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使用激光诱导分解光谱学 (LIBS) 评估钻井芯中的度

François Vidal¹, Samira Selmani¹, Ismail Elhamdaoui¹

¹Institut National de la Recherche Scientifique, Centre Énergie Matériaux Télécommunications, Varennes, QC, Canada.

|May 19, 2025

概括

激光诱导分解光谱 (LIBS) 提供了快速的,现场的贵金属分析. 几千个随机测量可以准确地评估钻井芯中的度,比传统方法快得多.

科学领域:

分析化学分析化学
地质化学地质化学
材料科学材料科学材料科学

背景情况:

贵金属矿石评估传统上依赖于缓慢的,基于实验室的方法.
激光诱导分解光谱 (LIBS) 显示了快速,现场元素分析的潜力.
优化LIBS用于实际矿石分析需要了解测量变化.

研究的目的:

确定使用LIBS进行准确的度评估所需的测量次数.
评估测量数和位置对矿石样本LIBS精度的影响.
通过LIBS.调查测量噪声对度评估的影响.

主要方法:

来自富含的钻孔芯的LIBS数据的概率分析.
使用核心表面详细的激光扫描结果.
采用数学模型来计算分布的概率密度.
探索噪声对测量准确性的影响.

主要成果:

几千个LIBS随机测量为分析的核心样本提供了可靠的度评估,在有用的可信度范围内.
平均度的准确性与随机测量的数量直接相关.
对1米核心样本的LIBS分析可以在几分钟内完成,与传统技术的数小时/天形成鲜明对比.

结论:

LIBS是一种可行且高效的技术,用于快速在现场评估矿石中的度.
该研究为优化地质勘探中的LIBS采样策略提供了定量基础.
在采矿业务中,LIBS为贵金属分析提供了显著的节省时间的优势.

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