油区地热资源用于管道伴热系统的技术研究

Technical Research on Application of Oil Region Geothermal Resources in Pipeline Heat Tracing System

针对油田油区大量地热低温资源问题,提出了油区地热资源用于油田集输系统伴热管道输送的工艺,建立了原油管道伴热系统能量平衡分析模型,运用CFD软件对该工艺管道伴热系统进行了数值模拟,分析了该工艺带来的社会效益。研究结果表明,利用油田丰富的地热资源代替部分燃油节能降耗,是完全可行的。在大排量提液后,开采的地热水经换热后能满足油田集输系统加热要求,可以利用地热伴热完全替代加热炉。在此基础上,所建立的系统模型每年可有效减少因加热炉伴热而排放的污染物。

According to the problem of a large number of low temperature terrestrial heat resources in the oil field, the technology of applying terrestrial heat of the oil field in heavy oil heat tracing pipelines was put forward. The model of energy balance analysis about crude oil pipeline heat tracing system was established. The technology of pipeline heat tracing system was simulated by CFD software, and social benefits of this technology were analyzed. The results show that using geothermal resources of oil field to replace part of the fuel can realize energy saving and consumption reduction, is completely feasible. In large displacement solution, the exploitation of the geothermal water after heat exchange can satisfy the requirement of oilfield gathering system heating, can make use of geothermal heating entirely replace heating furnace. On this basis, the model of the system can effectively reduce pollutants from heating furnace emissions so the system has large economic and environmental benefits.