【摘要】 综合利用地震、测井、岩心、录井、古生物等资料,将车镇凹陷沙三—沙一段划分为2个二级层序和4个三级层序,并进一步划分出体系域。各体系域时期分别发育近岸水下扇、扇三角洲、三角洲、湖底扇和湖泊相等相类型。近岸水下扇多发育于北部陡坡带湖侵域、高位域和湖退域时期;扇三角洲在层序Ⅲ,Ⅳ时期分布较广;三角洲主要形成于湖侵域晚期及高位域等湖盆演化的中后期;湖底扇夹于半深湖—深湖相泥岩中,各时期均有发育;滨浅湖滩坝多分布于湖泊边缘、湖湾及隆起周围缓坡侧的滨浅湖地区。对该时期凹陷内有利砂体进行了预测,提出了4种类型的10个有利区带,为在该区寻找隐蔽油气藏提供依据。更多还原

【Abstract】 With comprehensive study of outcrop, drilling, ancient life, well logging and seismic data, the Paleogene Es~3- Es~1 strata of study area are divided into 2 secondary and 4 third class sequences, and dividing system tract further. For each system tract period, inshore submerged fan, fan delta, delta, sublacustrine fan and lake facies are generated respectively. Favorable sandstone body is predicted. 10 favorable districts which can be classified into 4 types are put forward. All these provide technical supports for subtle reservoir exploration.更多还原