测井曲线识别构造煤实例研究

发布时间：2018-05-19 19:07

  本文选题：构造煤 + 测井曲线　； 参考：《地球物理学进展》2017年03期

【摘要】：构造煤发育是发生煤与瓦斯突出的必要条件,常规构造煤识别方法存在效率低和准确率低等缺点.本文以芦岭煤矿Ⅱ六采区8煤层为研究目标,利用不同结构类型煤体的测井响应特征不同的特点,识别煤层中不同结构类型煤体.为了提高识别准确性,利用小波多尺度分析方法提取测井曲线中的低频分量和中频分量;再以低频分量和中频分量为输入,利用聚类分析法划分不同结构类型的煤体.通过识别,可以明显区分出目标层的原生煤、碎裂煤、碎粒煤和糜棱煤等四种结构类型煤体,同时也可以识别出煤层中的夹矸.以研究区中多钻孔识别的煤体类型为基础,绘制煤体结构三元相图,并将研究区划分为Ⅰ、Ⅱ、Ⅲ和Ⅳ等四类煤体结构组合类型区块.其中,Ⅲ类组合区块中构造煤最为发育,是煤与瓦斯突出的重点防治区.
[Abstract]:The development of tectonic coal is a necessary condition for coal and gas outburst, and the conventional structural coal recognition method has the disadvantages of low efficiency and low accuracy. In this paper, the target of this study is 8 coal seams in No. 2 sixth mining area of Luling Coal Mine. Different structural types of coal bodies are identified by using the different characteristics of logging response of different structural types of coal bodies. In order to improve the accuracy of identification, wavelet multiscale analysis method is used to extract the low frequency component and intermediate frequency component in the log curve, and then the low frequency component and the intermediate frequency component are used as input, and the cluster analysis method is used to divide the coal bodies of different structure types. Through the recognition, the coal bodies of primary coal, broken coal and mylonian coal can be distinguished obviously, and the gangue in coal seam can also be identified at the same time. Based on the type of coal body identified by multiple boreholes in the study area, the ternary phase diagram of coal body structure is drawn, and the study area is divided into four types of coal structure combination blocks: 鈪，

本文编号：1911287