南海南部主要盆地油气分布规律及主控因素
发布时间：2019-03-11 14:17
【摘要】：以前人研究成果为基础,结合构造演化、沉积充填特征及地球化学指标分析,对南海南部3个主要盆地进行了油气分布规律及主控因素研究。结果表明,万安盆地和曾母盆地发育渐新统—下中新统煤系和陆源海相2类主力烃源岩,干酪根类型为Ⅱ—Ⅲ型;文莱—沙巴盆地发育中中新统—上新统煤系烃源岩,干酪根类型为Ⅱ2—Ⅲ型。万安盆地油气富集于中新统储层,平面上具有"西油东气"的分布特征;曾母盆地油气富集于渐新统—中新统储层,具有"下油上气"分布特征,平面上具有"南油北气"的分布格局;文莱沙巴盆地油气富集于中中新统—上新统砂岩储层,近岸浅水区是油气主要富集区。3个盆地受古南海消亡和新南海扩张的控制,主力烃源岩发育时期沉积环境各异,后期盆地内成熟度的差异性控制油气分布的区带性,构造运动在各盆地的响应机制导致油气成藏具有明显规律性。
[Abstract]:On the basis of previous research results, combined with structural evolution, sedimentary filling characteristics and geochemical index analysis, the oil and gas distribution and main controlling factors of three main basins in the southern South China Sea have been studied. The results show that two main source rocks of Oligocene-Lower Miocene coal measures and continental source-marine facies are developed in Wan'an Basin and Zengmu Basin. The kerogen type is of type 鈪，
本文编号：2438352
[Abstract]:On the basis of previous research results, combined with structural evolution, sedimentary filling characteristics and geochemical index analysis, the oil and gas distribution and main controlling factors of three main basins in the southern South China Sea have been studied. The results show that two main source rocks of Oligocene-Lower Miocene coal measures and continental source-marine facies are developed in Wan'an Basin and Zengmu Basin. The kerogen type is of type 鈪，
本文编号：2438352
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