荣兴屯地区中生界火山岩储层特征及其地球物理响应研究
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摘要
综合应用地震、录井、测井及分析化验等方法,对荣兴屯地区中生界火山岩储层的岩性、岩相、储集空间、物性及其地球物理响应进行了研究。结果表明,该区火山岩可分为安山岩、安山玢岩、凝灰岩和辉绿岩,其岩相主要为溢流相。储集空间既有原生孔缝,又有次生孔缝,以次生孔缝为主,属于低孔特低渗储层。影响储层物性的因素有火山岩相、风化壳、次生蚀变、火山岩岩性、构造运动等。通过对该区中生界火山岩的测井、地震相、振幅、频率、波阻抗等地球物理响应研究,来进行岩性识别和储层预测,进而指导勘探部署。
Application of sesmic,logging and chemical examination to Mesozoic volcanic reservoir in Rongxingtun area results in the identification of volcanic rocks sorts,which mainly is andesite,tuff and diabase and characterized overflow lithofacies.Reservoir spaces include the primary pore,secondary pore,and mostly are secondary structural fractures which is the low porosity and very low permeability.Effected factors are the volcanic lithofacies,weathering crust,secondary alteration,volcanic rock and tectogenesis.The study of geophysical response,such as logging response,seismic facies,amplitude,frequency and wave impedance,is helpful for recognizing and predicting volcanic rock.
引文
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