穿心电加热管道仿真和集输规律分析  

Simulation and Analysis of Gathering and Transportation Laws for Feed-through Elec⁃trical Heating Pipelines

作　　者：李焯超 耿宇 阎凤元[1] 齐世琨 陈君卓 徐宁 梁永图[1] 谢正芳 LI Zhuochao;GENG Yu;YAN Fengyuan;QI Shikun;CHEN Junzhuo;XU Ning;LIANG Yongtu;XIE Zhengfang(National Engineering Laboratory of Oil and Gas Pipeline Transportation Safety·Key Laboratory of Petroleum Engineering of Ministry of Education·Beijing Key Laboratory of Urban Oil and Gas Transmission and Distribution Technology,China University of Petroleum(Beijing);Karamay Campus of China University of Petroleum(Beijing);No.9 Oil Production Plant of Daqing Oilfield Co.,Ltd.)

机构地区：[1]中国石油大学(北京)油气管道输送安全国家工程实验室·石油工程教育部重点实验室·城市油气输配技术北京市重点实验室 [2]中国石油大学(北京)克拉玛依校区 [3]大庆油田有限责任公司第九采油厂

出　　处：《油气田地面工程》2024年第9期14-23,共10页Oil-Gas Field Surface Engineering

基　　金：国家重点研发计划政府间重点专项“基于掺氢天然气和地热的住宅区分布式综合能源系统研究”(2024YFE0100800)。

摘　　要：随着外围油田深入开发,零散区块不断开采,穿心电加热技术得到了广泛应用。由于电线插入后管道内流体流动和传热的规律尚不明确,因此现场主要依靠保持电加热系统高功率运行来保证原油的安全输送,能耗浪费严重。针对穿心电加热管道的环空结构,基于质量、动量和能量守恒定律,分析电线插入管道后带来的摩擦和加热效应,建立了穿心电加热管道稳态温度和压力计算模型。结合智能算法校核摩阻和总传热系数,实现了不同功率下穿心电加热管道沿线水热力参数的准确计算;同时分析了含水率、输量、起点温度、功率和加热方式对电加热管道温度、压力、维温功率和维温能耗的影响情况。利用大庆油田电加热管道现场数据对模型进行了验证,结果显示:压力平均误差为7%,温度平均误差为4.16%,能够对生产起到指导作用,基本满足生产需要;此外,增大输量有助于节能降耗,全线维温是最节能的运行方式。With the further development of peripheral oilfields and the continuous exploitation of scattered blocks,the technology of feed-through electrical heating has been widely used.Since the law of fluid flow and heat transfer in the pipeline after the wire is inserted is not clear,the site mainly relies on keeping the electric heating system running at high power to ensure the safe transmission of crude oil,and the energy consumption is seriously wasted.Regarding the annular structure of the feed-through electrical heating pipeline,based on the law of conservation of mass,momentum,and energy,the friction and heating effects caused by wire insertion into the pipeline are analyzed,and the steady state temperature and pressure calculation model of the pipeline is established.Combined with the intelligent algorithm to check the friction resistance and the total heat transfer coefficient,the accurate calculation of the water thermal parameters along the pipeline under different power is realized.The effects of water content,transmission volume,starting point temperature,power,and heating mode on temperature,pressure,temperature maintenance power,and temperature maintenance energy consumption of feed-through electrical heating pipeline are analyzed.The model is validated using actual pipeline field test data from Daqing Oilfield.The results indicate an average pressure error of 7%,and an average temperature error of 4.16%.It proves to be instructive for production and essentially meets production requirements.In addition,increasing the transmission volume helps save energy and reduce consumption.Maintaining a consistent temperature throughout the entire pipeline is the most energy-efficient operating mode.

关 键 词：穿心电加热管道 水热力仿真 集输规律 能耗分析 

分 类 号：TE866[石油与天然气工程—油气储运工程]