郑408块火烧油层物理模拟研究  

Physical modeling research of in-situ combustion in Zheng-408 fireflood pilot

作　　者：关文龙[1] 蔡文斌[2] 王世虎[2] 谢志勤[2] 曹钧合[3] 

机构地区：[1]胜利油田博士后科研工作站,山东东营257000 [2]胜利油田有限公司采油工艺研究院,山东东营257000 [3]胜利油田有限公司科技处,山东东营257015

出　　处：《石油大学学报（自然科学版）》2005年第5期58-61,共4页Journal of the University of Petroleum,China(Edition of Natural Science)

基　　金：中石化集团公司重大先导试验项目(P03001)

摘　　要：为了准确认识郑408块先导试验区的火驱动态,并深入研究敏感性稠油油藏火烧驱油机理,研制了新型一维火烧驱油物理模拟实验装置.采用郑408块地层岩心和地层原油进行了室内火烧油层物理模拟实验.结果表明,郑408块油藏点火温度为365～375 ℃,火烧前缘推进速度与注气强度呈正相关,在充分注气燃烧条件下,地层不会出现结焦现象;火烧之后岩石矿物组分改变有利于储层渗透性能的改善,但变化不大.实验证据显示,在燃烧带前缘存在高含油饱和度带,在该区域压降较其他区域集中.For accurately understanding the production behavior of Zheng-408 fireflcx：xt pilot in Shengli Oilfidd, a new onedimensional laboratory system was devised to reveal the deep mechanism of in-situ combustion in such sensitive heavy oil reservoir. Using real sandstone core and real crude oil, a series of experiments were carried out to simulate fire flooding process. According to the results of the experiments, the formation ignition temperature of Zheng-408 was precisely confirmed at 365 ℃ to 375 ℃. Advancement speed of the combustion front has positive correlativity with air injection rate. No coke comes into being in sandstone after complete combustion with plentiful air supplement. Composition of formation rock changed some little after burning, and high sensitive clay in rock turned into low sensitive to water. From laboratory evidences, the high oil saturation bank was formed in front of burning zone, and mainly producing pressure drop concentrated on the high saturated oil region during fire flooding.

关 键 词：火烧油层 物理模型 室内实验 点火温度 结焦 

分 类 号：TE357.44[石油与天然气工程—油气田开发工程]