摘要
火烧油层是一项重要的稠油开采方式,日益成为蒸汽吞吐后稠油开发的重点接替技术之一。点火是火烧油层过程中的首要环节,为了考察油藏条件对点火燃烧的影响,提高点火的热效率和成功率,利用燃烧管实验研究了不同预热温度(210,220,230,260和300 ℃)、不同注气速度(3和0.188 L/min) 以及助燃剂对原油点火及燃烧过程的影响。实验结果表明,在满足一定通风强度的基础上,高预热温度有利于油层快速点燃,助燃剂可以改善原油燃烧状态。在辽河油区杜66北块火烧油层的矿场试验中,采用注蒸汽预热地层和助燃剂2种点火助燃技术,截至2011年底,该区块空气油比达到1696m3/m3,累积增油量超过1.3×104t,创经济效益超过1000×104元。
In-situ combustion is an important way of development mode on heavy oil reservoir, and it is increasingly becoming one of the key replacing technologies after steam soaking. Ignition is the first link in the process of in-situ combustion, in order to examine the different impact of reservoir conditions on ignition combustion and improve the thermal efficiency and success rate of ignition, the impacts for crude oil of different preheating temperature (210～300℃) , different flow rate and combustion adjuvant with combustion tube experiments are studied. It concluded that, based on a certain air flux, high preheating temperature is beneficial to reservoir fast ignition, and combustion adjuvant can improve the combustion status of crude oil. For in-Situ combustion test, preheating, combustion adjuvant technology is a simple and effective combustion ignition technology, so it is worthy of promotion and application.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2012年第4期53-55,114,共3页
Petroleum Geology and Recovery Efficiency
基金
陕西省教育厅科研计划项目"低渗油田高压注空气过程中原油氧化反应干预研究"(11JK0782)
西安石油大学博士启动基金项
关键词
室内实验
火烧油层
预热
助燃剂
点火
热力
采油
laboratory experiment
in-situ combustion
preheating
combustion adjuvant
ignition
thermal recovery
