应用“聚油单元”研究济阳坳陷的石油资源潜力

在济阳坳陷下第三系石油资源评价中,根据"含油气系统——从烃源岩到圈闭"的基本研究思路,加强主运移通道控烃的研究,提出了"聚油单元"的概念,强调"聚油单元"是盆地数值模拟和资源潜力分析的基本单元.根据研究,将济阳坳陷划分为28个聚油单元,并在盆地数值模拟和排、聚系数研究的基础上,计算了各聚油单元的资源量.从石油资源量、远景石油资源量和远景石油资源丰度等方面分析了各聚油单元的资源潜力后认为,济阳坳陷在新领域、新层系和新类型的石油勘探潜力仍然很大. 

STUDY OF PETROLEUM RESOURCE POTENTIAL APPLING OIL-ACCUMULATING UNITS IN THE JIYANG DEPRESSION

The petroleum system philosophy has great utility for evaluating oil-gas resource potential, understanding the distribution law of hydrocarbon and guiding oil-gas exploration in basins. The petroleum system subdivision is based on the critical process analysis of hydrocarbon from source rocks to traps. In this process, the largest outside boundary of oil-gas migration in a 3-D geological unit can be traced. The research on oil-gas secondary migration plays the leading role in the subdivision. The Jiyang Depression was divided into 28 oil-accumulating units on the basis of the petroleum system philosophy from source rocks to traps in the Eogene petroleum resource evaluation of the Jiyang Depression. Petroleum resources of every oil-accumulating unit were calculated on the bases of basin simulation and the study of hydrocarbon expulsion coefficient and accumulation coefficient. The resource potential was analyzed in the light of the petroleum resource volume and the prospect petroleum resource volume. The abundant degree of prospect petroleum resources and the future petroleum explorative potential in the Jiyang Depression is still great.