塔西南坳陷西南缘构造类型与圈闭特征

Structural Types and Trap Features of Southwest Border of Southwest Depression in Talimu Basin

依据构造圈闭与油气成藏理论 ,试图探明研究区油气聚集带的特征 .利用钻探、地震研究成果 ,对坳陷西南缘的构造类型、圈闭特征、圈闭与油藏关系的研究 ,提出了西南缘主要发育为构造圈闭 ,构造类型有两大类 6亚类 ,海西期和喜山期是构造圈闭和油藏的主要形成时期 .论述了各二级构造单元的圈闭分布与成藏关系 ,提供了有利的圈闭类型和油气勘探区带 .

The structural types and trap features in the area were studied according to geological and seismic data. It is held that the traps developed in the studied area are mainly structural traps, the structure can be classified into two types and six sub-types, the structural traps and petroleum accumulation were formed mainly in Hercynian and Himalayan periods. The relationships between trap distribution and petroleum accumulation in every second-order structural units were also studied, and the favorable trap types and oil and gas exploration area were suggested.