葡北油田A区葡I油层组单砂体精细解剖及建模

发布时间：2018-03-22 00:20

本文选题：单砂体　切入点：夹层　出处：《东北石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：葡北油田位于黑龙江省大庆市南部,位于大庆长垣背斜的南边,属于葡萄花构造带。葡北油田已进入油田开发后期,单井产液量大但含水较高,同时注采关系比较严峻,层间非均质性严重,这就需要我们对葡北油田储层特征进行重新认识,尤其需要对单砂体进行详细描述,重新认识单砂体内部夹层发育情况。通过对单砂体及其内部夹层的重新认识,为油田开发后期挖潜措施的制定,注采关系的调整提供准确的静态数据支持。本次论文研究以葡北油田A区为目标区,葡I油层组为目的层,进行单砂体精细解剖,同时运用随机建模技术对井间夹层发育情况进行预测。此次研究以测井资料及岩心资料为基础,以测井地质学、沉积岩石学、石油地质学、现代油藏地质学、地质统计学为理论依据。首先从垂向和平面上,对研究区单砂体进行精细识别,在垂向上通过泥质层与钙质层进行识别,在平面上通过河道间沉积、砂体发育高程差、河道砂体发育厚度变化、根据测井曲线韵律性等进行识别。再根据研究区沉积背景,结合测井资料,建立研究区测井相模式,研究单砂体剖面相与平面相特征,通过研究共识别出9种沉积微相,在此基础上,对单砂体垂向叠置关系进行研究,分为分离式、叠加式、切叠式。然后通过岩心观测和测井识别,对单砂体内部夹层特征进行分析,在研究区共识别出3种类型夹层:泥质夹层、钙质夹层、物性夹层。最后,结合前期所有研究成果,运用Petrel建模平台,建立研究区构造模型与相模型,运用序贯指示模拟算法,预测井间夹层发育情况。通过后验井验证及概率分布一致性检验,随机模型符合率达80%以上,概率分布与原始相模型也基本保持一致。
[Abstract]:The Pubei Oilfield is located in the south of Daqing City, Heilongjiang Province, and is located in the south of Daqing anticline, belonging to the Puhua structural belt. Pubei Oilfield has entered the late stage of oilfield development, with large liquid production and high water cut per well, and the relationship between injection and production is severe. The heterogeneity between layers is serious, which requires us to re-understand the reservoir characteristics of Pubei Oilfield, especially to describe the single sand body in detail. Through the new understanding of single sand body and its inner intercalation, the measures for tapping potential in the later stage of oilfield development are formulated. The adjustment of injection-production relationship provides accurate static data support. In this paper, the fine anatomy of single sand body is carried out in the area A of Pubei Oilfield as the target area and the reservoir formation of Portugal I as the target layer. At the same time, random modeling technology is used to predict the interlayer development between wells. This study is based on logging data and core data, and is based on logging geology, sedimentary petrology, petroleum geology, modern reservoir geology, and so on. Geostatistics is the theoretical basis. First of all, the single sand body in the study area is identified from vertical and plane, then vertically through the muddy layer and calcium layer, and on the plane through the interchannel deposition. According to the sedimentary background of the study area and well logging data, the logging facies model of the studied area is established, and the characteristics of the single sand body profile and plane facies are studied. Nine kinds of sedimentary microfacies were identified. On this basis, the vertical superposition relation of single sand body was studied, which can be divided into separate type, superposition type, tangential type, and then through core observation and log recognition, The characteristics of intercalation in single sand body are analyzed, and three types of intercalations are identified in the study area: muddy intercalation, calcareous intercalation and physical intercalation. Finally, combined with all previous research results, Petrel modeling platform is used. The structural model and phase model of the studied area are established, and the interlayer development between wells is predicted by using sequential indicator simulation algorithm. The coincidence rate of random model is over 80% through the verification of a posteriori well and the consistency test of probability distribution. The probability distribution is basically consistent with the original phase model.
【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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