次生油气藏成藏研究进展

Advances in the Research of Secondary Petroleum Reservoirs Forming

对次生油气藏的含义、研究历程进行较全面的总结,并且对次生油气藏的成藏要素和研究技术方法进行了较系统的分析,认为断层是控制次生油气藏垂向分布的最主要的影响因素,总结了几种典型的断层成因的次生油气成藏模式;并且根据超压对油气运聚的影响提出超压封存箱内成藏模式和垂向叠置超压封存箱箱间次生成藏两种次生油气成藏模式。将次生油气藏的研究与流体包裹体技术联系起来,总结了利用流体历史分析技术(FHA)和油气成藏年代学研究次生油气藏的形成和演化。

The meaning and research stage of secondary petroleum reservoirs are reviewed comprehensively, and entrapping elements, research technique and methods are analyzed systematically. Fault is considered the most significant factor which impacts the vertical distribution of secondary petroleum pool. Several typical secondary petroleum pool entrapping modes which are controlled by fault are introduced. Besides, with regard to the effect that overpressure leads to the migration and accumulation of oil and gas, two entrapping modes are provided. One is entrapping in the overpressured fluid compartment, and the other is entrapping among the vertical and neighbouring overpressured fluid compartment. The research of secondary petroleum reservoirs are combined with fluid inclusion. The application of fluid history analysis （FHA） technology and geochronology of hydrocarbon accumulation to study secondary petroleum reservoirs forming and evolution is summed up.