Seismic studies of coal bed methane content in the west coal mining area of Qinshui Basin

作     者：Zou Guangui Peng Suping Yin Caiyun Xu Yanyong Chen Fengying Liu Jinkai 

作者机构：State Key Laboratory of Coal Resource and Safe MiningChina University of Mining&Technology 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2013年第23卷第6期

页      面：795-803页

核心收录：

学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 0709[理学-地质学] 0819[工学-矿业工程] 0808[工学-电气工程] 081903[工学-安全技术及工程] 08[工学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：supported by the National Basic Research Program of China(Nos.2009CB219603,2010CB226800,2009CB724601 and 2012BAC10B03) the National Natural Science Foundation of China(Major Program)(Nos.50490271 and 40672104) the National Natural Science Foundation of China(General Program)(No.40874071) the National Science&Technology Pillar Program in the Eleventh Five-Year Plan Period(Nos.2012BAB13B01 and2012BAC10B03) the Key Grant Project of Chinese Ministry of Education(No.306002) 

主　　题：Coal bed methane content Amplitude versus offset AVO attribute Correlation coefficient 

摘      要：The coal bed methane content(CBMC)in the west mining area of Jincheng coalfield,southeastern Qjnshui Basin,is studied based on seismic data and well-logs together with laboratory *** results show that the Shuey approximation has better adaptability according to the Zoeppritz equation result;the designed fold number for an ordinary seismic data is sufficient for post-stack data but insufficient for pre-stack data regarding the signal to noise ratio(SNR).Therefore a larger grid analysis was created in order to improve the *** velocity field created by logging is better than that created by stack velocity in both accuracy and effectiveness.A reasonable distribution of the amplitude versus offset(AVO)attributes can be facilitated by taking the AVO response from logging as a standard for calibrating the amplitude *** AVO attributes have a close relationship with *** worst attribute is polarization magnitude,for which the correlation coefficient is 0.308;and the best attribute is the polarization product from intercept,of which the correlation coefficient *** predicted by AVO attributes is better overall than that predicted by direct interpolation of CBMC;the validation error of the former is 14.47%,which is lower than that of the latter 23.30%.CBMC of this area ranges from2.5 m^3/t to 22 m^3/*** CBMC in the syncline is over 10m^3/t,but it is below 10m^3/t in the anticline;on the whole,CBMC in the syncline is higher than that in anticline.