具体用途蒙特卡罗代码McENL用于模拟超热中子寿命响应的工具

T. Prettyman, R. Gardner, K. Verghese
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引用次数: 0

摘要

描述了一个专用的蒙特卡罗代码,称为McENL,用于模拟超低温寿命工具的时间响应。该代码主要是为蒙特卡罗新手开发的,需要最少的输入准备。为了提高计算效率,采用了基于伴随扩散模型解的自动重要函数加权窗口技术。完整的成分和密度相关采样也包含在代码中,用于研究地层、井眼或测井工具成分和密度的微小变化对工具响应的影响。McENL是根据美孚脉冲中子孔隙度工具的测试井数据进行基准测试的。给出了实验验证结果和代码性能细节。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The specific purpose Monte Carlo code McENL for simulating the response of epithermal neutron lifetime tools
A specific-purpose Monte Carlo code, called McENL, for modeling the time response of epithermal lifetime tools is described. The code was developed primarily for the Monte Carlo neophyte and requires a minimum amount of input preparation. The weight windows technique, using an automated importance function based on the solution of an adjoint diffusion model, is used to improve the efficiency of the calculation. Complete composition and density correlated sampling is also included in the code and is used to study the effect on tool response of small variations in the formation, borehole, or logging tool composition and density. McENL was benchmarked against test-pit data for the Mobil pulsed neutron porosity tool. Results of the experimental validation and details of code performance are presented.<>
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