酸性火山岩储层微观孔隙结构及物性参数特征  

Characteristics of microscopic pore structure and physical property parameter in acidic volcanic reservoir

作　　者：庞彦明[1] 章凤奇[2] 邱红枫[1] 战剑飞[1] 

机构地区：[1]中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]浙江大学地球科学系,浙江杭州310027

出　　处：《石油学报》2007年第6期72-77,共6页Acta Petrolei Sinica

基　　金：中国石油天然气股份有限公司科技攻关项目(P060125)"特殊岩性油藏开发技术"部分成果

摘　　要：综合利用大量铸体薄片及储层物理实验资料,对松辽盆地北部营城组酸性火山岩储集空间与物性参数特征的研究结果表明,酸性火山岩储层储集空间以原生气孔和次生溶蚀孔为主,微观孔隙结构具有孔喉比超大的特征。该区酸性火山岩储层具有束缚水饱和度高、存在启动压力梯度等特低渗透储层的渗流特征,储层物性对应力不敏感。The reservoir space and physical property parameters of the acidic volcanic rock of Yingcheng Formation in the northern Songliao Basin were investigated using a large amount of data from cast slice and reservoir physical test. It is showed that the reservoir space of acidic volcanic rock is dominated by primary gas cavity and secondary karst （emposieu）, and the micro pore structure is characterized by super large pore-throat ratio. The acidic volcanic rock reservoir has the filtering flow characteristics of the low-permeability reservoirs, such as high irreducible water saturation and threshold pressure gradient. The physical property of the acidic volcanic reservoir is not sensitive to stress.

关 键 词：酸性火山岩 微观孔隙结构 孔喉比 渗流特征 低渗透储层 营城组 松辽盆地 

分 类 号：TE112.23[石油与天然气工程—油气勘探]