横向断鼻成因及其油气勘探模式

Origin of Transverse Nose-Shaped High and It’s Oil & Gas Exploration Model

陈昭年¹,周建生²

Chen Zhaonian, Zhou Jiansheng

1. 中国地质大学能源系,北京,2. 中国石油大港油田分公司

China University of Geoscience , Beijing 100083 , P. R. China

伸展盆地生长断层上盘的断鼻型圈闭与逆牵引背斜型圈闭一样是油气勘探的主要目标。横向断鼻是由于伸展断层在走向上位移的变换,在分段断层断距最小处形成的断鼻构造。横向断鼻遵循“岩性找油,围斜部署”的油气勘探模式。

The reverse drag anticline traps and the nose-shaped high trap in the hanging wall of growth fault in extensional basin are the major targets in oil and gas exploration. The transverse nose-shaped highs form as a result of along-strike transfer in fault displacement , and developed at local displacement minimum of the segmented fault system. The exploration model of the transverse nose-shaped high must conform to explore lithostratigraphic reservoir in it’s declinational position.