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常因岩石的结构与构造，组成岩石的矿物颗粒的硬度、形状、大小、排列方式和它们之间的粘结力、胶结物质的成分、数量，以及水分的含量与地下水的活动形式，甚至地质构造作用等因素的影响，致使某些岩层具有松散、节理、裂隙，溶洞等特点。当钻孔钻穿这类地层时，使地层失去平衡状态，出现漏失或涌水，或孔壁坍塌，以致阻碍钻孔的顺利施工。为了解决这些问题以保证钻孔的顺利钻进，应用高分子聚合物处理有一定的效果，丙凝就是其中应用的一种。现椐一些资料加以整理，供参考。
Often due to the structure and structure of the rock, the hardness, shape, size, arrangement of the mineral particles that make up the rock and the cohesion between them, the composition and amount of cementitious material, the content of water and the active form of groundwater, Tectonic effect and other factors, resulting in some rock with loose, joints, cracks, caves and other characteristics. When a borehole drills this type of formation, it loses its balance and leakage or gushing water, or the hole wall collapses, hindering the smooth construction of the borehole. In order to solve these problems to ensure the smooth drilling of drilling, the application of polymer treatment has a certain effect, which is one of the application of acetone. Now some information to be collated for reference.