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鄂尔多斯盆地富县工区钻井过程中遇到井漏难题,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。
In the Ordos Basin, Fuxian work area encountered a problem of well leakage during drilling, and different methods of plugging were adopted according to different characteristics of leakage. Quaternary loess leaks take the control of drilling plus a short distance from the drill method; permeability sandstone layer to prevent the loss of the main, while drilling into a single plugging method; vertical fracture layer leakage using composite plugging materials, malignant Leakage using bridging material + cement plugging method. Practice has proved that the plugging technology measures used effectively.