用元素测井资料计算变质岩矿物含量方法  

A Method for Calculating Mineral Content of Metamorphic Rock with ECS Logging Data

作　　者：史鹏宇 王春燕[2] 闫伟林[2] 杨黎明[2] 张素荣 SHI Pengyu;WANG Chunyan;YAN Weilin;YANG Liming;ZHANG Surong(College of Geosciences,Northeast Petroleum University,Daqing,Heilongjiang 163318,China;Daqing Oilfield Exploration and Development Research Institute,Daqing,Heilongjiang 163712,China;China Petroleum Exploration and Development Research Institute,Beijing 100083,China)

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]大庆油田勘探开发研究院,黑龙江大庆163712 [3]中国石油勘探开发研究院,北京100083

出　　处：《测井技术》2019年第6期597-600,共4页Well Logging Technology

摘　　要：松辽盆地古中央隆起带变质岩岩石类型复杂,矿物成分构成变化大,测井响应规律性差,通过常规测井方法进行矿物识别较难,需借助成像测井资料及声波测井资料,但对于测井响应相似的地层,仍无法判断其矿物组成.元素俘获能谱测井能够提供多种地层元素的相对含量,提供从元素到矿物组成的新评价方法.应用全岩分析、元素分析资料,多方法结合刻度变质岩储层矿物与元素的转换系数,并建立多矿物模型,应用最优化方法定量计算地层矿物含量.与经验转换系数对比,刻度后的转换系数计算的矿物含量与全岩分析结果一致性更好,验证了该方法在这一地区的有效性.The metamorphic rocks in the ancient central uplift zone in the Songliao Basin are complex,the mineral composition changes largely,and the logging responses are less regular.It is difficult to identify the minerals by a conventional logging method.Imaging logging data and acoustic logging data are better,but for formations with similar logging responses,they are ineffective to identify the mineral composition.ECS logging data can provide the relative contents of different formation elements.It is a new method from evaluating elements to mineral composition.This paper calculates the transformation coefficient of elements to minerals in the metamorphic reservoirs by multiple methods based on whole rock analysis and element analysis,then establishes a multimineral model,and finally uses an optimal method to quantitatively calculate the mineral content.The mineral content calculated by the new conversion coefficient is more consistent with whole-rock analysis results than an empirical conversion coefficient.It is effective in the Songliao Basin.

关 键 词：测井解释 元素俘获测井 最优化方法 矿物组分含量 转换系数 

分 类 号：P631.84[天文地球—地质矿产勘探]