岩性和煤质最优化变尺度法分析

本文简要地介绍了利用最优化变尺度法进行岩性(或煤质)分析的基本原理,并对测井目标函数中的重要技术参数、迭代求解的收敛准则、迭代初值等的选取进行了探讨,提出了一套选取原则.通过改变某些技术参数的计算结果,分析和比较几种重要变尺度法的收敛速度等重要技术指标,提出了进行岩性和煤质分析的最佳变尺度法.同时对变尺度法进行此种分析可能存在的问题进行了讨论,并提出了克服的方法.

ANALYSIS OF LITHOLOGY AND COAL QUALITY WITHTHE .OPTIMIZEO SCALE TRANSFORMATION METHOD

This paper describes briefly the basic principles for analysing lithologyand coal quality with the optimized scale transformation method, and discus-ses tentatively important technical parameters in logging objective function,convergence criteria in iterative solution process and initial iterative valueswith a suite of principles for their selection put forward. Based on calculati-ons for changing some technical parameters, we have analysed and comparedmajor technical indices (such as convergence rate) of some important scaletransformation methods, and advanced the best scale transformation methodfor analysing lithology and coal quality. In addition, a discussion is made onsome troubles that might occur in conducting such analysis with the scaletransformation method, with the means for overcoming these troubles sugge-sted.