火烧油层技术研究现状与应用前景  

Laboratory experiment situation on in-situ combustion and the application prospects

作　　者：黄俊[1] 鲁军辉 张誉才 

机构地区：[1]长江大学石油工程学院油气钻采工程湖北省重点实验室,湖北武汉430100 [2]上海海洋石油局第三海洋地质调查大队,上海200137 [3]湖北省天然气发展有限公司,湖北武汉430000

出　　处：《石油化工应用》2013年第7期1-5,16,共6页Petrochemical Industry Application

基　　金：中国石化股份公司华北分公司科技项目;项目编号:G13KJ-11-ZS-QT-ZJ-0013

摘　　要：火烧油层燃烧复杂,难以精确描述。介绍了从室内研究向现场推广的综合研究流程及利用等转化率分析判定火烧油层成功与否的方法,回避了因碳氢化合物氧化反应模拟困难而导致的难以准确建立燃烧速度方程的问题。总结了利用SARA组分模型研究组分效应及组分对反应路径影响的实验,研究表明沥青质最难氧化,饱和烃最易氧化;高氧气浓度有利于提高采收率,抑制高温裂解反应。分析了考虑含水的燃烧管实验,证实湿式燃烧热能利用率更高,在建立火烧油层模拟模型时要考虑含水的影响。介绍了利用圆锥形燃烧反应器进行燃烧管实验研究最小空气通量的方法,在空气通量低至3m3/(m2·h),实验压力3.55MPa时不仅维持了阿萨巴斯卡沥青砂燃烧前缘的推进,而且70%的初始油以液态产出。概述了火烧油层与SAGD相结合,采用富氧燃烧工艺或在注入介质中加入催化剂、泡沫等应用前景。In-situ combustion is difficult to describe accurately, due to its complicated combustion process. A comprehensive workflow on upscaling the laboratory research to field dimension was introduced in this paper. Isoconversional analysis method was used to predict the likelihood of a successfully combustion at the reservoir scale, which method avoids accurately simulating the hydrocarbons oxidation reaction to establish burning velocity equations.The experiment in which SARA component model was used to discuss compositional effects and their effect on reaction path was summed up. The results show that asphaltene is the most difficult to be oxidized, while saturated hydrocarbon is the easiest.Also, high concentration of oxygen is beneficial to improve the recovery rate, as well as inhibiting pyrolysis reaction. Analysis of considering aqueous combustion tube experiments confirmed that the heat energy utilization rate is higher in wet combustion, therefore, water shall be included in building fire simulation model. Combustion tube experiment using conical combustion cell was introduced as well, in which the Athabasca bitumen combustion front was sustained with the operating pressure of 3.55 MPa and air flux as low as 3m3/（m2 ·h）, and 70 % of the initial oil was produced as liquid product. Finally, the prospect of in-situ combustion application was overviewed, including the combination with SAGD, adopting oxygen enriched combustion technology or injected with the catalyst, foam and so on.

关 键 词：火烧油层 等转化率分析 SARA组分模型 最小空气通量 燃烧管实验 

分 类 号：TE357.44[石油与天然气工程—油气田开发工程]