Oil well production in non-linear flow model of ultra-low permeability reservoir 特低渗透油田非线性渗流模型下井网产量
Low-speed and non-linear flow through porous media numerical simulation for low-permeability gas reservoir nonlinear harmonic method in unsteady numerical simulation on a low speed axial turbine 低渗透气藏低速非线性渗流数值模拟研究低速轴流涡轮非定常数值模拟的非线性谐波法
Non-linear seepage flow is caused chiefly by medium deformation and threshold pressure gradient ( TPG) in low and ultra-low permeability reservoirs. 启动压力梯度和介质变形是油气在低渗透、特低渗透储集层中渗流规律偏离达西定律的主要原因。
This will introduce you to techniques for creating non-linear and interactive narrative flow. 介绍创作非线性和互动叙述流的技巧。
Study on the Non-Linear Flow in Diesel Particulate Filters 柴油机微粒捕集器通流式过滤体非线性流动研究
Statistical Analysis for Change-Point of Non-linear Regressions Model of Traffic Flow 交通流非线性回归模型的变点统计分析
Generating condition of non-linear flow in water-flooding reservoir at ultra-high water-cut stage 水驱油藏特高含水期非线性渗流产生条件
Application of linear and non-linear turbulent models in spur dike flow 线性与非线性紊流模型及其在丁坝绕流中的应用
The result indicates that non-linear characteristic of flow rate occurs when the capacities of electronic expansion valve and refrigerating system do not match. 试验结果表明,在电子膨胀阀容量与制冷系统容量选型不完全匹配时,电子膨胀阀具有非线性的流量特性。
Two finite element solution methods for linear quadratic interpolation of rectangular subdivision are given for 2-D 2-P ( oil wate) non-linear flow through porous medium, a solution to the development with inverted 9-spot pattern was made based on linear interpolation method and the results were satisfactory. 本文对油水两维两相渗流非线性模型给出了矩形剖分的线性平方插值两种有限元解法,就线性插值方法给出了反九点法注水开发的算例,结果令人满意。
Under the assumption that the permeability varies with the piecewise experimental law of the pressure drop, the equation for steady radial flow and the non-linear equation for transient flow through porous media were derived and solved. 本文基于渗透率随压力呈分段的指数变化规律,建立并求解了平面径向稳定渗流方程和非线性不稳定渗流方程。
The result shows that, comparing with ordinary statistical model and optimum statistical model, it take better forecast precision in the forecast of linear and non-linear seepage flow of the dam. 计算结果表明,与常规统计模型和优化统计模型相比,小波网络模型在大坝线性和非线性特征的渗流预测中都能取得较好的预测效果。
Non-linear network flow programming of reservoir group system 水库群系统非线性网络流规划法
The non-linear infiltration flow on two-dimensional goaf and its solution 二维采空区非线性渗流问题和解法
The example shows that ordinary statistical model is effective in analyzing monitoring data of linear seepage flow, however, when it is less effective in analyzing monitoring data of non-linear seepage flow. 实例分析表明,常规统计模型在分析具有线性特征的渗流的监测资料时,模型很有效,而在分析具有非线性特征的渗流的监测资料时,效果不是很好。
Study on non-linear seepage flow of coal bed methane in low permeability formation 煤层气在低渗透储层中传输非线性规律研究
The Analytic Resolutions and Applications of the Non-LInear Seepage Flow Equations of Coal Infusion 煤层注水非线性渗流方程的解析解及应用
The complex pressure distribution in the model makes the fluid flow computation of horizontal well be fairly complicated, so the non-linear equation describing fluid flow performance has been applied for space iterative computation followed by time iterative computation. 由于所用气藏模型压力分布较为复杂,使得水平井的流动计算变得相当复杂,应用表征流动特性的非线性方程对空间进行迭代计算,再向时间推进。
To the three-tank water, a typically non-linear and delayed plant, the general mathematic model of three-tank water is established by means of mechanism modeling method, and the characteristics of both linear and non-linear weir flow meters are analyzed. 针对三容水箱是较为典型的非线性、时延对象,具有很强的代表性这一特点,通过机理建模方法建立了三容水箱的一般数学模型。
Meantime, the pressure gradient region, which producing the non-linear seepage flow, was calculated. 并确定了产生非线性渗流的压力梯度区域。
Non-linear relationship between pressure drop and flow rate is discovered due to the presence of yield stress. 由于屈服应力的存在,此时的流率与压力差已经不再是简单的线性关系。
The abrasive flow machining technology has provided a reliable and effective solution of improving the quality of the non-linear internal flow surface. 磨粒流加工技术为改善非直线管通道表面质量提供了有效的解决方法。
New model for describing the mechanism of non-linear seepage flow was presented. 建立了新的描述低渗透油藏非线性渗流机理模型。
The non-linear stable flow considering threshold pressure gradient is studied. 研究了考虑启动压力梯度的非线性稳定渗流问题。
Non-linear seepage flow deliverability equation of deformation reservoir was established. The results presented that more serious non-linear seepage flow degree and bigger deformation resulted in lower deliverability. Increasing drawdown will decrease the non-linear effect impact on the seepage flow, and improve the deliverability. 建立了新的变形介质油藏非线性渗流产能方程,结果表明储层非线性渗流的程度越大,介质的形变程度越大,油井的产能越低;在变形介质条件下增大生产压差,油井产能增加。
In the analysis, considering the non-linear change of physical parameters which flow the temperature change and the non-linear of the radiation, the non-linear temperature field and thermal flux was simulated with finite element software. 在热分析中,充分考虑了罐体物性参数随温度变化的非线性、辐射的非线性等因素,进行了鱼雷罐车罐体的温度场、热流通量场和热应力场的非线性有限元模拟。
Compared with Darcy seepage flow, on the condition of non-linear seepage flow, the drawdown is higher; the water cut is bigger; degree of reserve recovery is lower. 与Darcy渗流相比,非线性渗流条件下油井所需生产压差更大,含水率更高,采出程度更低。
The non-linear seepage flow impact on the oil/ water relative permeability was analysed. 分析了非线性作用对油水相渗的影响。
The result showed that bigger pressure gradient will result in higher oil relative permeability and lower water relative permeability. 6. Displacement model of non-linear seepage flow was showed. 结果表明在非线性渗流区域范围内,压力梯度越高油相相渗越高,水相相渗越低。6.提出了新的油水两相驱替模型。
The results showed that mobility and start-up pressure gradient are the main reasons of non-linear seepage flow effect. 结果表明流度与启动压力梯度是形成非线性渗流的主要因素。