缝洞型碳酸盐岩凝析气藏生产动态模拟研究

发布时间：2018-04-16 07:47

本文选题：缝洞型 + 碳酸盐岩　；参考：《西南石油大学》2017年硕士论文

【摘要】：碳酸盐岩油气藏在全球范围内广泛分布,而且多为储量规模大、产量高的油气藏。我国于最近十几年来,在塔里木盆地、鄂尔多斯盆地、四川盆地相继发现了大型碳酸盐岩油气田,碳酸盐岩油气田具有良好的开采潜力。但是,碳酸盐岩油气藏储集类型复杂,储集空间多样,包括大型溶洞、溶蚀孔洞、溶蚀孔隙、构造裂缝等,其储集空间以大型洞穴和裂缝为主,同时裂缝又是主要的渗流通道。该类油气藏开采机理和开发方式与常规油气藏存在很大区别。所以深入研究缝洞型碳酸盐岩凝析气藏储渗机理和开采特征,开展生产动态模拟实验,进行实际储层特征或室内实验的流动规律研究,从理论和技术上系统深入地开展缝洞型凝析气藏流动机理以及建立缝洞型凝析气藏生产动态特征分析方法,对于实现缝洞型凝析气藏的高效开发具有重要意义。本文在物理模拟实验的基础上,对缝洞型凝析气藏的流动机理和生产动态进行了研究,主要研究了不同缝洞储集体类型对于流动规律和生产动态的影响,以及注水、注气开发在缝洞型碳酸盐岩凝析气藏中的适用性。分析了单溶洞储集模式下,生产流量与生产压差之间的关系,以及溶洞体积、裂缝长度等参数的影响。开展了单一溶洞-裂缝储集体、多溶洞-裂缝储集体、裂缝-孔洞储集体三种模型下的生产动态物理模拟实验,分析了凝析气产量、凝析油产量、储层压力变化等数据,初步建立了适用于缝洞型储集体的动态分析方法:物质平衡法、水体函数法、现代产量递减法,并分别使用三种方法对实验数据进行了验证计算,验证了其适用性。
[Abstract]:Carbonate reservoirs are widely distributed in the world, and most of them are oil and gas reservoirs with large reserves and high production.In recent years, large carbonate oil and gas fields have been discovered in Tarim Basin, Ordos Basin and Sichuan Basin in China, and carbonate oil and gas fields have good exploitation potential.However, the reservoir types of carbonate reservoirs are complex and the reservoir space is diverse, including large caverns, dissolution pores, dissolution pores, structural fractures, etc. The reservoir space is mainly large caves and fractures, while fractures are the main seepage channels.The production mechanism and development mode of this kind of reservoirs are quite different from those of conventional reservoirs.Therefore, the mechanism of reservoir and permeability and production characteristics of fractured and cavernous carbonate condensate gas reservoirs are deeply studied, and the production dynamic simulation experiments are carried out to study the actual reservoir characteristics or the flow law of laboratory experiments.It is of great significance to develop the flow mechanism of the fracture-cavity condensate gas reservoir and to establish the method of analyzing the production characteristics of the fracture-cavity condensate gas reservoir in theory and technology, which is of great significance for the efficient development of the fracture-cavity condensate gas reservoir.On the basis of physical simulation experiments, the flow mechanism and production performance of fracture-cavity condensate gas reservoirs are studied in this paper. The effects of different reservoir types on flow law and production performance, as well as water injection, are studied.Applicability of gas injection development in fractured and cavernous carbonate condensate gas reservoirs.The relationship between production flow rate and production pressure difference, as well as the influence of cave volume and crack length on single cave reservoir model are analyzed.The production dynamic physical simulation experiments were carried out under the three models of single cavern-fracture reservoir, multi-cave-fracture reservoir and fracture-pore reservoir. The data of condensate gas production, condensate oil production and reservoir pressure change were analyzed.The dynamic analysis methods suitable for the joint-cavern reservoir are preliminarily established: material balance method, water function method and modern production decline method. The experimental data are verified and calculated by using three methods, and the applicability of the method is verified.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE372

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