These faults were expending structural types, including 3 types, such as fault step related with boundary shovel-like normal fault, tilt fault block and graben-host block combination of slope.

• 这些断裂以伸展构造样式为主，具体主要有以下3种，分别是与边界铲式正断层相关的断阶，掀斜断块和斜坡上的堑-垒组合。这些断裂对工区内的油气运聚有较大影响。