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埕北断坡区位于黄骅坳陷中区歧口凹陷南缘,是以沙二段为主要目的层的多阶断裂斜坡,古近系主要受南部埕宁隆起盆外物源和孔店～羊三木盆内物源影响,发育辫状河三角洲、扇三角洲、浊积砂体和滨浅湖滩坝等多期多类型砂体,储层孔隙度为11.04%～21.67%、渗透率0.34mD～17.1mD。砂岩输导层、断层及不整合面相互交叉、叠置、连通形成复式立体输导体系,为油气成藏提供良好的运移通道。通过研究该区成藏条件,明确成藏规律,对下步勘探方向具有重要意义。
The Tiebei Slope Area is located in the southern margin of the Qikou Depression in the Central Huanghua Depression. It is a multi-grade fault slope mainly composed of the Es2 Member. The Paleogene is mainly dominated by the source of extra-basin water and the Shuangdian ~ The origin of the three-tub basin is characterized by multi-stage and multi-type sand bodies such as braided river delta, fan delta, turbidite sand body and bank-shallow lake dam. The porosity of the reservoir is 11.04% -21.67% and the permeability is 0.34mD ~ 17.1mD. The sandstone conducting layers, faults and unconformities intersect, overlap and connect to form a compound three-dimensional guide system, which provides a good migration channel for hydrocarbon accumulation. By studying the reservoir forming conditions in this area and clarifying the law of hydrocarbon accumulation, it is of great significance to the next exploration direction.