松辽盆地莺山断陷安山岩储气层岩石物理特征研究

Petrophysical Study on Andesite Gas Reservoir in Yingshan Downcast of Songliao Basin

刘为付¹,刘双龙²,孙立新²

Liu Weifu , Liu Shuanglong, Sun Lixin

1.大庆石油学院,2.大庆石油管理局试油试采公司

Daqing Petroleum Institute , Heilongjiang 151400 , P. R. China

莺山断陷在深层侏罗系安山岩中发现气层,从而使深层火山岩成为松辽盆地又一个勘探目的层。根据特殊储气层特点,系统研究本区安山岩岩石物理特征:利用测井资料有效识别3 类安山岩储气层;利用测井资料,结合常规岩样和全直径岩样物性分析资料,建立泥质含量及孔隙度解释模型;在密闭取心和油基钻井取心资料缺乏的情况下,利用测井参数有效求取含气饱和度;利用井周声波成象测井资料判断裂缝,结合其它测井资料,求取裂缝孔隙度。

The petrophysics study on deep andesite rocks is very important in Yingshan downcast of Songliao Basin , because gas reservoirs have been discovered in the area of deep andesite. Base on the gas reservoir characteristics, this paper introduces the thinking and methodology for making successful petrophysical study - identifying andesite and its three types with logging data. The clay content and porosity interpretation model is founded by incorporation logging and convertional and fulldiameter physical property analysis ; Gas saturation is determined in the case of lake of sealing coring and oil base drilling mud coring data by logging data ;Fractures are determined by wellbore sonic imaging and then getting fracture porosity. The study can play an important role in researching the deep igneous gas reservoir in Songliao Basin.