大庆油田宋芳屯芳135区块葡萄花油层油水分布规律及控制因素研究

发布时间：2018-03-06 00:20

本文选题：宋芳屯油田　切入点：葡萄花油层　出处：《东北石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：宋芳屯油田位于松辽盆地的北部区域,地处三肇凹陷中央的基岩突起带上,由于研究区受断层分割性作用明显,导致了研究区的油水分布复杂,要想在研究区进行有利区块的优选,必须对研究区的油水分布规律和控制因素进行研究。本文综合利用岩心、测井、地震等地质资料,并且结合前人对葡萄花油层的研究成果,对研究区进行了精细的构造解释,对研究区的圈闭和断层做出了新的认识;建立起研究区的高分辨率地层等时格架,并且利用储层反演技术,建立起一类连续水下分流河道、二类连续水下分流河道、主体席状砂、道间砂、薄层席状砂、断续水下分流河道、分流间泥7种沉积微相模式,绘制出研究区的小层砂体厚度图9张,总结出砂体的平面展布特征以及垂向演化规律;在对全区油水解剖的基础上,总结出3种油藏类型:断块油藏、断层岩性油藏、岩性油藏;油水分布在平面上具有分带的特征,平面上从西到东依次为凹陷油水复合带、斜坡区油水过渡带、构造富油带;垂向上受断层分割影响,全区无统一的油水界面;研究区的构造特征控制着油水的分布,整体上符合高部位含油、低部位含水的分布规律;研究区内的连续水下分流河道微相,为主要的油气聚集区,当砂地比大于0.4的地层为油气的优良储层;此外断砂匹配也对油水分布有一定的控制作用,当研究区的断层和砂体走向方向呈高角度相交时,油气聚集效果较好。
[Abstract]:The Songfangtun Oilfield is located in the northern part of Songliao Basin, located in the bedrock protruding zone in the center of Sanzhao Sag. Due to the obvious effect of fault division in the study area, the distribution of oil and water in the study area is complicated. In order to select favorable blocks in the study area, it is necessary to study the distribution law and control factors of oil and water in the study area. In this paper, the core, well logging, seismic and other geological data are synthetically used, and combined with the previous research results of the Putaohua reservoir. Fine structural interpretation of the study area, new understanding of traps and faults in the study area, establishment of an isochronous framework of high-resolution strata in the study area, and establishment of a class of continuous underwater distributary channels using reservoir inversion techniques, Two kinds of continuous underwater distributary channel, including main sheet sand, interchannel sand, thin sheet sand, intermittent underwater distributary channel and 7 sedimentary microfacies models of interdistributary mud, are plotted out in 9 charts of the thickness of small layer sand body in the study area. On the basis of dissection of oil and water in the whole area, three reservoir types are summarized: fault block reservoir, fault lithologic reservoir, lithologic reservoir, oil and water distribution on the plane with zonation. From the west to the east, the concave oil-water composite zone, the oil-water transition zone of the slope area, the structural oil-rich zone, the vertical influence of fault segmentation, and no unified oil-water interface in the whole area, the structural characteristics of the study area control the distribution of oil and water, and the distribution of oil and water is controlled by the structural characteristics of the study area. As a whole, it accords with the distribution law of oil content in high position and water cut in low part, the microfacies of continuous underwater distributary channel in the study area is the main oil and gas accumulation area, and the reservoir with sand land ratio greater than 0.4 is an excellent reservoir of oil and gas. In addition, sand fault matching also controls the distribution of oil and water to some extent. When the fault and sand body strike direction intersects at high angles, the oil and gas accumulation effect is better.
【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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