几种煤层气含量测量方法的对比  

Comparison of Methods for Measuring Gas Content of CBM

作　　者：桑孝伟[1] 叶树刚[1] 芦俊[2] 王赞[2] 

机构地区：[1]中国地质大学(北京),北京100083 [2]中国科学院地质与地球物理研究所,北京100029

出　　处：《中国煤层气》2009年第3期27-31,共5页China Coalbed Methane

基　　金：国家自然基金委员会"多分量转换波地震勘探中的面波法静校正研究"(编号:40574055)项目;科技部973"深部煤炭资源赋存规律;开采地质条件与精细探测基础研究"项目课题七"深部煤岩多相地质体的地球物理响应"(编号:2006CB202207)资助

摘　　要：本文主要介绍几种现有的煤层瓦斯量的计算方法。在其基础上,以淮南顾桥矿区现有的资料为基础,运用其中两种方法对其煤层瓦斯含量进行计算。一种方法基于实验室解析数据,运用温度和压强对瓦斯吸附量的影响进行校正,得出校正值。另一种方法以测井、地震资料为基础,在地震反演数据的基础上,应用Langmuir方程来计算煤层的吸附瓦斯含量,并与其它方法做了对比。综合分析认为:基于地震反演数据基础上的Langmuir方程计算煤层吸附瓦斯量的方法与基于有限的单井计算得出整个煤层的瓦斯分布相比较,更能反映煤层沉积、构造及煤层气储层的细节。The paper mainly describes several existing methods for computation of coalbed methane quantity, based on which two methods are applied for calculation of the gas content of coal seam by using existing data from Guqiao mine in Huainan mine area. The first method is based on analytical data obtained from the laboratory. The results are corrected by using the influence of temperature and intensity of pressure on adsorption quantity, and the corrected value is then obtained. The other method is based on logging and seismic data. The overall analysis considers that when compared with other method which is applied for calculation of gas distribution in the entire coal seam based on limited single well computation data, the Langmuir equation method for calculation of seam adsorption gas quantity based on seismic inversion data, can better reflect the details of seam deposition, structure and coalbed methane reservoir.

关 键 词：煤层 瓦斯 煤层气 地震数据 LANGMUIR方程 

分 类 号：TD712.3[矿业工程—矿井通风与安全]