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根据岩心及测井资料,对黄骅坳陷大中旺地区沙一下亚段碳酸盐岩与碎屑岩混积地层进行了高分辨率层序地层学研究。首先识别出层序界面,并详细分析了地层叠加样式,在此基础上将其划分为1个中期基准面旋回、4个短期基准面旋回,建立了碳酸盐岩与碎屑岩混积地层的高分辨率等时地层对比格架。在地层格架内,探讨了储层发育规律,并分析了基准面升降变化与储层发育的关系,最终指出了储层发育的有利部位。
According to core and well logging data, high-resolution sequence stratigraphy of carbonate and clastic rock strata in sub-sand sub-stage of Dazhongwang area in Huanghua depression was studied. Firstly, the sequence boundary is identified, and the stratigraphic superposition pattern is analyzed in detail. On the basis of this, it is divided into a mid-term base-level cycle and four short-term base level cycles, and a carbonate- High-resolution isochronous stratigraphic contrast grid. In the stratigraphic framework, the law of reservoir development is discussed, and the relationship between the change of base level and reservoir development is analyzed. Finally, the favorable site of reservoir development is pointed out.