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深水油气管道再启动过程模拟计算

来源:油气储运, Oil & Gas Storage and Transportation, 2012年0 日期:2012-09-07 浏览量:
深水油气管道再启动过程模拟计算
 
 
Simulation calculation of restart-up process of deep water oil and gas pipelines
 
【作者】 李明忠; 刘陈伟; 李加院; 王一平; 李彦超;
 
【Author】 Li Mingzhong, Liu Chenwei, Li Jiayuan, Wang Yiping, Li Yanchao Petroleum Engineering College of China University of Petroleum (East China)
 
【机构】 中国石油大学(华东)石油工程学院;
 
【摘要】 为了研究深水油气管道再启动过程的多相流动和传热规律,结合传热学和多相流理论,建立了深水管道再启动过程数学模型,给出了模型的定解条件和求解方法;利用该模型,仿真模拟了深水管道再启动过程中温度和压力等参数的变化规律;在此基础上对水合物的生成情况进行预测并分析参数敏感性。研究表明:启动流量、绝热层的导热系数和厚度可以明显改变管内流体的温度分布,且启动流量越大、绝热层导热系数越小、厚度越大、管内流体温度越高,生成水合物的风险越小。研究结论可为深水油气管道再启动的安全进行提供理论指导。
 
 
【Abstract】 In order to study the multiphase flow and heat transfer laws of restart-up process for deep water oil and gas pipelines and combined with heat transfer and multi-phase flow theory, this paper establishes the mathematical model for the restart-up process of deep water pipelines, and provides definite conditions and solution for the model in combination of heat transfer and multiphase theory. With this model, it simulates the change laws of temperature and pressure parameters in the restart-up process of deep water pipelines. Based on this, it carries out a prediction on generations of hydrate and an analysis on parameter sensitivity. Research results show that start-up flowrate, thermal conductivity and thickness of insulating layer can improve the temperature distribution of fluid in the pipeline greatly, and the bigger the start-up flowrate is, the smaller the thermal conductivity is; the bigger the thickness and the higher temperature of fluid in the pipeline are, the less the risk of generation of hydrate is. The research conclusions can provide a guideline to safe operation of restart-up deep water oil and water pipelines. 还原
 
【关键词】 深水油气管道; 再启动; 数学模型; 仿真模拟; 水合物预测;
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【Key words】 deep water oil and gas pipelines; restart-up; mathematical model; simulation; hydrate prediction;
 
 
【基金】 国家自然基金资助项目“深水钻井中的气液两相流传热规律研究”,51004113;中央高校基本科研业务费专项资金资助项目“深水采油系统多相流压力及温度预测方法研究”,09CX0416A