解除钻井液对储层污染的研究

Research for damage of remove of the drilling fluid to reservoir

通过了解国内外钻井液技术,分析研究钻井液对储层各类伤害,并通过查找分析大量岩心伤害实验数据,弄清楚了钻井液对储层伤害的主要原因,并针对其主要伤害原因,通过分析解除水敏性的实验以及解除水锁的能力数据,发现在入井液中加入KCl、表面活性剂以及甲醇时,可以解除钻井液液相对储层造成的伤害。

By understanding the drilling fluid technology at home and abroad,analysis all kinds of reservoir damage with drilling fluid,and by searching for a large number of core damage experiment data,find out the main reasons of the damage to the reservoir with drilling fluid,then for its main damage reason,through the analysis of the experiment data of relieve water sensitivity and water lock capacity,found to add KCl,liquid surfactant and methanol in the well,can remove damage of liquid phase of drilling fluid to the reservoir.