特高含水期原油低温集输温度边界确定方法  

Method for determining temperature boundary of low temperature gathering and transportation of crude oil in extra-high water cut period

作　　者：秦远智 张瀚文 尹然 熊建华[4] 黄启玉 QIN Yuanzhi;ZHANG Hanwen;YIN Ran;XIONG Jianhua;HUANG Qiyu(College of Mechanical and Storage Engineering,National Engineering Laboratory of Oil and Gas Pipeline Transportation Safety,Beijing Key Laboratory of Oil and Gas Transmission and Distribution Technology,China University of Petroleum(Beijing),Beijing 102249,China;Research Institute of Science and Technology of Pipe China,Langfang 065000,Hebei,China;Changqing Engineering Design Company Limited,Xi’an 710018,Shaanxi,China;Jiangsu Oil Field Bureau,China Petroleum and Chemical Corporation,Yangzhou 225009,Jiangsu,China)

机构地区：[1]中国石油大学(北京)机械与储运工程学院,油气管道输送安全国家工程实验室,城市油气输配技术北京市重点实验室,北京102249 [2]国家石油天然气管网集团有限公司科学技术研究总院分公司,河北廊坊065000 [3]长庆工程设计有限公司,陕西西安710018 [4]中国石油化工股份有限公司江苏油田分公司,江苏扬州225009

出　　处：《化工进展》2024年第10期5475-5485,共11页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金重点项目(51534007);国家自然科学基金面上项目(51374224)。

摘　　要：随着国内油田逐渐进入开采后期,本文提出黏壁温度作为综合含水率70%~90%的高含水低温集油的评价指标已进入推广阶段且效果显著,但在现场降温试验中发现含水率90%以上的特高含水期原油管线实际运行温度与黏壁温度预测结果之间存在一定误差。因此,针对特高含水期原油开展低温集输温度边界条件研究,对完善油田低温集输技术具有重要意义。利用环道实验装置进行了特高含水期原油黏壁凝油冲刷实验,对特高含水期原油油水两相流动特性和油相黏壁特性进行分析,确定了屈服应力是阻碍黏壁凝油在管道内被冲刷剥离最主要的影响因素。编制了特高含水期原油低温集油温度预测软件,利用油田单井集油管线的现场降温试验进行了验证,误差在2℃范围内,满足工程运用需求。As domestic oil fields gradually enter the late stage of exploitation,viscous wall temperature as the evaluation index of high water and low temperature collection with a comprehensive water content of 70%—90%has entered the promotion stage and the effect is remarkable.However,in the field cooling test,it is found that there is a certain error between the actual operating temperature of ultra-high water cut crude oil pipelines with water content of more than 90%and the prediction results of viscous wall temperature.Therefore,it is of great significance to study the temperature boundary conditions of low temperature gathering and transportation for extra-high water cut crude oil.In this paper,the characteristics of oil-water two-phase flow and oil-phase wall adhesion in the extra-high water cut period are analyzed.It is determined that the yield stress is the most important factor that prevents the viscous wall oil from being washed away in the pipeline.The prediction software of low temperature collection temperature for extra-high water cut crude oil is developed and verified by the field cooling test of single well collection pipeline.The error is within 2℃,which meets the engineering application requirement.

关 键 词：特高含水期原油 黏壁凝油 低温集输 温度边界条件 冲刷应力 

分 类 号：TE832[石油与天然气工程—油气储运工程]