滩微相、心滩微相、天然堤微相、河漫滩微相、河漫湖泊微相、决口扇微相、废弃河道微相。最后,在对孤东八区馆上段3-6砂层组沉积相研究的基础之上,结合区内测井和各种分析测试资料,对储层的微观特征进行了研究,表征了储层孔隙度和渗透率在纵向和横向上的变化规律。通过研究发现,馆上段储层的物性主要受控于沉积微相。在孤东八区区内沉积相研究和储层微观特征研究的基础之上,综合利用生产动态资料,进行有利区的预测。
[Abstract]:Gudong Oilfield is one of the representative oilfields in the east of China, which was put into production in 1986. The object of this paper is the Ng3-Ng6 sand formation, the main reservoir in the upper Guanzhou formation. The 3-6 sand formation of the upper member of Guanshang formation in Gudong Oilfield is mainly composed of meandering and braided rivers. The sand body changes rapidly and its heterogeneity is serious. After nearly 30 years of development, the comprehensive water content is as high as 95%, and the relationship between underground oil and water is complex. With the development of exploration and development, the original sedimentary facies division can not meet the requirements of the present stage. Therefore, in order to control the increase of water content, stabilize production and improve oil recovery, this paper chooses Gudong eight area as the research object, carries out the research of sedimentary facies and reservoir microscopic characteristics to meet the needs of the later development of oil field. First of all, based on abundant previous research data and guided by the basic principles and methods of reservoir sedimentology, logging curves are mainly used on the basis of logging curve standardization and quadratic interpretation. With core observation and scanning electron microscope, the reservoir in the upper section of Guanshang in the eighth district of Gudong is divided and contrasted. Through the research, the 3-6 sandstone formation, which is the main oil-bearing reservoir in the upper part of Guanzhou formation, is divided into 25 sub-layers, which lays a foundation for the study of sedimentary microfacies and reservoir microscopic characteristics. Then, the sedimentary microfacies in the eighth area of Gudong Oilfield are studied by using the data of core, logging curve and analysis and testing. The reservoir of the fluvial facies in Gudong Oilfield is divided into four subfacies: river channel, embankment, river overflowing and abandoned channel subfacies. On this basis, there are seven types of sedimentary microfacies: shoal microfacies, core beach microfacies, natural embankment microfacies, floodplain microfacies, river and lake microfacies, crevasse fan microfacies, abandoned channel microfacies. Finally, on the basis of the study of the sedimentary facies of the 3-6 sand formation in the upper member of Guanshang in the eighth section of Gudong, the microcosmic characteristics of the reservoir are studied in combination with the well logging and various analytical test data in the area. The changes of porosity and permeability in the vertical and lateral direction are characterized. It is found that the physical properties of the upper member reservoir are mainly controlled by sedimentary microfacies. On the basis of the study of sedimentary facies and reservoir microscopic characteristics in the eighth area of Gudong region, the prediction of favorable areas is carried out by synthetically utilizing the production dynamic data.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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