超细金属催化剂改善稠油火烧效果实验研究  

Improved efficiency of in-situ combustion by application of submicro metal oxides particles

作　　者：张弦[1] 车洪昌 刘以胜 陈鑫 ZHANG Xian;CHE Hongchang;LIU Yisheng;CHEN Xin(Petroleum Engineering Institute,Northeast Petroleum University,Daqing,Heilongjiang 163318,China;Rumaila Project of PetroChina International Middle East Company,Beijing 100120,China)

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163318 [2]中国石油中东公司鲁迈拉项目,北京100120

出　　处：《油气藏评价与开发》2019年第4期36-40,共5页Petroleum Reservoir Evaluation and Development

基　　金：中国石油科技创新基金研究项目“烃类溶剂辅助火驱原位催化改质超稠油技术研究”（2018D-5007-0212）;东北石油大学“国家基金”培育基金项目“稠油火烧过程焦炭形成机制及其在多孔介质中的精细表征”（2018GPQZ-04）

摘　　要：为了明确超细过渡金属催化剂对稠油火烧效果的影响,应用热分析及等转化率方法对NiO、α·Fe2O3和Co3O4三种超细过渡金属粒子进行火烧氧化动力学评价,并应用优选出的催化剂开展一维火驱实验。实验结果表明,在Co3O4存在的条件下,稠油活化能降低幅度最大,达41.7%,且Co3O4催化活性较高,适合作为火驱实验的催化剂。与纯火驱相比,Co3O4催化条件下原油的高温氧化反应得到强化,氧气利用率提高6.79%,燃烧时间缩短11.8%,燃烧前缘平均温度提高20℃,燃烧前缘最大温度差降低4℃,燃烧更加稳定,且前缘推进速度加快了0.042 cm/min,最终驱油效率提高5.7%,产出油降黏率提高7.2%。研究成果对拓展火烧油层开采稠油的应用具有重要的指导意义。In order to identify the effect of ultra-fine transition metal catalyst on the in-situ combustion of heavy oil,thermal analysis and isoconversional method were used to evaluate the burning oxidation kinetics of three ultra-fine transition metal particles—NiO,α·Fe2O3 and Co3O4.And then,one-dimensional in-situ combustion experiment was carried out by the optimized catalyst.The experimental results showed that,in the presence of Co3O4,the activation energy of heavy oil decreased the most,up to 41.7%.Meanwhile,Co3O4 had higher catalytic activity,that made it suitable for in-situ combustion experiment.Compared to conventional in-situ combustion,high temperature oxidation reaction of crude oil was enhanced under the catalytic condition of Co3O4.The oxygen utilization ratio increased by 6.79%,the combustion time shortened by 11.8%,the average temperature of the leading edge of combustion increased by 20℃,the maximum temperature difference of the leading edge of combustion reduced by 4℃,the combustion was more stable,the advance speed of the leading edge increased by 0.042 cm/min,the final oil displacement efficiency increased by 5.7%,and the viscosity reduction rate of the produced oil increased by 7.2%.The research results have important guid?ing significance for expanding the application of heavy oil recovery by in-situ combustion.

关 键 词：稠油 火烧油层 超细粒子 金属氧化物 催化 

分 类 号：TE345[石油与天然气工程—油气田开发工程]