论文部分内容阅读
莺歌海盆地底辟带热流体输导系统以垂向断裂和裂隙系统为主 .根据断裂和裂隙系统形成机制及其赋存特征 ,划分为三种类型 ,即弥散型层内流体压裂、穿刺型断裂、拱张型断裂 .这些断裂和裂隙系统的发育不仅影响到盆地温度场和压力场的变化 ,而且还影响到超压体系中烃类气体的运移 ,它构成烃类气体垂向输导的主要通道 .超压流体囊幕式突破使得这些断裂和裂隙系统呈幕式开启和封闭 ,从而构成了莺歌海盆地多源混合、多期运聚的天然气成藏模式 .
In the Yinggehai Basin, the diapir zone thermal fluid transport system is dominated by vertical faults and fracture systems.According to the formation mechanism of fault and fracture system and their occurrence characteristics, they are divided into three types, namely, fluid fracturing in diffuse layer, puncture Fracture and arcuate fracture.The development of these faults and fracture systems not only affects the change of temperature field and pressure field in the basin but also affects the migration of hydrocarbon gases in the overpressure system and it constitutes the vertical transport of hydrocarbon gases The main channel of overpressure flow is that the breakthrough of the overpressure fluid makes the faults and clefts open and close, thus forming the natural gas accumulation mode of multi-source mixing and multi-phase transport in Yinggehai Basin.