| 指向概率方法在中子伽马测井计算中的应用 |
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| 引用本文： | 仇维勇,裴鹿成.指向概率方法在中子伽马测井计算中的应用[J].中国石油大学学报(自然科学版),1992(2). |
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| 作者姓名： | 仇维勇 裴鹿成 |
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| 作者单位： | 石油大学勘探系
(仇维勇)，中国原子能科学研究院(裴鹿成) |
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| 摘 要： | 应用蒙特卡罗方法,成功地模拟了中子伽马测井的物理过程和中子的输运过程、热中子的俘获以及中子伽马射线的产生和输运过程.用指向概率方法计算了中子伽马射线对探洲器的通量贡献,用群截面数据库模拟中子,用点截面数据模拟伽马光子,计算绘出的中子伽马能谱峰值与所选择的特征能量非常吻合,从而证明了蒙特卡罗方法在核测井领域应用的可行性.
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| 关 键 词： | 中子伽马测井 概率 中子探测器 中子伽马通量 |
APPLICATION OF DIRECTION PROBABILITY IN NEUTRON-GAMMA WELL LOGGING MEASUREMENT |
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| Qiu Weiyong Pet Lucheng.APPLICATION OF DIRECTION PROBABILITY IN NEUTRON-GAMMA WELL LOGGING MEASUREMENT[J].Journal of China University of Petroleum,1992(2). |
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| Authors: | Qiu Weiyong Pet Lucheng |
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| Institution: | Dept. of Petroleum Exploration |
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| Abstract: | Monte Carlo method was successfully used to simulate the physical process of neutron-gamma well logging including the emission and transport of neutrons, the capture of thermal neutrons, and the generation and transport of photons. The Neutron-gamma flux to the detector was calculated with a direction probability method. The multiple group neutron cross-section data were used in the transport of neutrons, and the point cross section data were used in the transport of photons. The calculated values of the photon energy peak were in good agreement with the selected value. |
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| Keywords: | Neutron-gamma well logging Probability Neutron detector Neutron-gamma flux |
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