讨论《启动压力梯度真的存在吗?》一文

Discussion on "Is a starting pressure gradient necessary for flow in porous media?"

低渗透储层是否存在启动压力梯度已经成为低渗透油田开发以及低渗透油藏开发理论中的热点问题,在学术界存在着诸多争论。其中将同一渗流问题放在稳定和不稳定两种不同渗流条件下进行讨论的研究,就令不少研究者费解。而利用探边公式计算流体波及到边界的距离,并将表皮效应错误地与启动压力梯度相联系,从而提出在低、特低渗透储层渗流中不存在启动压力梯度的说法是不合理的。

Whether a threshold pressure gradient（TPG） of percolation exists in low-permeability reservoirs has been a hot topic in development theories of low-permeability reservoirs,from which a good many arguments arise in academic circles.For instance,a paper that discusses an identical percolation problem under stable or unstable percolation conditions,which made readers confused.Another unreasonable opinion that percolation of porous media has no threshold pressure gradient in low-or extralow-permeability reservoirs was proposed by using a reservoir limit testing equation to calculate distance to a reservoir boundary that fluid can affect and by wrongfully associating skin effect with a threshold pressure gradient.