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苏北盆地存在大量断层和复杂局部构造。断层作为圈闭的有机组成部分是油气运聚成藏的关键因素之一,主要形成断鼻、断块圈闭油藏。按圈闭中油水分布特点,该区可归结为2大类6种油藏类型;研究了层状砂岩油藏的4种油水分布样式及其成因机制。结果表明,层状砂岩油藏4种不同样式的油水分布,主要是由圈闭生储盖组合性质、断层侧向遮挡质量和封通双重作用、油气运移路径、充注方式和断层调节油气等因素决定的。明确上述认识,有助于加深该区对油气富集规律的认识以及勘探挖潜和开发部署工作的进一步展开。
Subei Basin there are a large number of faults and complex local structure. The fault, as an organic component of traps, is one of the key factors for hydrocarbon migration and accumulation. The fault mainly consists of fault nose and fault block traps. According to the distribution characteristics of oil and water in the traps, this area can be attributed to 6 types of reservoirs in 2 major types and 4 types of oil and water in layered sandstone reservoirs and their genetic mechanism. The results show that the distribution of oil and water in four different styles of layered sandstone reservoirs is mainly caused by the combination of the characteristics of the trapped reservoirs and reservoirs, the quality of lateral fault occlusion and the sealing effect, the migration path of oil and gas, filling method and fault regulation oil and gas And other factors. A clear understanding of the above will help to deepen the understanding of the law of oil and gas enrichment in the area as well as to further explore the potential of exploration and development and deployment.