瓦窑堡油田屈家沟油区延长组地质研究

发布时间：2018-06-26 22:54

本文选题：鄂尔多斯盆地 + 延长组　；参考：《西安石油大学》2015年硕士论文

【摘要】：本文以鄂尔多斯盆地屈家沟地区现有勘探开发资料为基础,充分吸收前人研究成果,以沉积学基本原理为指导,综合利用地球物理、地球化学等多种研究方法,结合野外露头、岩心分析、钻测井资料,系统研究了屈家沟油区延长油层组区域地层、构造现状、精细对比区域标志层,重点研究了长4+52、长61两个有油气显示的油层,为油田开发做好地质准备。通过分析本区岩石类型、测并曲线、砂体平面分布形态,砂体分布规律与沉积相类型,配合储集层的岩石性质和物性特征以及油藏类型和控制因素,综合分析油气聚集规律,总结出储层沉积微相与非均质性之间的关系。通过岩心观察、岩石薄片镜下鉴定结果分析,并结合前人研究成果,综合分析研究区油层组的岩石类型、填隙物特征、孔隙结构特征、结构特征,以及主要成岩作用类型及储层物性特征进行深入全面的分析。综合分析研究区储层渗透率的韵律变化情况、储层非均质性参数类型、层内夹层电性特征等,并进行平面非均质性特征研究,在此基础上实现储层分类与综合评价。其中长4+52和长61是一类和二类储层,主要发育在分流河道砂中,物性较好,砂体厚度大,有效储层厚的储层中。最后用容积法计算出该区长4+52、长61油层石油地质储量469.9×104t,叠合含油面积21.04km2。
[Abstract]:Based on the existing data of exploration and development in Qujiagou area, Ordos Basin, this paper fully absorbs the previous research results, takes the basic principles of sedimentology as a guide, synthetically utilizes various research methods such as geophysics and geochemistry, and combines outcrops in the field. Based on core analysis and logging data, this paper systematically studies the regional formation, the present situation of structure and fine correlation regional marker of Yanchang formation in Qujiagou oil area, with emphasis on the study of two oil-gas reservoirs, Chang4,52 and Chang61. Make geological preparations for oil field development. By analyzing the rock types, measuring and merging curves, the plane distribution morphology of sand bodies, the distribution law of sand bodies and sedimentary facies, and combining with the rock and physical properties of reservoir, reservoir types and controlling factors, the oil and gas accumulation law is comprehensively analyzed. The relationship between sedimentary microfacies and heterogeneity is summarized. Through the core observation, the analysis of the identification results under the microscope, and combining with the previous research results, the rock types, the characteristics of the interstitial matter, the pore structure characteristics of the reservoir formation in the study area are comprehensively analyzed. The main diagenesis types and reservoir physical characteristics are analyzed thoroughly. The rhythmic variation of reservoir permeability, the types of reservoir heterogeneity parameters and the electrical characteristics of interlayer in the study area are comprehensively analyzed, and the characteristics of planar heterogeneity are studied. On this basis, reservoir classification and comprehensive evaluation are realized. Chang452 and Chang61 are one and two types of reservoirs, mainly developed in distributary channel sand with good physical properties, large sand body thickness and effective reservoir thickness. Finally, the volume method is used to calculate the petroleum geological reserves of 4 52 and 61 reservoirs in this area, and the superimposed oil bearing area is 21 04 km 2.
【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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