摘要
保温管道经济清管周期的预测对管道安全及经济运行具有一定的理论指导意义。基于逐步回归法建立蜡沉积模型,以管道运行单位输油成本为函数建立经济清管周期模型,确定结蜡厚度与动力费用及热力费用之间的关系,并对不同出站温度及不同输量情况下的经济清管周期进行预测。结果表明:当进站油温为45℃,输量为1 000×10~4t/a时,清管周期为12 d,经济余蜡厚度为45.5 mm。管道清管单位总能耗费用随运行时间的增加而不断降低,当降低到一定值时,管道清管单位总能耗费用随时间的增加而增大;当管道输量为600×10~4t/a,进站油温为40℃时,清管周期为46 d,经济余蜡厚度为65.3 mm。清管单位总能耗费用与输量成反比,清管单位总能耗费用随着运行时间的增加而急剧下降,当下降到最小值时,不再随运行时间而增加。
The economic pigging period prediction of insulation pipelines has some theoretical signifi-cance for safe and economic operation of pipelines.The wax deposition model is established based on the stepwise regression method,and the economic pigging period model is established as the function of the unit oil transportation cost of pipeline operation.Then the relationship among the wax thick-ness,the power cost and the thermal cost are determined,and pigging periods under different inlet temperature and throughput are predicted.The results show that the pigging period is12days and eco-nomic wax thickness is45.5mm when the inlet temperature is45℃and the pipeline throughput is1000×104t/d,the pipeline pigging total energy consumption cost continuously reduces with the in-crease of running time,and when the cost reduces to a certain value,it increases with the increase of running time;the pigging period is46days and economic wax thickness is65.3mm when the inlet temperature is40℃and the pipeline throughput is600×104t/d,the pigging total energy consumption cost is inversely proportional to throughput,the cost significantly reduces with the increase of running time,and when it reduces to its minimum value,it no longer increases with the increase of running time.
出处
《油气田地面工程》
2018年第3期35-39,共5页
Oil-Gas Field Surface Engineering
基金
中国石油天然气股份有限公司低输量清蜡技术研究项目(020401-01-02 1)
关键词
保温管道
含蜡原油
蜡沉积模型
清管周期
预测模型
insulation pipeline
wax- bearing crude oil
wax deposition model
pigging period
insulation pipeline
wax- bearing crude oil
wax deposition model
pigging period
