Application of logging evaluation methods for coalbed methane resources at deep depth
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摘要: 煤层气地球物理测井评价是获取煤层气参数的重要方法。根据实际资料总结了胜利油田山东探区深部煤层的测井响应特征,实现了对煤层的自动识别划分。结合前人的工作,给出了煤层组分、孔隙度和渗透率等参数的定量计算方法,并改进了煤阶划分和含气量估算方法。实际资料处理结果表明,该套方法的煤层识别吻合率和参数定量计算可信度均较高,为评价煤层气资源提供了可靠参数。Abstract: It is the important approach that the coalbed methane is evaluated by using geophysical logging data.The paper generalizes the characteristics of logging responses of deep coal beds,and realizes the automatic identi-fication of coal beds,then presents the quantitative computing methods of parameters as coal components,porosity,permeability and gas content,etc.The practical application shows that the methods have good identification results and reliable computation,which provides dependable parameters for evaluation of coalbed methane resources.
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Keywords:
- logging evaluation /
- automatic identification /
- gas content /
- coalbed methane
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