论成藏动力学系统

DYNAMIC POOL-FORMATION SYSTEM

在我国东部陆相盆地找油过程中,需要在含油气系统中以油气的运移和聚集的动力学系统和过程为核心,进一步划分出成藏动力学系统。文中作者论证了划分的必要性和可能性,划分原则及其动力学源泉;介绍了开放型、封闭型和半封闭型三种类型的成藏动力学系统.论述了成藏动力学系统中油气藏形成特征和分布规律。文章以渤海湾复式油气区多成藏动力学系统叠置的盆地为例,通过划分其不同的成藏动力学系统,具体分析各个系统油气形成、运移、分布的动力学过程,明确其油源对比特征,从而可以明确寻找不同动力学系统油气藏的目标和方向。该文还概略地提出了成藏动力学系统的研究方法,即综合运用地质、地震、测井资料以及各种测试方法获得的油源对比资料与盆地动态模拟相结合的方法,是研究复式油气区多成藏动力学系统的有效方法。

In continental basins in eastern China, it is necessary to distinguish dynamic pool-formation systems from petroleum system, according to the dynamic system and process of hydrocarbon migration and accumulation. The paper demonstrates the necessity and possibility of its division, puts forward the concept and dynamic source of dynamic pool-formation system. Three types of the systems, named open-type, closed-type and semiclosed-type are distinguished. The characteristics of oil-gas pool and spatial occurrence in these systems are discussed. In multiple superimposed petroliferous basins, the target and direction for exploration can be determined by dividing different dynamic systems, analyzing the process of hydrocarbon generation, migration and distribution, determining the correlation of oil-source rocks. The methodology for dynamic system analysis is discussed briefly, i. e., comprehensively using the geological, seismic, well-logging and testing data, combined with basin simulation, is the effective way to study dynamic poolformation systems.