基于多孔介质燃烧的火烧油层模拟实验  

In-Situ Combustion Simulation Experiment Based on Combustion of Crude Oil in Porous Media

作　　者：刘宏升[1] 吴丹[2] 孔庚 解茂昭[1] 

机构地区：[1]大连理工大学能源与动力学院,辽宁大连116024 [2]中国船舶重工集团公司第760研究所,辽宁大连116013

出　　处：《上海交通大学学报》2016年第8期1294-1299,共6页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金面上项目(51576029;51476105);中央高校基本科研业务费专项(DUT16QY19)资助

摘　　要：通过原油黏度测量实验和热重实验,确定了原油黏度特性和氧化反应动力学参数.在此基础上,搭建了多孔介质稠油燃烧实验系统,实现了原油在多孔介质模拟油层内的稳定燃烧,并分析燃烧过程温度变化规律.结果表明:随温度升高,原油黏度明显降低;原油氧化过程分为轻质蒸发、低温氧化反应、燃料沉积和燃烧4个阶段;预热到1 000K以后,原油在多孔介质内发生点火燃烧,最高温度可达1 210K,燃烧区温度稳定在750K左右,持续大约4h,燃烧在低供气量下无法向前推进;为保证火烧油层的燃烧波能持续传播,热源位置与空气入口应尽量布置在油层底部.Experiments of viscosity measurement and thermogravimetric analysis of crude oil were conducted to study the properties of viscosity and oxidation reaction kinetics parameters of crude oil.An indoor simulation experiment system of in-situ combustion was built,by which the ignition and stable combustion of crude oil in the porous medium were realized and the change of temperature was analyzed.The results show that crude oil viscosity decreases significantly with the drop of temperature,and the process of crude oil oxidation is divided into four stages,including light evaporation deposition,low-temperature oxidation reaction,sedimentation of fuel,and combustion.The ignition and stable combustion of crude oil in porous medium can be realized as the preheat temperature reaches 1 000 K.The highest burning temperature is up to 1 210 K,and the temperature in the center of combustion chamber stabilizes at about 750 K,which lasts for about four hours.It can be found that the combustion wave is difficult to move forward at a low amount of gas.In order to maintain a continuous combustion wave propagation,the location of heat source and air inlet should be arranged at the bottom of the reservoir.

关 键 词：火烧油层 过滤燃烧 多孔介质 实验 

分 类 号：TE352[石油与天然气工程—油气田开发工程]