鄂尔多斯盆地S区延10油藏单井产能评价研究

发布时间：2018-05-18 01:11

本文选题：产能评价 + 延10油藏　；参考：《西安石油大学》2015年硕士论文

【摘要】：鄂尔多斯盆地S区延10油藏是典型的低渗透油层。目前,在S区开发过程中,石油地质认识问题以及开发问题日益突出,为了减少低效井和干井,最大限度的降低风险,就需要优选出合适的产能评价技术和方法,从而来快速确定S区的油气藏富集区的分布和产能的大小,进而指导S区的开发方案部署。本论文以鄂尔多斯盆地S区延10油藏为研究对象,基于研究区地质、岩心、测井和生产动态资料,开展了研究区目的层的地层精细划分与对比、砂顶微构造特征以及砂体展布规律研究、储层非均质性特征研究、测井资料预处理、“四性”关系及测井资料二次解释研究、地应力特征研究、油水层物性下限研究、储层参数分布特征研究以及产能评价。研究表明,研究区延10储层划分为延101和延102两个小层。其中,延101为主力油层,为本论文研究对象;构造呈近南-北向,存在两个构造高点,轴向近东西,东西长约3 km,南北宽约1.5 km,由东向西构造逐渐降低。砂体呈自北东到西南的条带状展布,延展性比较好,平面上连通性好;延101呈现强非均质性,物性较差;延101油藏孔隙度下限为13.5%,油层电阻率大于42?.m,声波时差大于237μs/m,含油饱和度大于53.5%;研究区的孔、渗在平面展布上具有一定的相似性,含油饱和度和构造具有一定的相似性;各向地应力值都是随着深度的增加呈现逐渐变大的趋势,但是随着深度增加,各项应力增加幅度也在发生变化;研究区分别采用产能综合指数法和多元线性回归分析法对产能进行定量预测,并对各预测方法和结果进行分析,各种评价方法各有利弊,所以最后择优选取。本研究的进行和完成,可以极大程度地推动研究区的油气勘探和开发,具有十分重要的理论和现实意义。
[Abstract]:Yan10 reservoir in S area of Ordos Basin is a typical low permeability reservoir. At present, during the development of area S, the problems of petroleum geology cognition and development are becoming more and more prominent. In order to reduce the low efficiency wells and dry wells and minimize the risk, it is necessary to select the appropriate technology and method of productivity evaluation. Therefore, the distribution and productivity of the rich oil and gas reservoir area in S area can be determined quickly, and then the development plan of S area will be guided. Taking Yan 10 reservoir in S area of Ordos Basin as the research object, based on the geological, core, logging and production performance data of the study area, the fine stratigraphic division and correlation of the target layer in the study area are carried out in this paper. The characteristics of sand roof microstructures and the distribution of sand bodies, the study of reservoir heterogeneity, the preprocessing of logging data, the relation of "four properties" and the secondary interpretation of logging data, the study of in-situ stress characteristics, the study of the lower limit of physical properties of oil-water reservoirs, Research on distribution characteristics of reservoir parameters and productivity evaluation. The study shows that Yan 10 reservoir in the study area is divided into two sub-layers: Yan 101 and Yan 102. Among them, Yan 101 is the main reservoir, which is the research object of this paper, the structure is nearly south to north, there are two high points, the axis is close to east and west, the length of east and west is about 3 km, the width of north and south is about 1.5 km, and the structure gradually decreases from east to west. The sand bodies are striped from north to east to southwest with good ductility and good connectivity on the plane, and Yann101 shows strong heterogeneity and poor physical properties. The lower limit of porosity of Yan101 reservoir is 13.5m, the resistivity of reservoir is more than 42? M, the time difference of acoustic wave is more than 237 渭 s / m, and the oil saturation is greater than 53.5. The porosity and permeability in the study area are similar in plane distribution, oil saturation and structure are similar to each other. The in-situ stress values of each direction are gradually increasing with the increase of depth, but with the increase of depth, the range of stress increase is also changing. In the study area, productivity was quantitatively predicted by productivity synthesis index method and multivariate linear regression analysis, and each forecasting method and results were analyzed. Each evaluation method had its own advantages and disadvantages, so the final choice was selected. The progress and completion of this study can greatly promote the exploration and development of oil and gas in the study area, which is of great theoretical and practical significance.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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