利用地球化学测井—密度测井建立的孔隙度解释模型及其校正分析  

A POROSITY MODEL ACCORDING TO GEOCHEMIMICAL WELL-LOG-DENSITY WELL-LOG AND ANALYZING ON ITS CORRECTIONS

作　　者：朱世全[1] 黄思静[1] 彭东[2] 张小青[2] 胡作维[1] 

机构地区：[1]成都理工大学"油气藏地质及开发工程"国家重点实验室,成都610059 [2]成都理工大学沉积地质研究院,成都610059

出　　处：《物探化探计算技术》2006年第2期93-97,共5页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：地球化学测井能给出二十余种元素的含量,根据矿物组合模型、元素含量与矿物的转换关系可以得到岩石的矿物种类及其百分含量,然后得出比较准确的岩石骨架密度。由骨架密度、体积密度、流体密度联合建立孔隙度解释模型。由于骨架密度和体积密度均是动态变量,且都包含有碎屑、杂基、胶结物组分,模型中参数的地质含义和应用条件相互统一,从而使得计算的孔隙度值更加准确。Percentages of more than 20 elements in rock can be given by geochemical well-log,and percentages of minerals in rock can be calculated based on established model of rock constitution and conversion ratio between elements and minerals,then density of framework of rock can be calculated.Model of porosity can be established according to density of framework of rock,density of rock and density of fluid in rock.Because both density of framework of rock and density of rock are dynamic performance,and included same components of detritus,matrix,cement,and their connotation and applicable conditions are consistent,porosity calculated according to the model is more accurate.

关 键 词：地球化学测井 密度测井 孔隙度解释模型 骨架密度 校正分析 

分 类 号：P631.819[天文地球—地质矿产勘探]