鄂尔多斯盆地胡尖山地区延9～富县储层特征研究

发布时间：2018-03-04 09:01

本文选题：胡尖山地区　切入点：延9油层组~富县组　出处：《西安石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：侏罗系富县组、延安组作为鄂尔多斯盆地胡尖山地区的增产潜力层位,目前仍存在投产效果与设计方案相去甚远的问题,严重滞缓了该区的增储进程。因此,全面深入地分析胡尖山地区延9~富县储层的宏观及微观特征,不仅为合理滚动开发奠定了基础,同时为迅速提高产能提供了依据。本文选取胡尖山地区399口井,对富县组、延10油层组、延9油层组进行研究。综合利用测井、录井,岩心分析,试油数据等资料,通过对研究层位砂体展布规律、储层岩石学特征、储层物性特征、储层微观孔隙结构特征、成岩作用以及储层非均质性等特征的研究,明确了胡尖山地区储层的基本特征,在此基础上,对研究区储层进行分类评价。胡尖山地区延9~富县组各砂层组的顶面构造继承了单斜构造的特征,由东向西,海拔逐降,常见单斜背景下的鼻隆。富县和延10以辫状河沉积为主,主要沉积微相为河道、心滩和河漫滩;延9是三角洲沉积,主要的沉积微相为分流河道和分流间湾。通过建立延9~富县组物性解释模型,回归出孔隙度与渗透率之间的对应关系,并标定了延9~富县储层下限标准。储层岩性以岩屑长石砂岩为主;孔隙类型以溶蚀粒间孔和残余粒间孔为主,孔喉分选中等;孔隙度主要分布在15%~18%之间,渗透率主要分布在1~50×10-3μm2之间;非均质性强,成岩阶段属于中成岩A期。根据孔隙结构、孔喉特征、物性特征等,制定了胡尖山地区延9~富县储层类别划分标准,将储层分为四类;研究区延9~富县储层以II类储层为主,其中主力层延92+3和延102 I类储层较多。
[Abstract]:The Jurassic Fuxian formation and Yan'an formation, as the potential horizon for increasing production in Hujianshan area of Ordos Basin, still exist the problem that the effect of production is far from the design plan, which seriously slows down the process of increasing reservoir in this area. The macro and micro characteristics of reservoir in Y9 ~ Fu County in Hujianshan area are analyzed comprehensively and deeply, which not only lays a foundation for rational rolling development, but also provides a basis for rapid improvement of productivity. In this paper, 399 wells in Hujianshan area are selected, and the Fuxian formation is studied. Yan 10 reservoir group and Yan 9 reservoir group are studied. Through comprehensive use of logging, logging, core analysis, oil test data, etc., the distribution rule, reservoir petrology characteristics and reservoir physical properties of the reservoir are studied through the study of the distribution law of the reservoir sand body, the reservoir petrology characteristics, the reservoir physical properties, etc. The characteristics of pore structure, diagenesis and heterogeneity of reservoir are studied, and the basic characteristics of reservoir in Hujianshan area are clarified. The top structure of each sand formation of Yan9 ~ Fuxian formation in Hujianshan area inherits the characteristics of monoclinic structure, from east to west, the elevation decreases gradually. In the common monocline background, Beilong. Fuxian and Yan 10 are mainly braided river deposits, the main sedimentary microfacies are river channels, core beaches and floodplain, and Yan 9 is a delta deposit. The main sedimentary microfacies are distributary channel and interdistributary bay. By establishing physical property interpretation model of Yan9 ~ Fuxian formation, the corresponding relationship between porosity and permeability is regressed. The lower limit standard of Yan9 ~ Fuxian reservoir is calibrated. The lithology of the reservoir is dominated by lithic feldspathic sandstone, the pore type is mainly composed of dissolved intergranular pore and residual intergranular pore, and the pore throat is separated moderately, and the porosity is mainly distributed between 15% and 18%. Permeability is mainly distributed in the range of 1 ~ 50 脳 10 ~ (-3) 渭 m ~ (2), heterogeneity is strong, diagenetic stage belongs to middle diagenetic stage A. according to pore structure, pore throat characteristic and physical property characteristic, the classification standard of reservoir type of extension 9 ~ Fuxian in Hujianshan area is established, and the reservoir is divided into four categories. In the study area Yan9 ~ Fuxian reservoirs are mainly of class II reservoirs, among which the main reservoirs of 923 and 102i are more.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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