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塑料在钻探工程方面的应用，目前正被人们重视。当钻孔钻穿节理、裂隙及溶洞发育的复杂地层后，使地层失去固有的平衡状态，就经常发生冲洗液漏失或孔壁垮塌等现象，严重影响了钻进速度。经过我们几年来的试验证明，价廉的简易合成的脲醛树脂己能适用于裂隙性复杂地层防止冲洗液漏失的堵漏工作。由于脲醛树脂本身性较脆，物理机械强度不高和粘接岩石能力不够强等弱点，使其应用范围受到限制。为了改变此状况，使其也能适用于护孔，并替代部分无缝钢制作的套管，就有必要进行研究改善脲醛
The application of plastic in drilling engineering is currently being taken seriously. When the borehole drills through the complicated formations with joints, fractures and karst cavities, and the formation loses the inherent equilibrium state, the phenomenon of fluid loss or hole wall collapse often occurs, which seriously affects the drilling speed. After years of experiments, we proved that cheap and easy-to-synthesize urea-formaldehyde resin has been applied to prevent fracturing of complex formations to prevent leakage of plugging leakage. Due to its inherent brittle urea-formaldehyde resin, the physical and mechanical strength is not high and the weakness of the ability to bond the rock so that its application is limited. In order to change this situation, it can also apply to the hole, and replace some of the casing made of seamless steel, it is necessary to study to improve the urea-formaldehyde