模拟核测井工具响应的一种MC方法

计算物理 ›› 1996, Vol. 13 ›› Issue (2): 195-200.

模拟核测井工具响应的一种MC方法

晋长秋, 黄正丰

北京应用物理与计算数学研究所, 北京 100088

收稿日期:1994-11-21 修回日期:1995-11-02 出版日期:1996-06-25 发布日期:1996-06-25

A MONTE-CARLO METHOD FOR SIMULATING A NUCLEAR LOCKING TOOL

Jin Changqiu, Huang Zhengfeng

Institute of Applied Physics and Computational Mathematics, Beijing 100088

Received:1994-11-21 Revised:1995-11-02 Online:1996-06-25 Published:1996-06-25

摘要/Abstract

摘要： 描述了模拟双源距中子孔隙度测井工具响应的一种MC方法。在这个专用MC程序中,使用了几种有效方差降低技巧,如:隐吸收、权截断、能量截断、几何分裂和赌、方向偏倚等。针对这种核测井工具,将这些技巧作些改进;通过在程序中分别加上这几种方差降低技巧,对各自运行结果、精度、计算时间的分析和讨论,指出这些技巧的优缺点,亦证明了这些技巧确实有效;同时在某种程度上将此专用程序与通用程序做了比较。

关键词: MC方法, 几何分裂和赌, 方向偏倚, 专用程序, 双源距孔隙度测井工具

Abstract: Monte-Carlo method for simulationg the responses of a dual-space neutron porosity oil well-logging tool is developed and presented.For practical computations,the specific Monte-Carlo code introduced here uses implicit capture、weight and energy cut off、geometric splitting and Russian roulette and directional biasing techniques as primary variance reduction methods.Some of the techniques have been improved partly.Numerical tests of practical examples are discussed and analyzed,which confirmed the effectiveness of these techniques.

Key words: M.C method, geometric splitting and Russian rouletts, directional biasing, specific M.C code, dual-space neutron porosity oil well-logging tool

中图分类号:

TE15
O242.1

晋长秋, 黄正丰. 模拟核测井工具响应的一种MC方法[J]. 计算物理, 1996, 13(2): 195-200.

Jin Changqiu, Huang Zhengfeng. A MONTE-CARLO METHOD FOR SIMULATING A NUCLEAR LOCKING TOOL[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 1996, 13(2): 195-200.

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