1) pseudo-linear flow
拟线性渗流
2) non-linear flow
非线性渗流
1.
Using the natural low permeability reservoir rocks and formation water and oil from Shengli Oilfield,the starting pressure and non-linear flow laws of water and oil at irreducible water saturation we.
利用胜利油田天然低渗岩心、产出水及现场脱气原油配制的模拟油,测定了单相水及束缚水饱和度下油的启动压力及非线性渗流规律,回归得到了启动压力梯度与岩石气测渗透率和流体粘度比值的关系。
2.
From the solution of the displacement formula,is compared with the linear flow,it is seen that the displacement efficiency of non-linear flow is lower,the water cut is higher wi.
根据岩心实验提出了两参数的非线性渗流方程,并在此基础上结合Buckly-Leverett方程建立了非线性非混相驱替方程。
3) non-linear seepage
非线性渗流
1.
This doctoral dissertation is pertaining to the research subject concerning the non-linear seepage mechanism in low permeability incompetent rock, which is supported by National Science Fund of China.
低渗透岩石非线性渗流机理及其数值计算方法的研究是当前渗流力学研究的一个前沿课题,对水利工程、石油工业、矿山开采、废料填埋等国民生产有着重要的意义。
4) nonlinear percolation
非线性渗流
1.
Based on the percolation features of low permeability reservoir,the continuous model of nonlinear percolation was put forward,the formulas of pressure distribution and calculating productivity for steady-state flow are derived,and the formulas of pressure distribution and moving boundary spreading for unsteady-state flow are also derived with integral method.
根据低渗油藏渗流特征,提出了非线性渗流连续模型,在此基础上推导了稳态渗流压力分布公式和产量计算方法,用积分法得到了非稳态渗流压力分布和动边界传播规律的公式。
5) nonlinear seepage
非线性渗流
1.
Based on the nonlinear seepage formula,a numerical model of seepage in waste dump is established.
以非线性渗流的普遍表达式建立排土场渗流数学模型,针对排土场渗流特点编制了有限元法计算程序。
2.
In allusion to the nonlinear seepage problem that turbulent flow,transition flow laminar flow coexist with the movement of airflow in a goaf,combined with finite element method,an iterative algorithm to solve nonlinear seepage equation based on Darcy seepage with variable permeability is presented.
针对冒落采空区风流移动同时存在紊流、过渡流、层流的非线性渗流问题,结合有限元方法,提出以变渗透系数的达西(Darcy)渗流反复迭代求得非线性渗流。
3.
The single well pumping was considered in elastoplatic porous stratum in the case of nonlinear seepage coupling.
在非线性渗流耦合的条件下 ,研究弹塑性多孔地层中单井抽放问题。
6) nonlinear flow
非线性渗流
1.
Analysis of pressure of nonlinear flow through low-permeability reservoir with vertically fractured well producing;
垂直裂缝井开发低渗油藏非线性渗流压力分析
2.
The observed start-up pressure gradient is derived through processing experimental data,and the power function of start-up pressure gradient and permeability in low permeability reservoir is obtained,when considering the nonlinear flow function of start-up pressure gradient.
通过对实验数据的处理得到了实测的启动压力梯度;依据启动压力梯度的非线性渗流方程,得到了低渗透储层启动压力梯度与渗透率的幂函数关系式。
3.
Methods of experiment,theory and calculation were used to establish a new nonlinear flow law.
采用实验、理论与计算相结合的方法建立低渗透孔隙-裂隙介质气体非线性渗流运动方程。
补充资料：非线性最小二乘拟合
分子式：
CAS号：
性质：用最小二乘法拟合非线性方程。有些变量之间的非线性模型，通过变量变换可以化为线性模型，此称为外在线性。而有些变量之间的非线性模型，通过变量变换不能化为线性模型，通称为内在非线性。对于非线性模型y=f(ξ,θ)+ε，其残差平方和。S(θ)是θ的函数，当模型关于θ是非线性的，正规方程关于θ也是非线性的。基于使残差平方和s(θ)达到极小的原理求出θ的估计值，拟合非线性回归方程。
CAS号：
性质：用最小二乘法拟合非线性方程。有些变量之间的非线性模型，通过变量变换可以化为线性模型，此称为外在线性。而有些变量之间的非线性模型，通过变量变换不能化为线性模型，通称为内在非线性。对于非线性模型y=f(ξ,θ)+ε，其残差平方和。S(θ)是θ的函数，当模型关于θ是非线性的，正规方程关于θ也是非线性的。基于使残差平方和s(θ)达到极小的原理求出θ的估计值，拟合非线性回归方程。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条