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渤海湾盆地沙垒田凸起与围区凹陷形成了典型的陆相断陷湖盆源-汇系统.基于钻井、地震、岩心及储层分析资料,刻画了沙垒田凸起及围区源-汇系统要素特征,并将源-汇系统分为断裂陡坡型、断裂缓坡型、斜坡型及断槽型4大类.不同类型源-汇系统的物源供给控制相应的沉积体系发育,从而影响其储层的成岩作用与物性特征.研究表明,沙垒田凸起围区凹陷的储层发育受源-汇系统要素耦合与成岩作用的共同控制,其中断裂缓坡带由于源区高差与汇水面积大,沿断裂坡折带分布的沉积体系与砂体规模大、范围广,砂岩成分、结构成熟度较高,埋深浅、机械压实作用较弱,次生孔隙发育,为优质储层发育的有利区,而断裂陡坡型、斜坡型及断槽源-汇系统次之.
A typical terrigenous faulted lake source-sink system formed in the Shaleitian bulge and the peripheral depression of the Bohai Bay Basin.Based on the data of drilling, seismic, core and reservoir analysis, - sink system features, and the source - sink system is divided into steep slope fault, gentle slope fault, ramp type and fault type.Different types of source - sink system, the source of supply control the corresponding sedimentary system development, thus Which affect the diagenesis and physical property of its reservoir.The study shows that the reservoir development of Shaleitian uplift depression is controlled by the coupling of source and sink system elements and diagenesis, Sedimentary systems and sand bodies with large catchment area and distributed along the fault slope are large scale, wide range of sandstone composition, high structure maturity, shallow depth, weak mechanical compaction and secondary porosity, Layer development of the favorable area, and the fracture steep slope, slope-type and broken source - sink system second.