基于岩性密度测井资料的页岩气储层生物硅含量确定方法  

Method for Determining Biogenic Silica Content in Shale Gas Reservoirs Based on Litho-density Logging Data

作　　者：冯亦江 何浩然 石文睿 FENG Yijiang;HE Haoran;SHI Wenrui(Jianghan Logging Company,Sinopec Matrix Corporation,Wuhan,Hubei 430073,China;Hong Kong Baptist University,Kowloon,Hong Kong 999077,China)

机构地区：[1]中石化经纬有限公司江汉测录井分公司,湖北武汉430073 [2]香港浸会大学,中国香港九龙999077

出　　处：《江汉石油职工大学学报》2024年第1期41-44,共4页Journal of Jianghan Petroleum University of Staff and Workers

摘　　要：页岩气储层中的生物硅亦称为生物成因硅,它的存在对页岩的孔隙发育和岩石的压裂性质具有重要影响,是页岩气富集和压裂产出的双重重要指标。基于测井岩性密度、测井光电吸收截面指数以及测井自然伽马,利用三元计算方程,形成了页岩气储层生物硅含量确定方法,评价结果能够满足现场页岩气储层测井解释和储层特征分析、可压性评价的需要,实际应用过程中取得良好的效果。Biogenic silica in shale gas reservoirs,also known as biogenic siliceous,has a significant impact on pore development and rock fracturing properties.It serves as a dual important indicator for shale gas enrichment and fracturing productivity.Based on litho-density logging,photoelectric absorption cross-section index,and GR logging data,a method for determining biogenic silica content in shale gas reservoirs was developed using a ternary calculation equation.The evaluation results meet the needs of on-site shale gas reservoir logging interpretation,reservoir characteristic analysis,and compressibility evaluation.The method has shown good results in practical applications.

关 键 词：页岩气 生物硅 岩性密度 自然伽马 三元计算方程 

分 类 号：P618.13[天文地球—矿床学]