【摘要】 以中石油廊坊分院煤层气岩石物理实验室的煤阶类型分类标准为前提,分析了我国现有煤阶类型的识别方法,并阐述了实验测量法、统计法(岩芯刻度测井)和测井资料交会图法的适用条件。从实际应用上认为,测井资料交会图法从机理上考虑了煤化作用演化过程中H/C、O/C含量、水分和煤大分子结构芳香性程度的变化对地球物理测井的影响,综合我国鄂尔多斯盆地、准噶尔盆地、松辽盆地和沁水盆地4个盆地6个井区的煤层气井的测井资料,在井眼条件较好,煤层较厚的情况下建立了相应的煤阶类型识别图版。通过对沁水盆地中部和恩洪盆地两个井区的实际资料处理发现,这套煤阶类型的识别图版与实验室分析的结果符合率在95%以上,证实了该套方法建立的煤阶类型识别图版应用在这些地区的准确性和可行性。更多还原

【Abstract】 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.更多还原