【摘要】 江汉平原的越舟湖地区具有"圈闭叠置、多源充注、储层发育、封存箱复合"等油气成藏特点。通过地震资料精细解释与圈闭描述,越舟湖构造中、古生界构造呈镜像关联;应用白垩系原油与二叠系、三叠系原油特征对比以及原油与烃源岩生物标志化合物、同位素系列特征对比,并结合油气纵向运移特征等方法分析认为,白垩系原油来自上覆下第三系、下伏上三叠统-下侏罗统、三叠统大冶组等多套烃源层;地质与地震相分析,提取了识别储层敏感属性,预测白垩系、石炭系储层优良;流体封存箱评价技术分析认为,中生界白垩系简单封存箱型油气成藏模式与上古生界叠置封存箱型油气成藏模式并存。因此,越舟湖地区具备中、上古生界油气立体勘探基本条件。更多还原

【Abstract】 It had the characteristics of reservoir-formation with superposition trap and multi-source filling and fine reservoir layers and complex compartment in Yuezhouhu Area.By Applying 3D seismic date fine interpretation and trap description in the area,it was considered that structure of Yuezhouhu in Mesozoic structure was the mirror relationship with Paleozoic structure.By contrast of the characters of crude oil in cretaceous and crude oil of marine facies in Permian and Triassic,and characters of conventionality biology labeled compound in crude oil and source rocks,together with unconventional carbon isotope series of crude oil and source rocks,and characters of hydrocarbon vertical moving,it was considered that oil source of cretaceous in the Area Mian31 comes from resource rocks in upper Triassic-lower-Jurassic partially comes from above resource rocks (lower-tertiary) and below the resource rocks (Daye formation lower-Triassic).It is oil reservoir with the characters of multi-source mixture.By analysis on geology and seismic facies,a forward calculation model of cretaceous and carboniferous system is established to extract the property of reservoir l sensitivity,predict the reservoirs in cretaceous and Carboniferous system.By using the fluid compartment assessment technique,it is considered that oil reservoir in cretaceous Mesozoic belongs to the pattern of reservoir-formation with simple compartment; gas reservoir in the upper Paleozoic possibly belongs to pattern of reservoir-formation with complex compartment.There exist patterns of reservoir-formation with simple compartment and complex compartment in Yuezhouhu Area. Hence,it is provided with basic condition on 3-dimensional exploration of oil and gas in Mesozoic and upper Paleozoic in Yuezhouhu Area.更多还原