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黄骅坳陷孔南地区沙河街期发育了沧东凹陷、南皮凹陷、盐山凹陷和吴桥凹陷,虽然这4个凹陷相互连通,但特点各异,具有双断中隆型、东断西超型和西断东超型3种结构,分别沉积了扇三角洲相、辫状三角洲相和湖相等沉积体,发育了砂岩、生物灰岩和白云岩3种岩石类型。烃源岩评价表明,吴桥凹陷有机质丰度及生烃潜力较低,其余3个凹陷均有一定资源规模。通过对这4个凹陷成藏条件类比,优选出盐山凹陷、沧东凹陷作为勘探突破的主攻方向,提出了针对凹槽、斜坡区以岩性油藏为主的勘探部署思路。
The Cangdong Sag, Nanpi Sag, Yanshan Sag and Wuqiao Sag developed during the period of Shahe in Kongon area of Huanghua Depression. Although these four pits are connected to each other, they have different characteristics, Type and west-east type. Three types of sedimentary bodies, such as fan-delta facies, braided delta facies and lacustrine sediments, were developed, and three types of rock, sandstone, bio-limestone and dolomite were developed. The evaluation of source rocks shows that the organic matter abundance and hydrocarbon generation potential of Wuqiao sag are low, and the remaining three sags have some resources. Based on the analogy of these four depression accumulation conditions, Yanshan depression and Cangdong depression are the main directions of exploration breakthrough, and some ideas of exploration and deployment for reservoirs in the groove and slope area are put forward.