注CO_(2)对原油体系黏度影响实验及其预测模型  

Experiment of the influence of CO_(2) injection on the viscosity of crude oil system and its prediction model

作　　者：廖小波 师浩文 邓哲涵 廖锐全 刘凯[1,2,3,4] LIAO Xiaobo;SHI Haowen;DENG Zhehan;LIAO Ruiquan;LIU Kai(Hubei Key Laboratory of Oil and Gas Drilling and Production Engineering(Yangtze University),Wuhan 430100,China;Laboratory of Multiphase Pipe Flow,CNPC Gas Lift Innovation Center,Wuhan 430100,China;School of Petroleum Engineering,Yangtze University,Wuhan 430100,China;National Engineering Research Center for Oil&Gas Drilling and Completion Technology,Wuhan 430100,China)

机构地区：[1]油气钻采工程湖北省重点实验室(长江大学),武汉430100 [2]中国石油天然气集团公司气举试验基地多相流研究室,武汉430100 [3]长江大学石油工程学院,武汉430100 [4]油气钻完井技术国家工程研究中心,武汉430100

出　　处：《中国科技论文》2024年第1期8-13,32,共7页China Sciencepaper

基　　金：国家自然科学基金资助项目(62173049);油气钻采工程湖北省重点实验室开放基金资助项目(YQZC202210)。

摘　　要：为了探究不同温度、压力和CO_(2)含量对原油黏度的影响,采用轻质原油和CO_(2)体系室内实验的方法进行测试。结果显示:在一定温度或CO_(2)含量条件下,原油黏度随着压力的变化呈现出先降低、后升高的趋势,其中饱和压力起到关键的转折作用。此外,在保持压力恒定时,原油黏度随着温度的升高呈现出下降趋势。温度对黏度的影响相对于压力更为敏感,且随着CO_(2)含量的增加,温度对黏度的影响逐渐减弱。通过对贝格斯-罗宾逊模型进行修正,提出了一种含饱和压力的新预测模型,绝对平均百分比误差从52.83%降为8.96%。该模型在轻质原油条件下表现出更好的预测准度,为实际生产提供了一定的理论指导。In order to investigate the impact of temperature,pressure,and CO_(2) concentration on crude oil viscosity,laboratory experiments were conducted by using a system consisting of light crude oil and CO_(2).The results indicate that,under specific tem-perature or CO_(2) concentration,crude oil viscosity exhibits a trend of initially decreasing and then increasing with changes in pressure,with the saturation pressure playing a critical turning point role.Furthermore,under a constant pressure,a decrease trend of crude oil viscosity with increase of temperature is observed.Temperature had a more pronounced effect on viscosity in comparison to pres-sure.Moreover,as CO_(2) concentration increases,the influence of temperature on viscosity gradually diminishes.A new prediction model with saturated pressure corrected by the Beers-Lambert model is proposed,reducing the absolute mean percentage error from 52.83%to 8.96%.This model exhibits better prediction accuracy under light crude oil conditions,providing some theoretical guid-ance for practical production.

关 键 词：二氧化碳-原油体系 黏度 黏度预测修正模型 黏度室内实验 

分 类 号：TE341[石油与天然气工程—油气田开发工程]