复杂地质条件下气层的多参数识别

GAS-BEARING ZONES IDENTIFICATION IN COMPLEX GEOLOGIC CONDITION BY MULTIPARAMETER

在复杂地质条件下，应用单一或两种孔隙度测井资料直接识别气层，灵敏度不高．为了准确地识别复杂地质条件下的气层，需从不同角度，应用多参数进行综合识别．本文介绍了声波法、中子－密度法、双孔隙度法、中子－伽玛法、等效弹性模量法等，并应用它们对吐哈盆地两口井进行了重点分析，效果良好．

By using single or two porosity log data to identify directly gas bearing zones in complex geologic condition,the sensitivity is not high. Then,it might apply multiparameter from various respects to identify gas bearing zones. In this paper,Acoustic method、 Neutron-Density method、Neutron-Gamma method、Double-porosity method and Equivalent difference ratio of elastic modulus of formation rock were introduced,and they were applied to identify gas bearing zones in two wells in Tuha basin,the results are very well.