摘要
潍北凹陷孔三段火山岩发现油气藏为潍北凹陷未来的油气勘探工作指出了新的方向,利用钻井、测井以及岩石分析化验等资料,研究了孔三段火山岩储层特征、地球化学特征和电性特征。通过岩石特征分析表明,玄武岩、安山玄武岩是潍北凹陷孔三段火山岩储层中最为发育的岩石类型,也是有利的储集岩石类型。孔三段火山岩以基性为主,属于钙碱性-碱性岩系列,火山岩起源于幔源型原生岩浆,曾经历了一定程度的分离结晶作用,受过大气中氧气的氧化。孔三段火山岩与上下围岩相比,具有钻时大、高密度、低感应电导率、低自然伽马、低声波时差等特征,是火山岩与砂泥岩识别的重要标志。
The discovery of hydrocarbon reservoirs in volcanic rocks of Kong-3 member provides a new direction for future oil and gas exploration work in Weibei sag.By using the drilling,logging and rock analysis laboratory data,the research on volcanic rock reservoir characteristics,geochemical characteristics and electrical characteristics has been carried out.The rock characteristics analysis results indicate andesite and andesite basalt are the most developed rocks in volcanic reservoir rock of Kong-3 member,and this is the most favorable reservoir rock type.Volcanic rock in Kong-3 member is mainly of basic type and belongs to calc-alkalic- alkaline rock series.Volcanic rocks in the primitive magma originated from mantle source type,and it has experienced a certain degree of separation and crystallization,the oxidation of oxygen in the atmosphere.Compared with surrounding rock up and down,volcanic rock in Kong-3 member has the characteristics of large drilling time,high density,low induction conductivity,low natural gamma and low acoustic time,and is an important symbol of volcanic rock and sand mudstone recognition.
出处
《石油地质与工程》
CAS
2016年第1期44-47,147-148,共4页
Petroleum Geology and Engineering
关键词
潍北凹陷
孔三段
火山岩
岩石学
电性特征
Weibei sag
Kong-3 member
volcanic rock
lithology
electrical characteristics
