Title

Analysis of log properties based on isochronal stratigraphic framework

单位

1吉林大学地球科学学院,吉林长春130061；2中国石油天然气股份有限公司吉林油田分公司勘探开发研究院,吉林松原138003

Organization

College of Earth Sciences,Jilin University;Changchun 130061,China

摘要

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。

Abstract

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.

关键词：

层序地层; 等时地层格架; 测井属性; 岩性描述; 沉积相分析; 储层预测;

Keywords:

sequence stratigraphy; isochronal stratigraphic framework; log properties; lithology description; sedimentary facies analysis; reservoir prediction;

基金项目

DOI