对低渗透储层的错误认识

低渗透储层研究出现的许多错误认识，是由于实验手段的不正确和缺少理性的科研方法所致。低渗透储层发育一些微裂缝，但裂缝开度小，连续性差，在地下被迫闭合（地下没有张开的缝），因此，渗透率极低。低渗透储层的微裂缝与粒间孔隙相当，因此，为单一介质，而不能称作双重介质。低渗透储层的岩石高压缩性和强应力敏感是由实验的系统误差所致，根本不是岩石自身的性质。滑脱效应和启动压力梯度属于实验假象，其实并不存在。

MISUNDERSTANDINGS OF LOW PERMEABILITY RESERVOIR

There are many misunderstandings of low permeability reservoir,which is due to incorrect experiment methods and shortage of rational research.Some microfractures develope in low permeability reservoir,their openings are narrow and continuity are poor and under stress（open fractures can not exist underground）they are closed,so permeability is quite low.The microfractures in low permeability reservoir are similar to the inter-granular pores to some extent,so low permeability reservoir should be viewed as single-pore media,and can not be named dual-pore media.High compressibility and strong stress-sensitivity of low permeability reservoir are due to the systematical error in laboratory measurement,and are not the property of reservoir itself.The slippage effect and the threshold pressure gradient of reservoirs are false appearances of experiment and do not exist actually.