江汉盆地火山岩气孔发育规律及其储集性能  

Pores Development and Reservoir Properties of Volcanic Rocks in Jianghan Basin

作　　者：闰春德 俞惠隆[1] 余芳权[1] 王典敷[1] 

机构地区：[1]江汉石油学院石油地质系,江汉石油管理局勘探开发研究院

出　　处：《江汉石油学院学报》1996年第2期1-6,共6页Journal of Jianghan Petroleum Institute

摘　　要：按成因以及形态、产状等特征将江汉盆地下第三系火山岩气孔划分为逸出孔、膨胀孔、爆炸孔和蠕变孔４种成因类型。探讨了控制江汉盆地下第三系火山岩中气孔发育规律的各种因素，认为火山岩相、喷发环境、构造、埋藏以及剥蚀面是影响该盆地火山岩气孔发育规律的主要因素。论证了气孔与火山岩储层的关系，结果表明，该盆地火山岩气孔的面孔率远高于其他孔隙类型，在裂缝或拉长气孔的连通下，可以作为火山岩储层的主要储集空间。对江汉盆地下第三系火山岩分析资料的统计表明，火山岩储层中气孔含量与储层物性呈正比，即气孔对火山岩储层的储集性能具有重要作用。as pores of volcanic rocks(Paleogene)in the Jianghan basin are classified into escape,expansion, explosion and creep pore types according to genesis,shape and occurrence.Five factors influencing pores development of the volcanic rocks are analysed,they are volcanic factes,eruptive environment,structure,burial and erosion. The relationship between pores development and volcanic reservoir is discussed. The porosity for the gas pores is much larger than other pore types in the volcanic rocks in this area.The gas pores connected by fractures and elongated pores can act as a major reservoir space.Stasistical analysis for petrophysical data from the rocks shows their petrophysical properties to be related to the content of the gas pores.

关 键 词：储集层 火山岩 火成岩油气藏 孔隙类型 江汉盆地 

分 类 号：P618.130.2[天文地球—矿床学]