1987年川南矿区的寺34井,因打水泥塞不幸把钻杆封固在套管中。处理时,先采用磨铣方法,用1.5个月时间,才磨去一根单根。后改为套铣方法,仅用3个月时间倒出钻杆13根,大大缩短了事故处理时间。寺34井,下了φ177.8mm套管后,用φ152mm钻头打完设计井深。经电测,决定注水泥封掉阳三~1以下的120m裸眼井段,准备进行酸化作业。在打水泥塞过程中,由于泥浆池板阀关闭 In 1987, the well of South Sichuan Mine Temple 34, because of the cement plug unfortunately sealed in the casing in the drill pipe. Processing, the first milling method, with 1.5 months, before grinding to a single root. After the change to the sleeve milling method, only 3 months pouring drill pipe 13, greatly reducing the accident handling time. Temple 34 wells, under the φ177.8mm casing, with φ152mm drill finished design depth. After the electrical measurements, the decision to seal the cement sealed Yang Yang three ~ 120m below the open-hole section, ready for acidification operations. During plugging, the mud plate valve is closed