压裂液伤害的计算机断层扫描技术

Computed Tomography Technology for Fracturing Fluid Damage

使用CT(计算机断层扫描)技术可以在不破坏岩心的前提下进行无损检测,有利于对压裂液储层伤害的位置和程度进行效果对比、定量分析和直观观察。采用微米-纳米级CT扫描系统对压裂液伤害前后的岩心进行了微观分析,结果表明:致密储层岩心的物理性质差是引起储层伤害的根本原因,压裂液与储层的相互作用是伤害的引发因素。CT技术定性、定量、可视化的分析能力可以更直观地反映上述伤害产生的位置和程度,可以有效印证其他分析手段得到的数据,为压裂液伤害的研究提供试验手段和理论依据。

The use of CT(Computed Tomography)technology can perform non-destructive testing without destroying the core,which is beneficial to the comparison of effects,quantitative analysis and visual observation of the location and extent of fracturing fluid reservoir damage.The experimental results show that the poor physical properties of tight reservoirs are the root cause of reservoir damage,and the interaction between fracturing fluid and reservoir is the damage triggering factor.The qualitative,quantitative and visual analysis ability of CT technology can more directly reflect the position and extent of the above-mentioned damage,which can effectively testify the data obtained by other analytical methods,and provide experimental means and theoretical basis for fracturing fluid damage research.