摘要
根据岩屑录井、岩心和薄片资料研究表明,南堡凹陷第三系火山岩尤其是玄武岩和凝灰岩电性特征差异较大。应用交会识别技术并借鉴前人对阿根廷凝灰岩测井响应特征研究时所作的M-N关系图版,可将南堡凹陷第三系凝灰岩大致分为流纹凝灰岩、英安凝灰岩、粗玄凝灰岩和玻玄凝灰岩4种类型,而根据薄片资料,从结构特征将玄武岩细分为粗玄岩、间隐玄武岩和玻基玄武岩3种类型。
It’s indicated from cutting logging,core and thin-section data that there is a big different for the electrical properties of Triassic volcanic rocks,Napu Sag,especially for basalt and tuff.Based on the cross-plot identification technology and the M-N relation chart of logging response for Argentina tuff,Triassic volcanic rocks in Napu Sag can be named as rhyolite tuff,dacite tuff,trachybasalt tuff and boninites tuff individually.Meanwhile,based on the thin-section data,basalt can be structurally subdivided into trachybasalt,intersertal basalt and vitrobasalt.
出处
《天然气技术》
2009年第5期3-5,7,共4页
NATURAL GAS TECHNOLOGY
