摘要
管流试验环道可以模拟原油在管道内流动、停输和再启动全过程,研究流体的流动特性。套管式管流试验环道具有体积小、省水、便于操作与维护等优点。利用数值传热学方法,对套管式管流试验环道内动态和静态降温过程进行了模拟研究。结果表明,按照设定的降温速率进行降温,在油、水流量分别为50mL/s和1.0m3/h条件下,6m长管段内的原油轴向温差小于0.03℃。动态降温过程中,油水温差小于0.55℃,且降温35min后原油和水实现同步降温;静态降温过程中,油水温差小于0.12℃,且降温25min后原油和水实现同步降温。
Oil transportation,static cool-down process during shut-down period and restart of the crude oil pipeline can be effectively simulated in the experimental loop(EL),with which the flow behavior of a certain fluid can be studied as well.Compared with the single-pipe EL with a huge water bath,the casing EL has many advantages of small volume,water saving,ease of operation and maintenance and so on.Dynamic and static cool-down process for the casing EL are simulated by NUT method.The results show that under preset cooling rates of the water,the axial temperature difference of the oil at six-meter intervals is within 0.03 ℃,in conditions of oil and water fluxes no less than 50 mL/s and 1.0 m3/h separately.The radial temperature difference between oil and water is within 0.55℃ during dynamic cool-down process,and after cooling for 35 min.the oil and water begin to cool down with the same cooling rate.Moreover,the radial difference is within 0.12℃ during static cool-down process,and 25 min.Later,the oil and water start to cool down synchronously.
出处
《油气储运》
CAS
北大核心
2008年第3期40-43,共4页
Oil & Gas Storage and Transportation
关键词
水套管
管流试验环道
CTDMA方法
温度分布
含蜡原油
water casing pipe,casing experimental loop,CTDMA method,temperature distribution,waxy oil