非达西渗流系数,non-Darcy flow coefficient
1)non-Darcy flow coefficient非达西渗流系数
2)non-Darcy flow非达西渗流
1.Mechanism of gas non-darcy flow in low permeability reservoirs;低渗储层中气体非达西渗流机理
2.Fully implicit simulation model for low-velocitynon-Darcy flow;低速非达西渗流的全隐式模拟模型
3.Several Propositions about Theory Solution of Moving Boundary Model Non-darcy Flow through Low Permeability Reservoir;低渗透非达西渗流动边界模型理论解的几个命题
英文短句/例句
1.Development of Numerical Simulation System for Non-Darcy Flow in Low Permeability Reservoir;低渗油藏非达西渗流数值模拟系统研制
2.The Numerical Method of Modeling Non-Darcy Flow in Low Permeability Medium and Its Application;低渗透介质非达西渗流数值模拟方法及应用
3.Research on 2-D Non-Darcian Flow with Finite Element Method;二维非达西渗流有限元分析方法研究
4.Integral fracturing optimization design of non-Darcy flows in low and ultra-low permeability oil reservoirs低渗透、特低渗透油藏非达西渗流整体压裂优化设计
5.All the four models are suitable for describing the non-Darcy seepage behavior of Xiaoshan clay.性种非达西渗流模型对于萧山黏土的渗流特性研究都是适用的。
6.Dynamic characteristics analysis of non-Darcy flow with high velocity in preferred flowing path优势渗流通道中的高速非达西渗流动态特征分析
7.A High Velocity Non-Darcy Flow Model Considering Real Gas PVT Behavior考虑真实气体PVT动态的高速非达西渗流模型
8.Investigation of effective drive theory on Non-Darcy with low permeability in Fuyu oil reservoirs葡南扶余油层非达西渗流有效驱动理论
9.Pressure responseof triple-porosity-media oil reservoirs with high-velocitynon-Darcy flow高速非达西渗流时三重介质油藏的压力响应
10.Several Propositions about Theory Solution of Moving Boundary Model Non-darcy Flow through Low Permeability Reservoir;低渗透非达西渗流动边界模型理论解的几个命题
11.Formation pressure calculation and analysis of low permeability reservoir with non-Darcy flow低渗透油藏非达西渗流地层压力计算方法及分析
12.Optimization method of hydraulic fracturing horizontal wells with extra-low permeability in Daqing Aonan oil reservoirs大庆敖南特低渗油层非达西渗流压裂水平井优化技术
13.Criterion of starting pressure gradient existence of non-Darcy flowing in low permeability porous media低渗多孔介质非达西渗流启动压力梯度存在判识
14.Fluid flowing barrier extends outwards continuously, which is a feature of pressure propagation in low velocity nondarcy percolation.流体流动边界不断向外扩展是低速非达西渗流压力传播的特点。
15.Finally by means of capillary bundle model, the empirical equation is given to describe the non-Darcy filtration features in single facies fluid of low permeability oil reservoirs.最后通过毛管束模型给出了描述低渗透油藏单相流体非达西渗流特徵的经验方程。
16.Effect of High Velocity Non-Darcy Flow on Productivity in Wormhole of Unconsolidated Sandstone Reservoirs疏松砂岩油藏大孔道中高速非达西渗流对产能的影响分析
17.Fluid flowing barrier extends outwards continuously is a feature of pressure draw-down test model with low velocity nondarcy percolation.流体流动边界不断向外扩展是低速非达西渗流压力降落试井模型的特点。
18.The analysis and calculation using such specific solution discovers some important dynamic behaviour for well testing model of low velocity nondarcy percolation.应用这种特殊求解方法进行分析计算，发现了低速非达西渗流试井模型的一些重要动态特征。
相关短句/例句
non-Darcy flow非达西渗流
1.Mechanism of gas non-darcy flow in low permeability reservoirs;低渗储层中气体非达西渗流机理
2.Fully implicit simulation model for low-velocitynon-Darcy flow;低速非达西渗流的全隐式模拟模型
3.Several Propositions about Theory Solution of Moving Boundary Model Non-darcy Flow through Low Permeability Reservoir;低渗透非达西渗流动边界模型理论解的几个命题
3)non-Darcy seepage非达西渗流
1.Laboratorial study onnon-Darcy seepage in Xiaoshan clay;萧山黏土非达西渗流性状的试验研究
2.Nonlinear dynamic analysis onnon-Darcy seepage in over-broken rock mass;破碎岩体非达西渗流的非线性动力学分析
3.Low-permeability formations will be encountered during gas drilling,the formation liquid will flow into the well as low-speednon-Darcy seepage.气体钻井过程中会遇到低渗透地层,地层液体的侵入遵循低速非达西渗流规律,用基于达西渗流建立的传统预测模型来计算气体钻井过程中低渗透地层液体的侵入量将会产生较大误差。
4)non darcy percolation非达西渗流
1.Numerical model of low velocity non Darcy percolation for fractal reservoir has been set up according to fractal geometry and non Darcy percolation mechanics.根据分形几何学并结合非达西渗流力学 ,建立了分形油藏低速非达西渗流的数学模型。
5)non-Darcy percolation非达西渗流
1.This paper elaborates the mechanism of low velocitynon-Darcy percolation in aspects of pore structure, interaction between porous medium and percolation fluid, and fluid property, and discusses pore size, pore throat geometric structure, the relationship of specific surface area and permeability, and their impact on starting pressure.从多孔介质的孔隙结构、孔隙介质与渗流流体之间的相互作用和渗流流体性质等方面阐述了低速非达西渗流产生机理的不同观点,探讨了孔隙大小、孔隙喉道的几何结构、比表面积与渗透率的关系及其对启动压力的影响。
2.Thus a mathematical model and a numerical model are established fornon-Darcy percolation of deformed medium formation , for which a so.低渗油藏液体渗流存在一定启动压差,即只有当压力梯度超过某一阀值后液体才开始流动,其渗流规律不满足达西定律,通常存在着启动压力梯度阀值和地层绝对渗透率随地层压力动态变化的现象,为此建立了变形介质地层低渗非达西渗流的数学模型与数值模型;研制出了变形介质低渗非达西渗流的油藏数值模拟软件,它能模拟其他油藏数值模拟软件不能有效模拟的地层绝对渗透率动态变化和渗流规律不满足达西定律的油水两相三维渗流问题。
6)non-Darcy flow coefficient非达西流动系数
延伸阅读
达西渗流定律流体在多孔介质内运动的基本规律，也是从宏观角度描述渗流过程的统计规律。这个定律是1856年法国水利工程师H.-P.-G.达西为解决水的净化问题从大量实验中总结出来的。达西对水通过均匀砂层的缓慢流动作了大量实验,研究表明：单位时间流过砂层的体积流量Q与横截面积A、测压管水头差h1-h2成正比,与流过的砂层长度L成反比：式中Q/A=v为渗流速度;(h1-h2)/L=J为水力坡度。上式也可写成： v＝KJ， (1)式中 K为标志渗流能力大小的实验常数，称为渗透系数。它既与砂层的结构有关，又与流过的流体性质有关。由量纲分析知，,其中ρ、μ分别为流体的密度和动力粘性系数；g为重力加速度；k称为介质的渗透率。式(1)又可写作： 。 (2)式(1)或式(2)都是达西渗流定律，它表示渗流速度与水力坡度呈线性关系，故称达西线性渗流定律。实验发现,随着雷诺数Re的增加,多孔介质中的流动状态经历三个区域：①线性层流区：粘性力占优势，达西定律成立,上限约在Re=10左右；②非线性层流区（过渡区）：为主要被惯性力制约的层流，达西定律不成立，上限约在Re=100左右，在上限附近开始有层流到湍流的过渡；③湍流区：惯性力占优势，达西定律不成立。由此可见，从上限雷诺数方面偏离达西定律与层流到湍流的过渡不是完全等价的。在渗流速度很低时，流体与介质间的表面分子力作用显得更为重要。部分液体的滞流现象使孔隙度发生变化，从而引起渗透率的相应变化。实验表明，这时孔隙度和渗透率均随渗流速度的增加而增加，速度到某一临界值后不再变化，因此不遵循达西定律。在雷诺数大于上限Re数的情况下，应该用"渗流的二项式定律"代替达西定律，即J＝Av＋Bv2，式中A、B为决定于流体和介质性质的常数。在雷诺数小于下限Re数情况下，非线性渗流定律的一般形式可写为： ，式中f(J)为小雷诺数情况下渗透率随水力坡度的变化函数关系，由实验确定。以上主要是单相流体达西渗流定律；对于多相流体，达西定律对每一相仍然成立，只需将渗透率修正为该相的相渗透率即可。参考书目J.Bear, DynamicsofFluidsinPorous Media,American Elsevier,New York,1972.
