徐家围子断陷徐东地区营城组火山岩储层特征研究  

STUDY ON VOLCANIC RESERVOIR CHARACTERISTICS IN YINGCHENG FORMATION OF XUDONG AREA IN XUJIAWEIZI FAULT DEPRESSION

作　　者：周玥[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《化工矿产地质》2009年第1期13-18,共6页Geology of Chemical Minerals

摘　　要：以营城组火山岩为主,利用岩心、测井、试油等资料,从岩性、岩相及物性等方面对徐家围子断陷徐东地区火山岩储层特征加以研究。徐东地区营城组火山岩储层的主要岩性为流纹岩、流纹质凝灰岩、流纹质熔结凝灰岩、流纹质角砾岩和流纹质角砾凝灰岩;火山岩相按岩性组合特征可分为火山爆发相、火山溢流相和火山沉积相;孔隙类型主要为原生孔隙的气孔、气孔被充填后的残余孔、裂缝及微裂缝和次生孔隙的长石溶蚀孔、火山灰溶蚀孔、球粒流纹岩中流纹质玻璃脱玻化产生的微孔隙、石英晶屑溶蚀孔等。通过对单井储地比、储层厚度频率分布、产能情况及成藏规律的分析研究将徐东地区分为三个储层发育带,找出了最有利的储层发育带,为下一步的勘探部署起到了一定的指导作用。Types of deep reservoir rich in Yingcheng formation of Xudong area in Xujiaweizi fault depression, the study of volcanic rocks of Yingcheng formation in the main, using the date of core, logging, oil test, from lithology, lithofacies and physical properties to study volcanic reservoir characteristics. The main lithology of volcanic reservoir in Yingcheng formation of Xudong area include rhyolite, rhyolitic tuff, rhyolitic tuff fused, rhyolitic breccia and rhyolitic tuff breccia. In accordance with lithology combination of features, volcanic facies can be divided into volcanic explosive facies, volcanic effusive facies and volcanic sedimentary facies. The main types of porosity have air vent of primary pore, remnants pores of air vent filled after, cracks, micro-cracks and feldspar corrosion hole of secondary porosity, volcanic ash corrosion hole, micro-pore produced by rhyolitic glass from glass off in spherules rhyolite, quartz crystal chip corrosion hole, and so on. Through studying the ratio of reservoir and formation for a single well, the frequency distribution of reservoir thickness, production capacity situation and pool-forming regularity, Xudong area can be divided into three reservoir development zone, so we will find out the most favorable reservoir development zone, then it can play a guiding role for the next step of the exploration deployment.

关 键 词：徐东地区 火山岩储层 孔隙类型 储层发育带 

分 类 号：P618.13[天文地球—矿床学]