聚氨酯硬质泡沫塑料现场施工要求温度较严格,当环境温度低于-20℃时,就不能施工。辽河油田地区冬季期长,油田对高凝油开采地面工程保温要求高。针对聚氨酯硬质泡沫冬季施工困难,因此,辽河油田在施工中,采用了夏季比较成熟的泡沫管线现场补口技术,用了多个方案反复研究对比择优设计,经过不断改进完善和几十次的试验,于1984年冬季研制成 Polyurethane rigid foam on-site construction requires more stringent temperature, when the ambient temperature is below -20 ℃, it can not be constructed. Liaohe Oilfield winter long period, the oil field of high pour point extraction of high insulation requirements. For the construction of polyurethane rigid foam in winter is difficult, therefore, Liaohe Oilfield in the construction, the use of the summer more mature foam pipe site filling technology, with a number of programs repeatedly research and comparison of the optimal design, through continuous improvement and dozens of times Test, developed in the winter of 1984