超细金属催化剂改善稠油火烧效果实验研究

油气藏评价与开发 ›› 2019, Vol. 9 ›› Issue (4): 36-40.

超细金属催化剂改善稠油火烧效果实验研究

张弦¹,车洪昌²,刘以胜²,陈鑫²

^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

收稿日期:2018-09-28 发布日期:2019-08-28 出版日期:2019-08-26
作者简介:张弦（1983 —）,女,博士,副教授,稠油开采的教学和科研。通讯地址：黑龙江省大庆市高新技术开发区东北石油大学石油工程学院,邮政编码：163318。E-mail: zhangxianer@163.com
基金资助:
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)

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

ZHANG Xian¹,CHE Hongchang²,LIU Yisheng²,CHEN Xin²

1.Petroleum Engineering Institute, Northeast Petroleum University, Daqing, Heilongjiang 163318, China
^2. Rumaila Project of PetroChina International Middle East Company, Beijing 100120, China

Received:2018-09-28 Online:2019-08-28 Published:2019-08-26

摘要/Abstract

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。

关键词: 稠油, 火烧油层, 超细粒子, 金属氧化物, 催化

Abstract:

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 guiding significance for expanding the application of heavy oil recovery by in-situ combustion.

Key words: heavy oil, in-situ combustion, ultra-fine particle, metal oxides, catalyze

中图分类号:

TE345

张弦,车洪昌,刘以胜等. 超细金属催化剂改善稠油火烧效果实验研究[J]. 油气藏评价与开发, 2019, 9(4): 36-40.

Xian ZHANG,Hongchang CHE,Yisheng LIU, et al. Improved efficiency of in-situ combustion by application of submicro metal oxides particles[J]. Reservoir Evaluation and Development, 2019, 9(4): 36-40.

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类别	粒径/nm	BET表面积/（m²·g^-1）
NiO	80~130	105
α·Fe₂O₃	100~250	43
Co₃O₄	200~500	41

样品	活化能/kJ	50 %转化率,f
稠油	134.34	0.005（390 ℃）
稠油+NiO	90.74	0.079（330 ℃）
稠油+α·Fe₂O₃	106.52	0.092（330 ℃）
稠油+Co₃O₄	78.38	0.026（330 ℃）