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莺歌海盆地的泥 -流体底辟构造发育演化是区域构造应力场变化和超压体系形成演化的结果。与盆地构造类型密切相关的不均衡压实和热作用引起盆地超压体系的发育 ,而区域构造应力场变化则导致盆地中中新世以泥底辟作用为主 ,晚中新世—第四纪以流体底辟作用为主 ,其中 ,早期泥底辟阶段形成的构造形态对晚期流体底辟作用有显著的控制作用。在莺歌海组浅层底辟圈闭中 ,圈闭形成期与中新统气源岩生烃过程的匹配是造成含不同天然气组分的流体发生幕式充注的主要原因
The development of mud-fluid diapirs in Yinggehai Basin is the result of the change of regional tectonic stress field and the formation and evolution of overpressure system. The imbalanced compaction and thermal effects, which are closely related to the tectonic types of the basin, caused the development of overpressure system in the basin. The change of regional tectonic stress field resulted in the emplacement of the mud emplacement in the basin in the middle Miocene - the fourth The diagenesis is dominated by fluid diapirs, in which the tectonic forms formed in the early diapir stage have significant control over late diapirism. In the Yinggehai Formation, the matching of the trap formation period and the Miocene gas source rock formation process is the main reason for the curtain-type filling of fluids containing different natural gas components