煤层气储层储集空间的影响因素和测井预测方法

Influence Factors and Well-Logging Prediction Methods of Reservoir Spaces on Coalbed Methane

对孔隙发育的影响因素进行梳理,并比较了常见评价煤层气孔隙发育测井方法,以沁水盆地榆社-武乡区块的煤岩测试资料为基础,提出了基于储集空间发育的影响因素建立的评价煤层气储层孔隙发育的解释模型,研究认为灰分含量、变质程度、煤体结构是影响研究区储集空间的主要因素;基于影响因素的计算模型预测孔隙度优于常规解释模型预测。

Sorted out the influence factors of the pore development ,and compared the methods of common evaluation of porosity, proposed a calculation model with the well testing porosity of Yushe- Wuxiang block in Qinshui basin for evaluating the pore development. The results showed that the ash content, metamorphism degree and coal structure are main factors that influence the development of reservoir space, and the prediction of porosity based on the influence factors is better than that of conventional interpretation model.