论文部分内容阅读
根据相对海平面升降速率与礁生长速率之间的关系 ,生物礁可分为三种类型 :进积礁 ,并进礁 ,退积礁。据此 ,中国南方二叠纪生物礁油气系统可划分为三种成因类型 :进积型 ,并进型 ,退积型。南盘江地区茅口期、鄂西地区长兴期进积礁属进积型 ;南盘江地区长兴期并进礁属并进型 ;川东地区长兴期退积礁属退积型。含油气系统要素形成机理及空间配置关系受相对海平面升降控制 ,不同类型的礁体具有不同的含油气系统要素形成机理及空间配置关系。这一认识对钻前评估潜伏礁体的含油气潜力具有重要的意义。
According to the relationship between relative sea-level rise and fall rates and reef growth rate, reefs can be divided into three types: progressive reefs, and reefs, retreat reefs. Accordingly, the Permian Reef oil and gas systems in the southern China can be divided into three types of genesis: progressive type, progressive type and degenerated type. The Maokou phase in Nanpanjiang region and the Changji epoch-fauna in the western part of western Hubei Province merge into the reefs and enter the Changxing Period in Nanpanjiang area. The formation mechanism and spatial distribution of oil-gas system elements are controlled by relative sea-level rise and fall. Different types of reefs have different formation mechanism and spatial distribution of petroleum-system elements. This understanding is of great significance for assessing the hydrocarbon potential of the latent reef before drilling.