论成藏动力学与成藏动力系统

A discussion on dynamics and dynamic system for hydrocarbon migration and accumulation

油气成藏动力学包括油气成藏的各种动力、盆地地球动力学背景以及油气从源岩到圈闭形成油气藏所经过的"路"——成藏动力系统。成藏动力系统既是成藏动力学的载体,也是成藏动力学研究的主要内容。成藏动力系统的构成要素包括排液(烃)单元、排液(烃)组合、成藏动力子系统、连通体系等。成藏动力系统研究的主要进展是:1)层序地层学研究在成藏动力系统识别和划分中的应用,认识到最大洪泛面是识别和划分成藏动力系统的关键界面;2)异常压力封存箱发育区的成藏动力系统;3)构造动力在油气生、排、运、聚、再运移、再聚集、直至油气藏破坏的成藏作用过程中的研究。

Hydrocarbon migration and accumulation dynamics studies various driving forces of hydrocarbon migration and accumulation, geodynamic background of basins, and dynamic systems for hydrocarbon migration from source rocks to traps and entrapment. The dynamic system not only serves as a carrier for hydrocarbon migration and accumulation dynamics, but also occupies a very important place in the dynamics studies. It consists mainly of hydrocarbon expulsion units and their combinations, subsystem of hydrocarbon migration and accumulation dynamics, pathway systems. The progresses in the study of dynamic systems include （ 1 ） the application of sequence stratigraphy to the determination and classification of the dynamic systems, resulting in a better understanding of the fact that the maximum flooding surface is critical for recognizing and classifying the dynamic systems; （2） achievements on the study of the dynamic system in the areas with abnormal pressure compartments; （3） researches on the role the tectonic dynamics in the process of hydrocarbon generation, expulsion, migration, accumulation, re-migration, and re-accumulation, and the destruction of the reservoirs.