鄂尔多斯盆地镇泾工区钻井堵漏技术措施

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。

Lost Circulation Prevention in Zhenjing Oil Field of Erdos Basin

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.