硅酸盐钻井液储层保护室内研究

Study on Reservoir Protection of Silicate Drilling Fluid

关键词:  硅酸盐钻井液 储层保护 渗透率 渗透率恢复值

Key words:  silicate,drilling fluid,reservoir protection,permeability,recovery of permeability

摘要:

结合室内大量实验数据，分析了硅酸钻亍井液储层保护特性。结果 表明：硅酸盐加量增加，钻井液对储层损害加强；硅酸盐钻井液对高渗透率的岩心损害程度高、且损害深度深，而对低渗透率岩心损害程度较低、且损害深度相对较浅。无机盐能加剧硅酸盐钻井液对岩心的损害，且随无机盐加量增加而增加，这种损害无法用酸解除。

Abstract:

Based on the lab experiments,reservoir protection characteristics of silicate drilling fluid were studied.The results showed that the more silicate was added,the farther damage the reservoir would receive.The damage of silicate drilling fluid to high perm