金家油田疏松砂岩油藏酸化机理室内研究

金家油田砂岩储层泥质含量高,存在常规酸化易出砂,导致酸化效果不佳的问题。本文在储层伤害特征研究的基础上,利用溶蚀实验优选出适合金家油田疏松砂岩油藏的酸液类型，同时通过岩心流动实验及环境扫描电镜、残酸离子浓度评价技术对其酸化机理进行了讨论，结果表明该酸化液配方对于疏松砂岩油藏酸化效果好，可有效防止粘土微粒运移，减少储层二次伤害。

Study on the mechanism of acidification of unconsolidated sandstone reservoir in Jinjia oil filed

Jinjia oil field is the Sandstone reservoir with high clay content, there is easy to sand conventional acidification, leading to acidification of the problem of poor results. In this paper, On the basis of the injury characteristics in the reservoir. Through the corrosion experiment,we can option the suitable acid type of jinjia unconsolidated sandstone oil reservoir,At the same time, through the core flow experiments and environmental scanning electron microscope, ion concentration of residual acid acidification of its mechanism of evaluation techniques are discussed, The results show that the acidification of liquid formula for the effect of acidification of unconsolidated sandstone reservoir, and can effectively prevent the migration of clay particles to reduce the reservoir of secondary injury.