X71试验区扶杨油层储层建模及数值模拟研究

发布时间：2018-05-17 16:10

本文选题：超前注水 + 裂缝与井网优化　；参考：《东北石油大学》2015年硕士论文

【摘要】：低渗透油藏具有储层致密、渗流阻力大、储量动用程度低等特点,因此如何合理开发低渗透油藏,取得良好的开发效果和经济效益,已经成为我国维持石油工业稳定发展的重要问题之一。X71试验区扶杨油层属于低渗透油藏,已投入生产3年,为了确定试验区合理开发方案,本文分别从开发井网优化、压裂与井网匹配优化、合理开发技术政策等方面进行了数值模拟研究;根据合理开发方案的各参数要求,对现井网开发方案进行了适应性评价并对其不足之处进行了相应调整;最后对合理开发方案的开发效果进行了预测。本文在数值模拟过程中,采用了局部网格加密的方法模拟人工裂缝的长度、导流能力等参数,应用“门限压力”关键字模拟启动压力的存在。在方案设计过程中,开发井网优化分别从不同布井方案(不同井距、排距)、不同注水方式(反九点法面积注水、五点法面积注水、线性注水)研究合理的井网密度和注水方式;压裂与井网匹配优化时,分别从井排方向与人工裂缝方向、裂缝长度两方面研究匹配关系;研究超前注水政策时,分别从合理配注强度、地层压力保持水平、合理注采比和采油速度4个方面进行技术界限的确定。本文对试验区合理开发方案的研究,不仅为扶杨油层的开发提供了理论依据和技术经验,更对油田产量后续接替,可持续发展具有重要意义。
[Abstract]:Low permeability reservoirs are characterized by tight reservoir, large percolation resistance, low reserve production degree and so on. Therefore, how to develop low permeability reservoir reasonably and obtain good development effect and economic benefit, Fuyang reservoir, one of the important problems in maintaining the stable development of petroleum industry in China, has been put into production for 3 years. In order to determine the reasonable development plan of the test area, this paper optimizes the well pattern from the development well pattern. The numerical simulation of fracturing and well pattern matching optimization, reasonable development technology policy and so on is carried out, and the adaptability evaluation of existing well pattern development scheme is carried out according to the requirements of each parameter of reasonable development scheme and the corresponding adjustment is made to its shortcomings. Finally, the development effect of reasonable development scheme is forecasted. In the process of numerical simulation, the local mesh encryption method is used to simulate the parameters of artificial crack length and diversion ability, and the threshold pressure keyword is used to simulate the existence of starting pressure. In the process of scheme design, the reasonable well pattern density and water injection mode are studied from different well layout schemes (different well spacing, row spacing, different water injection methods (anti-nine-point area water injection, five-point area water injection, linear water injection) respectively). In the optimization of fracturing and well pattern matching, the matching relationship is studied from two aspects, namely, well row direction and artificial fracture direction, fracture length, and rational injection intensity and formation pressure level. Reasonable injection-production ratio and oil recovery speed are determined in four aspects. In this paper, the reasonable development plan of the test area not only provides the theoretical basis and technical experience for the development of Fuyang reservoir, but also plays an important role in the follow-up of oil field production and sustainable development.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE348

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