莺歌海盆地泥底辟发育演化与油气运聚机制

The Formation and Evolution of Mud Diapir and Its Relationship with Hydrocarbon Accumulation Mechanism in Ying Ge Hai Basin

第三系泥底辟是莺歌海盆地非常独特的地质体，其发育演化与烃类及流体的生、排、运、聚以及塑性泥的流动，均存在直接的成因联系。泥底辟是一个独立、完整的油气生、运、聚体系，或即油气运聚的封闭箱或封存箱，其烃类及流体运聚和塑性泥质物的流动均与该封闭体系（封闭箱）顶封闭层的形成与破坏密切相关，亦即顶封层的破裂刺穿与保存完整与否，直接控制了烃类及流体的运聚机制及模式和塑性泥的流动方式与形态特征。籍此，总结出两种不同的油气运聚机制及模式。

The Tertiary mud diapir of Ying Ge Hai Basin is an extraordinary geological body. Its formation influenced other fluid generation, migration and accmulation as well as plastic mud flow.Mud diapir is an independent and integrated system or compartment for hydrocarbon generation,migration and accumulation, in which the hydrocarbon and fluid migration and accumulation as well as the plastic mud flow all have close relation with the formation and destruction of the top compartment seal, i. e.,The broken or unbroken top comportment seals can control and determine the migration and accumulation mechanism and models of hydrocarbon fluid and plastic mud. The paper has concluded that two different kinds of hydrocarbon migration and accumulation mechanisms or models can be used as guidlines for the mud diapir deposit exploration.