CAJ | 학술논문

目前基于测井资料的多井地质分析还多以人工分析为主,不仅费力耗时,且人为误差较大.等时地层格架下的测井属性分析原理是,在单井层序地层划分与对比的基础上,建立研究区沉积地层的等时地层格架;将研究区多口井同一层序内的测井数据分成若干个等时时窗,用测井属性(测井数据的平均值、最大值、最小值、均方差或变差方差根等)描述每个时窗内的测井数据;最后,基于单井的测井属性值,通过插值方法得到某等时地层单元的测井属性平面图.在伊通地堑岔路河地区,利用测井属性与岩性之间的对应关系,结合岩心和录井资料,进行了沉积相分析和储层预测.
목전기우측정자료적다정지질분석환다이인공분석위주,불부비력모시,차인위오차교대.등시지층격가하적측정속성분석원리시,재단정층서지층화분여대비적기출상,건립연구구침적지층적등시지층격가;장연구구다구정동일층서내적측정수거분성약간개등시시창,용측정속성(측정수거적평균치、최대치、최소치、균방차혹변차방차근등)묘술매개시창내적측정수거;최후,기우단정적측정속성치,통과삽치방법득도모등시지층단원적측정속성평면도.재이통지참차로하지구,이용측정속성여암성지간적대응관계,결합암심화록정자료,진행료침적상분석화저층예측.
At present,logging data based multi-log geological analysis mostly depends on manual work,which is time-consuming and has large artificial error.The analysis of log properties based on isochronal stratigraphic framework has the following steps:firstly based on the stratigraphic sequence classification and correlation from single well,isochronal stratigraphic framework for the area is constructed;then the logging data in the same sequence is divided into some isochronal time windows,and log properties (mean,maximum,minimum,positive bias,mean-square deviation or variation variance root) are used to describe the logging data in every time window;finally,the plan of log properties in an isochronal stratigraphic unit is obtained by interpolation based on log properties of single well.At Chaluhe area in Yitong Graben,the relationship between log properties and lithology combining with core and well logging data was used for sedimentary facies analysis and reservoir prediction.