鄂尔多斯盆地镇泾工区钻井堵漏技术措施

Lost Circulation Prevention in Zhenjing Oil Field of Erdos Basin

摘要:

鄂尔多斯盆地镇泾工区钻井中遇到井漏难题，针对不同的漏失特点采用不同方法堵漏。第四系黄土层漏失采取控时钻进加短程起下钻方法；渗透性砂岩层漏失采用以预防为主，随钻加入单封堵漏方法；纵向裂隙层漏失采用复合堵漏材料方法，恶性漏失采用桥接材料+水泥封堵方法。实践证明，所采用的堵漏技术措施有效。

Abstract:

According to the characteristics of lost circulation in drilling in Zhenjing oil field, the treatment methods were adopted for different cases. Time-controlled drilling and short pipe-trip was for the lost circulation in the quaternary loess layer, prevention and drilling with unidirectional pressure temporary plugging additive was for the lost in permeable sand-stone layer, composite cement slurry was for vertical fracture layer and bridge material + cementing was for serious loss. All of these lost circulation control technologies were proved effective.