摘要
原油黏度是油田地面工程集输系统规划与设计的重要物性参数。传统搅拌法测定高含水稠油混合液黏度,存在低转速无法均匀分散、高转速偏离实际工况的问题,采用高速搅拌分散与低速剪切测试交替进行,此剪切程序设计适用于高含水稠油混合液的搅拌测黏方法。此方法克服了环道法用油量大且实验操作复杂的缺点,并具备旋转黏度计连续测量且操作方便的优点。采用高低速交替搅拌法测定高含水稠油流动特性曲线,测量结果与实验环道法相比,1#油样的平均相对偏差为6.16%,平均绝对偏差为3.23 mPa·s,2#油样的平均相对偏差为2.61%,平均绝对偏差为3.69 mPa·s。结果表明:测试误差在允许范围内,测定得到的流动特性曲线呈现良好的规律性,混合液剪切稀释性随其含水率和温度降低而逐渐增强。
Crude oil viscosity is an important physical parameter for the planning and designing the oilfield surface engineering transmission system.There are problems with low speeds that cannot be evenly dispersed,high speeds deviation from actual working conditions,when the traditional stirring method is adopted to determine the viscosity of heavy oil-water mixture with high water fraction.The program performed by high-speed stirring dispersing and low-speed shear testing is designed for stirring viscometry methods for heavy oil-water mixtures with high water fraction.This method overcomes the disadvantages of the large oil consumption and the complex experimental operation of the ring method,and has the advantages of continuous measurement and convenient operation of rotating viscosity meters.The high and low speed alternating stirring is used to determine the heavy oil-water mixture with high water fraction flow characteristics curve.Compared with the ring method,the average relative deviation of Oil Sample 1 is 6.16%,the average absolute deviation is 3.23 mPa·s,the average relative deviation of Oil Sample 2 is 2.61%,and the average absolute deviation is 3.69 mPa·s.The test results error is within the allowable range,and the flow characteristics curve obtained at the same time presents a good regularity.The shear diluency of the mixture gradually increases with the decrease of its water-cut and temperature.
作者
熊一凡
侯磊
孙省身
朱祚良
胡占州
陈军毅
王文君
XIONG Yifan;HOU Lei;SUN Xingshen;ZHU Zuoliang;HU Zhanzhou;CHEN Junyi;WANG Wenjun(College of Mechanical and Transportation Engineering,China University of Petroleum(Beijing)·MOE Key Laboratory of Petroleum Engineering)
出处
《油气田地面工程》
2024年第10期14-20,共7页
Oil-Gas Field Surface Engineering
基金
国家自然科学基金面上项目“磁场作用下含蜡原油乳状液黏度变化的多尺度表征研究”(51974335)。
关键词
高含水稠油混合液
当量黏度
搅拌测黏
高低速交替搅拌
heavy oil-water mixture with high water fraction
equivalent viscosity
stirring viscometry
high and low speed alternating stirring
