热油管道结蜡对管线运行的影响分析
摘要
原油管道输送过程中,随着油流所携带的热量不断地向管外散失,当温度降低到析蜡点以下时会导致蜡质的析出,在管壁内壁上会逐渐沉积一定厚度的石蜡、胶质等混合物,结蜡会对输油管道内油流的传热和流动造成影响[1];通过分析结蜡前后管线运行状况,建立管道运行的数学模型,对结蜡前后输油管线的温度和压力变化进行计算;结果表明,管壁结蜡会增加管壁热阻,减少原油向地层的热量损失;但是结蜡管壁使管道流通截面减小,会增大管内摩阻。
引文
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[11]Priyank Dwivedi,Cem Sarica,Wei Shang.Experimental Study on Wax-Deposition Characteristics of a Waxy Crude Oil Under Single-Phase Turbulent-Flow Conditions.SPE163076-PA,2013.
[2]蒋旺盛.原油管道结蜡规律的试验研究[J].油田地面工程,1992,11(3):20-21.
[3]汪继锋.含蜡原油管道蜡沉积[J].应用能源技术,2010(01):1-5.
[4]孟令德.含蜡原油管道结蜡规律与清管周期确定[D].东北石油大学,2012.
[5]林爱涛.含蜡原油管道结蜡特性研究[D].中国石油大学(华东),2008.
[6]Lin Riyi,Wang fangzheng,Wang Xinwei.Heating of heavy oil by circulating hot water in closed double casing in ultra-deep wells[J].Petroleum Science,2012,9(4):506-510.
[7]Pansoy Papalmbors,Douglass J.Wilde.Principles of optimal design Modeling and Computation[M].London:Cambridge University Press,1988:32-88.
[8]王岳,曾文.含蜡热油管道低输量时结蜡对能耗的影响[J].抚顺石油学院学报,2002,22(4):38-40.
[9]So laimany Nazar A R.Measurement and modeling of wax deposition in crude oil pipeline.SPE 69425,2002.
[10]李俊刚,王志华,龙安厚,等.输油管道系统管壁温度与原油温度对蜡沉积的影响[J].大庆石油学院学报,2006,30(3):21-23.
[11]Priyank Dwivedi,Cem Sarica,Wei Shang.Experimental Study on Wax-Deposition Characteristics of a Waxy Crude Oil Under Single-Phase Turbulent-Flow Conditions.SPE163076-PA,2013.