应用测井资料自动确定岩性的计算机程序

A COMPUTER PROGRAM FOR AUTOMATIC DETERMINA-TION OF LITHOLOGY FROM WELL LOGS

在复杂岩性地层的测井资料解释工作中,用常规的双矿物模型已无法对地层岩性进行准确的分析。为此,设计了应用测井资料自动确定岩性的计算机程序。该程序应用常规测井资料,使用取芯井段选择标准层,建立各种岩性模式,根据这些模式对未取芯井段或井进行逐层岩性统计判别,绘出一个完整而连续的岩性剖面。文中以 X 地区 Y 构造 B 井为例,说明这一程序在应用测井资料自动确定岩性方面具有较高的精度。

This paper deals with a computer program for automatic determination of lithology from well logs. It includes six parts: depth matching, environmental correction, parameter reducing, automatic zonation, lithologic classification and discrimination.This program makes use of well logs. Chosing the cored member as a key stratum for establishing various lithologic models, from these models lithologic discrimination is carried out stratum by stratum, with the result in drawing out a complete and continuous lithologic column.In the paper, a case of the determination of well B on Y structure in X region, in order to illustrate the high accuracy of this discrimination analysis.