L8-JP182井区高II1-18小层剩余油分布规律研究

发布时间：2018-06-03 14:21

本文选题：喇嘛甸油田 + 高台子油层　；参考：《东北石油大学》2015年硕士论文

【摘要】：我国大部分油田已经进入了高含水、高采出程度的阶段,特别是已经开发了四十多年的大庆油田喇嘛甸地区目前平均含水已经超过了90%,因此研究剩余油的分布规律对油田的进一步开发与调整具有重要意义。本文以高分辨率层序地层学和储层沉积学为指导,对喇嘛甸油田喇北东块L8-JP182井区高II1-18小层进行了系统的高频等时层序地层划分对比,将目的层划分为1个长期基准面旋回、3个中期基准面旋回和8个短期基准面旋回。在此基础上对目的层的沉积微相进行了划分和识别,对三角洲前缘亚相的砂体形态、分布情况进行了系统研究,建立了一整套密井网测井曲线沉积微相识别方法,共识别出水下分流河道、主体席状砂、非主体席状砂、河口砂坝和水下分流河道间5个微相。在精细的地层划分对比和沉积微相研究基础上,对储层的非均质性进行了系统的分析,总结了储层的平面非均质性、纵向非均质性和层间非均质性特征、分布以及影响因素,为剩余油分布规律及主控因素研究奠定了基础。综合运用岩心、测井、生产动态等资料,结合层序地层学、沉积微相、储层非均质性等的研究,从宏观分布的角度总结了研究区平面和垂向的7种剩余油类型,分析了沉积微相、微构造和储层非均质性对剩余油的控制作用,以及各个小层的剩余油平面和纵向的剩余油分布影响因素。在剩余油类型及主控因素分析的基础上,对L8-JP182井区高II1-18小层的剩余油的分布规律进行了系统分析,认为平面上剩余油的富集主要受沉积微相和储层非均质性的控制,纵向上可以分为顶部富集型、均匀驱替型和底部富集型3种富集规律。
[Abstract]:Most oil fields in China have entered the stage of high water cut and high recovery. Especially, the average water cut in Lamadian area of Daqing Oilfield, which has been developed for more than 40 years, has exceeded 90 percent, so it is of great significance to study the distribution law of remaining oil for further development and adjustment of oil field. Guided by high resolution sequence stratigraphy and reservoir sedimentology, this paper makes systematic high frequency isochronous sequence stratigraphic classification and correlation of high II1-18 stratigraphy in L8-JP182 well area of Lamadian Oilfield. The target layer is divided into 1 long term datum cycle, 3 mid term datum cycle and 8 short term datum cycle. On this basis, the sedimentary microfacies of the target layer are divided and identified. The sand body morphology and distribution of the delta front subfacies are systematically studied, and a set of methods for identifying sedimentary microfacies of the dense well logging curve are established. There are five microfacies between underwater distributary channel, main sheet sand, non-main sheet sand, estuary bar and underwater distributary channel. On the basis of fine stratigraphic division and correlation and study of sedimentary microfacies, the reservoir heterogeneity is systematically analyzed, and the characteristics, distribution and influence factors of reservoir plane heterogeneity, longitudinal heterogeneity and interlayer heterogeneity are summarized. It lays a foundation for the study of residual oil distribution law and main controlling factors. Based on the data of core, logging and production performance, combined with the study of sequence stratigraphy, sedimentary microfacies and reservoir heterogeneity, seven types of remaining oil in the plane and vertical direction of the study area are summarized from the point of view of macroscopic distribution. The controlling effects of sedimentary microfacies, microstructures and reservoir heterogeneity on residual oil, and the factors affecting the distribution of residual oil in each sublayer in plane and longitudinally are analyzed. Based on the analysis of residual oil types and main controlling factors, the distribution law of residual oil in high II1-18 layers in L8-JP182 well area is systematically analyzed. It is considered that the enrichment of residual oil on the plane is mainly controlled by sedimentary microfacies and reservoir heterogeneity. Vertically, there are three types of enrichment: top enrichment, homogeneous displacement and bottom enrichment.
【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】：P618.13;TE327

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