| 大颗粒黏土矿物对黏土矿物X射线衍射定量分析的影响 |
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| 引用本文： | 解古巍,叶美芳,黄静,王小琳,南珺祥,任志鹏,石小虎,柳娜.大颗粒黏土矿物对黏土矿物X射线衍射定量分析的影响[J].岩矿测试,2018,37(5):499-506. |
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| 作者姓名： | 解古巍 叶美芳 黄静 王小琳 南珺祥 任志鹏 石小虎 柳娜 |
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| 作者单位： | 中国石油长庆油田分公司勘探开发研究院;低渗透油气田勘探开发国家工程实验室;中国地质调查局西安地质调查中心 |
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| 摘 要： | 现行X射线衍射分析黏土矿物都是提取粒径小于2μm的悬浮溶液检测样品的黏土矿物组合及含量,含量数据有时与其他检测数据相悖。在鄂尔多斯盆地黏土矿物研究中,通过偏光显微镜和扫描电镜发现存在粒径大于2μm的黏土矿物颗粒,特别是高岭石的粒径多为3～10μm,这些大颗粒黏土矿物会造成含量数据不准确。为了证明大颗粒黏土矿物对其含量测量的影响,本文设计了不同粒径标准的提取物对比试验:随机选取267个样品,每个样品分别按照10μm和2μm标准提取两份悬浮溶液制成测试片,采用SY/T5163—2010行业标准中的检测方法得到10μm和2μm提取物的黏土矿物组合及含量。通过对比发现大颗粒黏土矿物对各类黏土矿物的相对含量测量结果有明显影响:10μm提取物中高岭石含量明显增大;伊利石/蒙脱石间层矿物含量显著降低;伊利石含量的变化小且无规律;绿泥石含量整体变化较小,少量样品中绿泥石含量发生了明显的偏离,与大颗粒高岭石的赋存有关。本研究提出应结合地质状况和工作目的审慎选择提取粒径的标准,对SY/T 5163—2010中的黏土矿物提取粒径标准作出修订。
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| 关 键 词： | 大颗粒 粒径 黏土矿物含量 高岭石 X射线衍射法 |
| 收稿时间： | 2017/8/19 0:00:00 |
| 修稿时间： | 2018/3/24 0:00:00 |
The Impact of Large Grain Clay Minerals on X-ray Diffraction Quantitative Analysis of Clay Minerals |
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| XIE Gu-wei,YE Mei-fang,HUANG Jing,WANG Xiao-lin,NAN Jun-xiang,REN Zhi-peng,SHI Xiao-hu and LIU Na.The Impact of Large Grain Clay Minerals on X-ray Diffraction Quantitative Analysis of Clay Minerals[J].Rock and Mineral Analysis,2018,37(5):499-506. |
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| Authors: | XIE Gu-wei YE Mei-fang HUANG Jing WANG Xiao-lin NAN Jun-xiang REN Zhi-peng SHI Xiao-hu and LIU Na |
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| Institution: | Institute of Exploration, Development and Research of PetroChina Company Limited Changqing Oilfield Branch, Xi''an 710018, China;National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields, Xi''an 710018, China,Xi''an Center of China Geological Survey, Xi''an 710054, China,Institute of Exploration, Development and Research of PetroChina Company Limited Changqing Oilfield Branch, Xi''an 710018, China;National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields, Xi''an 710018, China,Institute of Exploration, Development and Research of PetroChina Company Limited Changqing Oilfield Branch, Xi''an 710018, China;National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields, Xi''an 710018, China,Institute of Exploration, Development and Research of PetroChina Company Limited Changqing Oilfield Branch, Xi''an 710018, China;National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields, Xi''an 710018, China,Institute of Exploration, Development and Research of PetroChina Company Limited Changqing Oilfield Branch, Xi''an 710018, China;National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields, Xi''an 710018, China,Institute of Exploration, Development and Research of PetroChina Company Limited Changqing Oilfield Branch, Xi''an 710018, China;National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields, Xi''an 710018, China and Institute of Exploration, Development and Research of PetroChina Company Limited Changqing Oilfield Branch, Xi''an 710018, China;National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields, Xi''an 710018, China |
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| Abstract: | |
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| Keywords: | large grain grain size content of clay minerals kaolinite X-ray Diffraction |
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