聚丙烯酰胺泥浆是当前国内外性能较好的一种泥浆。我队禹县梁北施工区第四纪冲积层较厚,其中夹有二、三层卵石和一、二层流砂。钻进过程中若不下套管,泥浆增稠较严重。有的钻孔泥浆粘度高达50秒左右,几乎天天调泥浆也解决不了问题,这样不仅钻效低、成本高、且易造成事故。从1978年10月开始试用聚丙烯酰胺泥浆,经两个钻孔试用,初 Polyacrylamide mud is a kind of mud with better performance at home and abroad. My team Liangbei Beibei construction area Quaternary alluvial thicker, of which there are two, three pebbles and a second layer of sand. If not under the casing during drilling, mud thickening more serious. Some drilling mud viscosity up to 50 seconds, almost daily mud can not solve the problem, so not only low drilling efficiency, high cost, and easy to cause accidents. From 1978 October began trial polyacrylamide mud, after two drilling trial, early