In these bicyclic sesquiterpanes, the relative abundance of the rearranged drimane is regularly changed in spatial distribution, which may indicate the characteristics of petroleum migration and accumulation in QHD32-6 oilfield.

• 该油田双环倍半萜中重排补身烷的相对丰度在纵向上和横向上都表现出有规律的变化，这种规律性的变化可能反映了秦皇岛32-6油田油气运移与聚集的特徵。