井漏是当前四川钻井工程中的一个难题。川东北地区三年多来的钻井时效分析表明,处理井下复杂情况所花时间的80％是耗在处理井漏上。如雷5井,第一次开钻就井漏,堵了钻,钻了堵,整整用去半年时间,前后堵漏40次,用水泥423吨、不同性能的泥浆580米~3、各种处理剂43吨,还是无法钻井,只得暂闭。随着勘探领域的扩大,老区将加速 Lost circulation is a difficult problem in current drilling engineering in Sichuan. Drilling time-lapse analysis over the past three years in northeastern Sichuan shows that 80% of the time it takes to process downhole complexities is spent on disposal of the well. Thunder 5 wells, the first drilling on the Lost circulation, blocking the drill, drilling a block, a full six months to go with the plugging 40 times before and after, with 423 tons of cement, mud of different performance 580 meters to 3, all kinds of 43 tons of treatment agent, still can not drill, had to be temporarily closed. With the expansion of exploration areas, the old area will accelerate