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《Journal of China Coal Society》 2011-05
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Identification on the type of coal rank by using geophysical well logging data

MAO Zhi-qiang1,2,ZHAO Yi1,2,SUN Wei1,2,CAI Wen-yuan3,LUO An-yin3,ZHAO Yong-chang3(1.Beijing Key Laboratory of Earth Prospecting and Information Technology,Beijing 102249,China;2.College of Geophysice and Information Engineering,China University of Petroleum(Beijing),Beijing 102249,China;3.Huabei Division,China Petroleum Logging Co.,Ltd.,Renqiu 062552,China)  
Took the standard of the type of coal rank as the prerequisite,which used by the CBM Rock Physics Laboratory of Langfang Branch,the existing identification method about the type of coal rank of China was analyzed,and the applicable condition of the experimental measurement method,statistics method(core calibration logging) and logging date crossplot approach was elaborated.In the actual application,the logging date crossplot approach was believed that it has taken the influence into consideration from mechanism which the changes of H/C,O/C,moisture content and aromaticity degree of macromolecule structure during coalification has on geophysical well logging.After combining the coalbed methane well date of six well fields on Erdos Basin,Junggar Basin,Songliao Basin and Qinshui Basin,the identification plate of the corresponding type of coal rank was established at good wellbore and thick coal seam.Based on actual data processing of two well area from the middle of Qinshui Basin and Enhong Basin,found the coal rank identify types of plate with laboratory analysis results accuracy in 95%,which verified the accuracy and feasibility of this approach in these area.
【Fund】: 中国石油天然气集团公司“十一五”科技攻关资助项目(2008A-2701)
【CateGory Index】: P631.8
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