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低渗透油藏渗流机理及开发技术研究 【作者】邱勇松 【导师】黄延章

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#yJA[W p,`0低渗透油藏渗流机理开发技术研究

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作者】邱勇松 【导师】黄延章水利论文%Y?|{h*QG,o
【作者基本信息】中国科学院研究生院(渗流流体力学研究所),流体力学,2004年,博士

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【中文摘要】 本文是基于低渗透和特低渗透油藏在开发中所面临的实际问题,在总结前人已有成果的基础上,对低渗透油藏的渗流机理和开发技术进行了研究,完成了以下研究工作: 1、理论研究。本文利用相似理论和量纲分析方法,研究了流体在低渗透和特低渗透油藏中流动的渗流规律。建立了特低渗透储层流体渗流的运动方程,确定了低速非达西渗流的临界条件。推导出油层启动压力梯度、见水时间和采油速度与注采井距的关系。 2、应用研究。结合低渗透和特低渗透油田流体的渗流机理和一些新的实验手段(诸如:恒速压汞测试、扫描电镜、常规压汞、核磁共振等),提出低渗透储层评价的室内实验新方法。给出低渗透或特低渗透储层可动资源量的评价方法。并研究它与驱油效率和储层类型的关系。 3、提高采收率的研究。全面系统地总结了提高特低渗透油田采收率的各种方法。(1)通过活性水的室内实验和油藏数值模拟系统地研究了活性水的驱油机理。(2)通过室内实验、油藏工程和数值模拟的方法,研究了注入水中的水质对特低渗透油藏注入压力、地层伤害、产能和井网部署的影响。(3)推导出提捞采油的经济极限产量、含水公式、动液面拟合模型、供液能力和捞油产量拟合模型。(4)研究了适合特低渗...更多透油田的压裂工艺技术,分析压裂液伤害机理及减少伤害的途径,优化了压裂施工参数,为特低渗透油田进行压裂改造提供理论指导。  还原

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$F(F"K+L_] `0【英文摘要】 A comprehensive study has been made on the problems of low permeability reservoir. This dissertation presents the development of a study on percolation mechanism of low permeability reservoir and recovery technology.The specific tasks achieve in this work include the following:1. Theory study of flow through the low-permeability porous media has been made by utilizing similarity theory and dimensional analysis in this thesis. The equations of motion about flow through very low permeability porous media are established. A critical condition has been modeled to describe low velocity non-Darcy flow in porous media. The equations among start-up pressure gradient, water breakthrough time, oil recovery rate and injector-producer distance are established.2. Some new shop experimental methods of low permeability reservoir evaluation have been offered in this dissertation by combining percolation mechanism of low permeability reservoir and some new experimental methods such as constant velocity...更多 mercury penetration experiment, scanning electron microscopy experiment, conventional mercury penetration experiment, NMR, etc. A method of removable reserves of low permeability reservoir is given to make evaluation. The relation between this evaluation method and displacement efficiency is studied in this thesis.3. The third part of this research is focus on how to enhance oil recovery(EOR). (1) Oil-displacement mechanism of activity water is studied by utilizing shop experiment of activity water and numerical reservoir simulation. (2) The influence of water quality on injection pressure, stratum damage, productivity and well pattern designing of very low permeability reservoir is studied by shop experiment, petroleum reservoir engineering and numerical simulation. (3) Economic production rate limit of bailing recovery and containing water formula have been given. Dynamic liquid level fitted model, feed flow ability and bailing recovery production rate fitted model are also given in this thesis. (4) Hydraulic fracturing technology being suitable to very low permeability reservoir is discussed. Damage mechanism of fracturing fluid and methods of reducing damage has been developed to optimize the parameters of hydraulic fracturing treatment. This dissertation presents an academic basis for the hydraulic fracturing improvement of a very low permeability reservoir.  还原

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【中文关键词】 低渗透; 渗流机理; 储层评价; 采收率; 数值模拟
G'c`/V ?0【英文关键词】 low permeability; percolation mechanism; reservoir evaluation; recovery efficiency; numerical simulation

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TAG: 机理 技术 开发 渗流 油藏
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