松辽盆地莺山断陷火山岩地震反射特征及分布规律

莺山断陷侏罗系火山岩中发现商业气流,使深层火山岩成为松辽盆地又一个油气勘探目的层。在钻井少的情况下寻找火山岩储气层,利用地震信息预测火山岩分布就成了唯一有效的途径。利用地震资料结合钻井地质可对火山岩的分布进行研究。通过火山岩在地震上的反射特征,可预测火山岩的分布范围和厚度;通过钻井地质揭示的地层,可研究火山岩的分布规律。由此,可搞清火山岩的形成及分布。这对松辽盆地莺山断陷侏罗系火山岩储气层的研究具有十分重要的意义。 

SEISMIC REFLECTION FEATURES AND DISTRIBUTION LAW OF VOLCANIC ROCKS IN THE YINGSHAN FAULT DEPRESSION OF THE SONGLIAO BASIN

WT5BZ]Commercial gas stream bas been discovered in the Jurassic volcanic rocks of the Yingshan Fault Depression.Deep volcanic rocks then become another target stratum for hydrocarbon exploration in the Songliao Basin.To predict the distribution of volcanic rocks by seismic information is an only effective way to find out gas reservoirs in volcanic rocks when with few drilling wells.By use of seismic data and combined with the geology of drilling wells,the distribution of volcanic rocks can be studied.The distributive range and thickness of volcanic rocks can be predicted by their seismic reflection features,and the distributive law can be analysed by strata whose geology is revealed through well drilling.Therefore the formation and distribution of volcanic rocks can be understood.This has very important significance for the gas reservoir research of the Jurassic volcanic rocks in the Yingshan Fault Depression of the Songliao Basin.