测井技术2025，Vol.49Issue(3)：401-410,10.DOI:10.16489/j.issn.1004-1338.2025.03.008
深地岩屑元素组分的激光诱导击穿光谱检测方法
The Elemental Analysis of Deep Earth Cuttings Based on Laser-Induced Breakdown Spectroscopy
摘要
Abstract
To address the demand for rapid in-situ detection of mineral and carbon elements in cuttings during ultra-deep hydrocarbon exploration,this study proposes an efficient elemental composition detection method based on laser-induced breakdown spectroscopy(LIBS).By systematically analyzing the characteristic spectral lines of carbonate rocks,sandstones,and mudstones,quantitative models are established for Si,Ca,Mg,Fe,Al and C elements.The experimental protocol employed a multi-point sampling and averaging strategy,with validation of detection accuracy conducted using X-ray fluorescence spectroscopy(XRF)and neutron capture logging data.The results demonstrate that the absolute prediction errors for major mineral elements(Si,Ca,Mg)do not exceed 3.20%,while the errors for Fe and Al elements remain below 0.31%.Furthermore,this method successfully achieved carbon element detection in cuttings from ultra-deep wells in the Tarim basin,showing consistent trends with mud logging data.This study confirms that LIBS technology can overcome the limitations of traditional methods in light element detection,providing a high-precision,multi-element synchronous analysis tool for ultra-deep hydrocarbon exploration.Its application holds significant value for rapid reservoir oil-bearing potential evaluation.关键词
测井解释/激光诱导击穿光谱/元素定量分析/油气页岩/超深井/中子俘获测井Key words
log interpretation/laser-induced breakdown spectroscopy/elemental quantitative analysis/shale oil and gas/ultra-deep well/neutron capture logging分类
天文与地球科学引用本文复制引用
郭清滨,胡伟,时铭鑫,郑鹏飞,吴迪,艾勇,陈民鑫,俞军..深地岩屑元素组分的激光诱导击穿光谱检测方法[J].测井技术,2025,49(3):401-410,10.基金项目
中国石油天然气集团有限公司关键核心技术攻关项目"移动式井场岩样集成连续测量成像系统研制"(2021ZG07) （2021ZG07）
能源陕西实验室基础研究中心开放课题"页岩组分现场快速检测的激光诱导击穿光谱检测技术及装置"(ESLB202414) （ESLB202414）
