牛庄油田牛25-C沙三低渗油藏有效注水开发效果评价

【作者】 周科；

【导师】 唐海；

【作者基本信息】 西南石油大学 ， 油气田开发工程， 2010， 硕士

【摘要】 低渗油田储量的开发已成为我国陆上石油工业稳定发展的重要潜力。牛庄油田牛25-C沙三油藏是一个典型低饱和程度、异常高压、中孔低渗,中低丰度的深层油藏,其开发动态明显优于胜利油区的其他类似油藏。因此,认清牛25-C沙三油藏开发动态主体控制因素,不仅可以进一步改善牛25-C沙三油藏开发效果,而且可为类似油田的开发提供指导依据。本文在认清了牛25-C沙三油藏储层特征基础上,结合储层渗流与岩石力学实验,围绕低渗油藏注水开发渗流理论,开展了系统的油藏合理开发技术界限、开发动态分析评价及开发指标优化研究工作,取得的主要成果有：1)牛25-C沙三油藏良好的储层条件与流体特性是油藏获得高效开发动态与效果的客观地质基础。2)尽管油藏存在应力敏感和渗流启动压力梯度等不利因素,但对牛25-C沙三油藏的高效开发不构成威胁。3)与储层地质和渗流特征相匹配的工程条件和恰当的开发模式、技术政策是油藏获得高效开发动态与效果的主要原因。注采井网对地层有较好的适应性,能量利用与注采对策合理。4)合理的水动力调整对策及其他配套技术是油藏获得高效开发动态与效果的保障。更多还原

【Abstract】 The development of low-permeability oil reserves has become the important potential for stable development of China’s oil industry.Niu25-C sand 3 reservoir of Niu zhuang Oilfield is a typical low saturation levels,abnormal high pressure,medium porosity,low permeability, low abundance and Greater depth reservoir. Its development dynamics is much better than other similar oil reservoirs of Shengli Oilfield.Therefore,the main controlling factors of develop dynamic for Niu25-C sand 3 reservoir,can not only further improve the development effect of Niu25-C sand 3 reservoir,but could provide guidance for the development of similar oil fields.On the basis of recognize reservoir characteristics with Niu25-C sand 3 reservoir, Combination of reservoir seepage flow and rock mechanics experiment,Surrounding the filtration theory of waterflooding development for low-permeability reservoir this paper carried out a systematic technical limits of oil reservoir rational development, Analysis and Evaluation of development dynamic and optimizing development index of research work,achieved the main results are:1)Good reservoir conditions and fluid properties of Niu25-C sand 3 reservoir is the objective geological basis to obtain high efficient development dynamics and effects.2) Despite the existence of stress-sensitive,seepage threshold pressure gradient and other unfavorable factors,But is not a threat for high efficient development of Niu25-C sand 3 reservoir3)Engineering conditions,appropriate development model,and technology policy what match with the geologic and seepage characteristics are main reasons for the. injection-production pattern is better adaptability of the layer,injection-production strategy and energy utilization are rational.4) A reasonable hydrodynamic adjustment measures and other supporting technologies are guarantee for the high efficient development dynamics and effects of reservoir.更多还原