应科学看待低渗透储集层——回应窦宏恩先生  

Low permeability reservoirs should be viewed in scientific perspectives——Reply to Mr. Dou Hong-en

作　　者：李传亮[1] 

机构地区：[1]油气藏地质及开发工程国家重点实验室西南石油大学,四川成都610500

出　　处：《特种油气藏》2009年第4期97-100,共4页Special Oil & Gas Reservoirs

摘　　要：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。低渗透储层的岩石高压缩性和强应力敏感是由实验的系统误差所致,不是岩石自身性质的体现。岩石压缩系数的逻辑反转现象,已通过新的实验方法加以克服。岩石的应力敏感程度与岩石的压缩性有关,由于岩石的压缩系数极小,因此应力敏感程度极弱,生产过程中可将其忽略。启动压力梯度和滑脱效应均属于实验假象,其实并不存在。低渗透储层与中高渗透储层没有本质区别,中高渗透储层没有出现的奇特现象,低渗透储层也不应该有。Many misunderstandings in the study of low permeability reservoirs are resulted from improper experiment means and the lack of rational scientific research method. The high compressibility and strong stress-sensitivity of low permeability reservoir rocks are due to the system error in laboratory measurements, but not a manifestation of intrinsic rock property. The logic inversion of rock compressibility has been overcome by a new measurement method. The stress sensitivity of rock is related to the compressibility of rock. Because the compressibility of rock is very small, the stress sensitivity is quite weak and can be neglected in production process. Both the threshold pressure gradient and slippage effect are experimental artifact and do not exist actually. There is no essential difference between low permeability reservoir and mid-high permeability reservoir. Those peculiar phenomena not seen in mid-high permeability reservoirs shall not appear in low permeability reservoir.

关 键 词：低渗透储层 压缩系数 应力敏感 滑脱效应 启动压力梯度 

分 类 号：TE311[石油与天然气工程—油气田开发工程] TE348