波斯湾盆地油气分布主控因素初探

以获取的最新油气田储量数据为基础，采用石油地质综合分析方法，探讨了波斯湾盆地油气分布特征和主控因素。研究表明，区域上油气主要分布于现今的波斯湾及其周缘地区，层系上不同地区油气富集的储集层系不同。在扎格罗斯次盆地，古近系和新近系的油气最为富集;而在阿拉伯次盆地，侏罗系和白垩系是石油最富集的层系，二叠系是天然气最富集的层系。油气的分布主要受3个因素的控制，即次级盆地的构造-沉积演化史、优质区域盖层和主力烃源岩展布，前2个因素控制油气的层系分布，第3个因素则控制着油气的区域分布。

A preliminary study of main control factors on oil and gas distribution in Persian Gulf Basin

With the latest data for reserves of individual oil and gas fields,the regional distribution and stratigraphic distribution of oil and gas discovered in the Persian Gulf Basin and the main control factors on their distributions were discussed by applying an integrated analysis of petroleum geology.Regionally,the oil and gas fields are concentrated in the Persian Gulf and its adjacent areas.Stratigraphically,the main oil and gas reservoir intervals vary in different tectonic units.The Paleogene and Neogene constitute the principal reservoir intervals in the Zagros Basin.In the Arabian Basin,oil is largely resevoired in the Jurassic and Cretaceous and gas in the Permian.Oil and gas distribution is mainly controlled by three factors: tectono-depositional history of a particular basin,high-quality regional seal and main source rocks.The first two factors control the stratigraphic distribution of oil and gas,whereas the third factor controls the regional distribution.