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本文对“保护油气层防止地层损害”这一课题中的若干重要概念进行了探讨。对如何给地层损害下科学的定义。通过射孔完井电模拟试验,证明了某些情况下,射孔对地层的损害比钻井损害更为严重。目前普遍采用矿场试井法所确定的表皮系数作为地层是否受损的差别标准是不够确切的。

Some Significant Problems about Formation Damage

A discussion on some significant ideas in the project "to Protect oil and gas reservoir from formation damage" is presented in this paper. For how to give a scientific definition for formation damage, through an electrical simulation test of perforated completion, it is proved that under some conditions, the damage of perforation to formation is more serious than that of drilling. It is not exact to make the skin facter determined by generally adopted well testing in field at present, as an identifying criterion of whether the formation was damaged or not.