【摘要】 勘探开发初期有限的油气资源评价资料限制了暗色泥岩预测方法的可靠性,松辽盆地北部登娄库组烃源岩主要为登二段灰色泥岩,其分布情况是评价松辽盆地北部深层致密砂岩气藏资源量的重要基础。本文以井震信息和基于沉积特征的多元地震属性定量方法,预测研究区泥岩厚度平面分布;综合地层沉积厚度平面信息、地震相平面信息及井点暗色泥岩和泥岩厚度比值信息,预测全区暗色泥岩和泥岩厚度比值的平面分布;预测结果显示松辽盆地北部登二段烃源岩主要有3个较大的发育,同时伴有其它零星小范围暗色泥岩发育,大部分厚度分布在70 m以下,最大暗色泥岩预测厚度约为350 m。该方法以井震信息为基础结合沉积规律定量预测暗色泥岩分布,为松辽盆地北部深层致密砂岩气藏资源量的可靠评价提供了必要的基础。更多还原

【Abstract】 Limited oil and gas resource evaluation data in the early exploration stage limits the reliability of dark mudstone forecast method.The main hydrocarbon source rocks of Denglouku formation in northern part of Songliao Basin is K₁d² gray mudstone,its distribution is an important foundation of resources evaluation of deep tight sandstone gas reservoirs in the northern Songliao Basin.This study combined well to seismic information using quantitative multicomponent seismic attributes forecast method based on the deposition characteristics to predict mudstone thickness plane distribution in the study area;then consolidated strata deposited thickness plane information,plane information of seismic facies interpretation and well point dark mudstone and shale thickness ratio predict the region plane distribution of dark mudstone and shale thickness ratio;Finally,using seismic prediction of mudstone thickness and the region plane distribution of dark mudstone and shale thickness ratio,we get the plane prediction result of dark mudstone.Prediction results show that there are three large development period of hydrocarbon source rocks of K₁d² black mudstone in Songliao Basin accompanied by other scattered small range of dark mudstone development period,and most of the thickness of those mudstone are less than 70 m,while the biggest thickness is about 350 m.This method,which based on the well to seismic information and combines the deposit rule to quantitative prediction the distribution of dark mudstone,provides necessary foundation for the reliable evaluation of the resource extent of deep tight sand gas reservoir in northern Songliao Basin.更多还原