摘要
商河地区沙一段火成岩由多期水下火山喷发作用形成,岩石类型主要有火山角砾岩、凝灰岩、沉积火山碎屑岩和火山碎屑沉积岩类。根据火山岩的岩性、结构、构造等特征及其在纵横向上的变化,结合地震、测井、岩心等资料,可将该区火山岩相划分为:火山通道亚相、近火山口亚相、远火山口亚相和火山沉积亚相,其中,火山通道亚相主要为熔结火山角砾岩和少量火山熔岩,近火山口亚相主要为火山角砾岩和凝灰岩,仅见少量薄层正常沉积岩,远火山口亚相主要为火山角砾岩和凝灰岩夹正常沉积岩,火山沉积亚相主要为火山碎屑沉积岩。综观不同岩相带储集空间的发育特征认为,近火山口、远火山口亚相是有利储集相带。
The igneous rock which is distributied in the first member of Shahejie Formition in Shanghe Area is pyroelasties formed by several stages of volcanic eruption. After deposition, these pyroelasties become volcanic outbreak facies. On the base of the characteristics like lithology, composition, structure of igneous rock and their alteration in vertical and horizontal, and combined with seismic and well logging data, the igneous rock in this area can be elassifed into four sub-facies： volcanic vent sub-facies, near orifice of ejection, far orifice of ejection and volcanogenie sedimentation. The development features of reservoir space are different in different lithofacies belts. It is considered that the sub-facies of near and far volcanic vent is favorable reservoir development position.
出处
《断块油气田》
CAS
2008年第2期40-42,共3页
Fault-Block Oil & Gas Field
关键词
商河地区
沙一段
火山岩
储层特征
Shanghe Area, first member of Shahejie Formation, igneous rock, reservoir characteristics.
