摘要
煤层气储层为双孔隙结构,常规天然气测井评价方法不适合于评价煤层气储层,本文在大量煤田测井文献基础上,选用有效参数,利用三孔隙度差异法、空间模量差比法等识别煤层气储层,基于Matlab设计软件,绘制三角交汇图和M-N分析图,通过煤层体积模型计算碳、灰、水含量,计算煤阶、孔隙度、渗透率和含气量来评价煤及煤层气储层性质。
Coal-bed gas reservoir is a double porosity structure.Routine evaluation methods of gas logging are not suitable for the evaluation of coal-bed methane reservoir.Based on a number of literatures on well logging,effective parameters are selected,and three porosity difference method and space modulus difference ratio method are used to identify coal-bed gas reservoir.Based on the Matlab,triangle intersection graph and M-Nanalysis diagram are drawn.Coal volume model is used to calculate carbon,ash,water content,coal rank,porosity,permeability and gas content to evaluate reservoir properties of coal and coal-bed methane.
出处
《工程地球物理学报》
2015年第1期83-88,共6页
Chinese Journal of Engineering Geophysics
关键词
测井响应
煤层气储层
软件设计
logging response
coal-bed gas reservoir
software design
