热力开采稠油蒸汽驱阶段的埋地高温集油管道，其最高工作温度可达250℃，冬季平均敷设回填土温度为一10℃，温差高达260℃，温度应力可达655．2MPa，远远超过一般管材的强度极限，成为调油生产的技术难题。辽河油田设计院结合调油建设工程的具体实际，对该课题进行了研究和实践 Thermal exploitation of heavy oil steam flooding phase of the buried high temperature oil gathering pipe, the maximum working temperature up to 250 ℃, the average backfill temperature in winter laying a 10 ℃, the temperature difference of up to 260 ℃, temperature stress up to 655.2MPa, far Exceed the strength limit of the general pipe, become a technical problem of oil production. Liaohe Oilfield Design Institute combined with the specific actualization of oil construction project, carried out research and practice on the subject