【摘要】 受多物源、沉积旋回影响,建立精准、合理的油田级精细等时地层格架难度较大。针对小层等时地层对比难以在平面上连续追踪的缺点,提出了井震结合成因层序地层对比方法。以大庆长垣北部萨尔图油层为例,综合运用岩心、测井和地震等资料,从层序地层发育成因模式分析入手,采用"地震同相轴引导标志层空间展布趋势,井分层精准刻画各层面空间位置"的方法,建立了萨尔图油层Ⅱ油层组(SⅡ)沉积单元级精准等时地层格架。研究发现,萨尔图油层Ⅱ油层组9小层(SⅡ9)为一套较为稳定的区域性隔层,尤其在喇萨杏油田(喇嘛甸油田、萨尔图油田、杏树岗油田),将1～9小层(SⅡ1～9)与10～16小层(SⅡ10～16)分隔成2套不同的储层结构体系。更多还原

【Abstract】 It is difficult to precisely and reasonably establish a fine isochronous stratigraphic framework for oilfields due to the influence of multiple sources and sedimentary cycles.In view of the shortcomings of tracing the small stratum continuously on the plane for isochronous stratigraphic correlation,the method for genetic sequence stratigraphic correlation by combination is put forward.This paper takes Sa’ertu reservoir in the north of Daqing Placanticline Oilfield as an example,and establishes fine isochronous stratigraphic framework of sedimentary unit for SⅡreservoir group based on the comprehensive application of core,logging and seismic data by analyzing the genesis of sequence stratiographic development,the method of"seismic phase axes guiding the spatial distribution trend and well stratification for accurately depicting the spatial position of each layer".The result shows SⅡ9 is a relatively stabilized regional interlayer,especially in Lamadian and Sa’ertu Oilfields,SⅡ1～9 and SⅡ10～16 are divided into 2 different reservoir structures.更多还原