According to the assumption of slightly compressible fluid, the quadratic-gradient term in nonlinear partial differential equation of the traditional models for describing percolation regulation is usually neglected. This method is questionable for low permeability reservoirs.
在传统的描述油层渗流规律的非线性偏微分方程中根据弱可压缩流体的假设忽略了二次梯度项,对于低渗透油藏这种方法是有疑问的,已经知道如果在试井较长时间忽略二次梯度项将产生误差。
参考来源 - 考虑二次梯度项影响的低渗透油藏非达西流动分析·2,447,543篇论文数据，部分数据来源于NoteExpress
According to the assumption of slightly compressible fluid, neglected the quadratic gradient term in nonlinear partial differential equation is usually lead to error.
在非线性偏微分方程中，根据弱可压缩液体的假设，忽略二次梯度项，在试井较长时间内将产生误差。
This paper analyzes the unsteady-state flow of a slightly compressible fluid into a slanted well and gives an equation for calculating the partial penetration and slanting of a well.
研究了微可压缩流体在斜井内的不稳定流动状态，给出了数学模型，推导出了油井的完善程度和油井倾斜造成的表皮因子的计算式。
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