莺歌海盆地底辟本质及其与天然气成藏关系

摘要

Diapir is a specific abnormal geologic body in Yinggehai Basin of northern margin of South China Sea. According to the study, it is considered that diaper is a combination of deep mud diaper and shallow fluid diaper, and it has been in a dynamic equilibrium state and it will keep this state for a long time. Different types of diapir has different exploration potential, and the high and middle energy diapir has better exploration potential. For the same type of its non-collapse part has better exploration potential.%底辟是南海北部边缘西区莺歌海盆地特有的异常地质体。研究认为：底辟构造是深部泥底辟与浅部流体底辟的结合体,其一直并长期处于动态平衡状态;不同底辟类型间天然气勘探潜力不同,高、中能量底辟区勘探潜力较大;同一类型底辟构造,底辟非塌陷区勘探潜力更大。