朝南45区块扶余油层非均质性及建筑结构研究

发布时间：2018-03-04 15:02

本文选题：扶余油层　切入点：沉积微相　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：朝阳沟油田已进入“高含水、高采出”的双高阶段,但仍有大量的剩余油赋存于地下未被采出。由于剩余油的分布规律具有多样性,高度零散又相对集中,不同地区、不同环境的剩余油分布都不尽相同,如何进行储层非均质性和河道砂体内部构型研究,直接影响着剩余油的开采。本文以层序地层学、储层沉积学、石油地质学等相关理论为指导,在充分利用岩心、测井等资料的基础上,采用标准层对比、区域封闭骨架剖面对比、逼近控制对比等方法对朝阳沟油田南部45区块三个井区进行了统一精细对比,建立了三井区统一地层格架。将扶余油层划分为3个油层组、17个小层和46个沉积时间单元。通过对三口取心井的精细描述与分析,识别出该地区发育三角洲分流平原和三角洲前缘亚相,并建立了测井微相模式。同时绘制了三井区共138张平面沉积微相图,并对研究区单砂体类型及加密前后砂体规模变化进行了精细刻画。针对沉积微相的刻画已无法满足当前开发地质的需求,本文对储层的非均质性和单砂体内部构型进行了全面研究。运用多种方法提取薄夹层构型参数,建立了重点时间单元点坝砂体内部构型模式,研究单砂体内部构型和储层非均质性对于剩余油分布的影响,为挖潜剩余油、提高采收率提供了有力的保障。
[Abstract]:Chaoyang Gou Oilfield has entered the double high stage of "high water cut and high recovery", but there are still a large number of remaining oil in underground unproduced. Due to the diversity of remaining oil distribution law, highly scattered and relatively concentrated in different regions, The distribution of residual oil is different in different environments. How to study the heterogeneity of reservoir and the configuration of channel sand body directly affect the exploitation of remaining oil. In this paper, sequence stratigraphy, reservoir sedimentology, Under the guidance of petroleum geology and other related theories, on the basis of making full use of core, logging and other data, standard layer correlation and regional closed skeleton profile correlation are adopted. The approximation control correlation and other methods are used to unify and fine contrast the three well areas of 45 block in the south of Chaoyang Gou Oilfield. The unified stratigraphic framework of Sanjing area was established. The Fuyu reservoir was divided into 3 reservoirs, 17 sub-layers and 46 sedimentary time units. The fine description and analysis of three coring wells were carried out. The delta distributary plain and delta front subfacies are identified and the logging microfacies model is established. A total of 138 planar sedimentary microfacies diagrams are drawn in Sanjing area. The types of single sand bodies and the changes of sand body size before and after infilling are described in detail. The description of sedimentary microfacies can no longer meet the needs of current development geology. In this paper, the heterogeneity of reservoir and the configuration of single sand body are studied comprehensively. The configuration model of sand body of dam at key time unit is established by using many methods to extract the configuration parameters of thin intercalation. The influence of the structure of single sand body and reservoir heterogeneity on the distribution of residual oil is studied, which provides a strong guarantee for tapping potential residual oil and improving oil recovery.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE327

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