龙江南部平原区地层表面出露多,为第四系砂卵砾石。其特点是砾径大,胶结性差,层位厚。81年04机施工的L－36号孔设计孔深200米,因用普通泥浆钻进至168．77米,孔壁严重坍塌,处理无效被迫终孔。因生产所需,我们在这个地区试用了PAM泥浆,钻进4个孔,共190．85米,收到良好的效果。82年全面推广使用,又完成了25个孔2366．9米的钻进工作量。提高了台月效率,保证了钻孔质量,深受工人欢迎。 Surface of the southern part of the Longjiang area strata exposed more for the Quaternary sand and gravel. It is characterized by large gravel diameter, poor cementation, the horizon thick. 81 years L-36 04 machine construction hole design depth of 200 meters, due to drilling with ordinary mud to 168.77 meters, a serious collapse of the hole wall, the treatment was invalid forced the final hole. Due to the production needs, we tried PAM mud in this area, drilling 4 holes, a total of 190.85 meters, received good results. 82 years to fully promote the use of completed 25 holes 2366.9 meters of drilling workload. Taiwan and Taiwan to improve efficiency, ensure the quality of drilling, welcomed by workers.