松辽盆地长岭断陷火山岩储层特征  

Characteristics of volcanic rock reservoirs in the Changling rift,Songliao Basin,China

作　　者：徐宏节[1] 

机构地区：[1]中国石油化工股份有限公司东北油气分公司,长春130062

出　　处：《成都理工大学学报（自然科学版）》2010年第4期432-437,共6页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：中国石油化工股份有限公司科技项目

摘　　要：松辽盆地南部长岭断陷火山岩储层主要发育于下白垩统营城组,在火石岭组部分发育。通过对钻井岩心样品的观察研究,确认储集空间主要有孔隙和裂缝两大类,孔缝组合类型有:孔隙型、裂缝孔隙型、孔隙裂缝型和裂缝型。实测的储层孔隙度为0.14%～26.00%,渗透率为(0.01～79.30)×10-3μm2,表明储层物性相差大、非均质性强。从压汞曲线数据获得的孔隙度为2%～10%,渗透率为(0.06～0.26)×10-3μm2,表现为中低孔、特低渗储层。原地火山角砾岩为物性最好的火山岩储层,其次是凝灰岩和流纹岩。The volcanic rock reservoirs mainly develop in Lower Cretaceous Yingcheng Formation and in very few parts of Huoshiling Formation in the Changling rift in the south of Songliao Basin. By observing and researching the samples of drill core, it is confirmed that the fractures and pores are important reserving spaces in the reservoirs. The types and combinations of the pores and fractures include the pore-type, fracture-pore-type, pore-fracture-type, and fracture-type. The measured reservoir porosity is 0.14 %-26.00%, and permeability （0.01 - 79.30） ×10^-3μm^2 , indicating that the reservoir properties have great differences and strong heterogeneities. From the data of mercury- injection curves, the porosity is 2 %-10%, and the permeability （0.06-0.26）×10^-3μm^2 indicating that the reservoirs are medium to low porosity and ultra-low permeability reservoirs. The volcanic breccia in situ is the best volcanic rock reservoir, and tuff and rhyolite are the secondary.

关 键 词：松辽盆地 火山岩 储层 孔隙度 渗透率 

分 类 号：TE122.222[石油与天然气工程—油气勘探]