Study On The Relationship Between Drill Logging Characteristics And Uraniu Mineralization In Sandstone-type Uranium Deposit

In this paper,the drilling and logging facies of in-situ leachable sandstone-type uranium deposits are studied and mainly research in Baolongshan area of the southwest Songliao Basin.Based on the comprehensive analysis the borehole logging data and the core geological record,Andcombined with the core geological record.The lithology and sedimentary facies of the target layer are divided.The distribution characteristics of gamma exposure rate mean value,variance and variation coefficient in target layer.To study its relationship with uranium mineralization,draw the conclusion and the following:(1)Through the comprehensive analysis of drilling and logging data,the drilling and study area can be divided into sedimentary facies.(2)The variation law of radioactive field in the area was analyzed and analyzed.The migration and enrichment degree,enrichment regularity and alteration mineralization characteristics of radioactive elements in formation and rock mass were analyzed and determined.Gamma ray irradiation rate average,mean square deviation and coefficient of variation are three stable and low value,which are non mineral environment;gamma ray logging rate is high,the mean square error,the variance coefficient is not stable,the irregular change is abnormal or mineralized environment;gamma logging irradiation rate mean,mean square error,coefficient of variation three stable and high value,the industrial was mineralization environment.according to the gamma ray logging exposure rate mean the size of uranium rich The increase of mean is the location of ore halo or ore body,and is an important horizon for ore prospecting(3)Analyze and summarize the characteristics of logging facies and uranium mineralization in the southwestern part of the Songliao Basin,and provide the basis for the next uranium ore prospecting work and forecast the prospecting area.Through the subsequent drilling and verification work,a number of industrial uranium holes have been found,and good prospecting results have been achieved.The validity of correlation between well logging facies and uranium mineralization is verified.