关键词: 尼日尔三角洲, 滚动背斜, 塌陷构造, 次级断裂

Abstract: Niger Delta Basin is a Meso-Cenozoic sedimentary basin and it is located along the triple junction area of African plate and Atlantic plate. During geological history, the basin underwent an evolution of uplifting, faulting and fault-tilting. The basin is characterized by multiple oil pool types and many oil-bearing layers. The massive oil pools as roll-over anticline are dominated in the shallow horizons. Faulted block, faulted-nose, lithostratigraphic and turbine pools are dominated in the deep. Macro structures control the primary oil accumulation and distribution in the Basin. Secondary fault zones, turbine and sand bodies of different faces belts and foot wall block structures play an important role in hydrocarbon reaccumulation and redistribution, which are the new area with high potential.

Key words: Niger Delta, roll-over anticline, collapse structure, secondary fault