海洋地质前沿2017，Vol.33Issue(3)：27-32,6.DOI:10.16028/j.1009-2722.2017.03005
南非奥坦尼瓜盆地构造演化与油气差异分布
TECTONIC EVOLUTION AND ITS BEARING ON HYDROCARBON DIFFERENT DISTRIBUTION IN OUTENIQUE BASIN, SOUTH AFRICA
摘要
Abstract
The Outenique Basin,located in the very south of the Africa continent,is a typical passive continent margin basin.The Gondawana continent begun to break-up in late Jurassic.The Outenique Basin was then developed with the drifting of the three plates,Africa,South America and Antarctica.The basin has undergone three tectonic evolution stages,rifting,transition and drifting.The Hauterivian and Barremian-Aptian (K1) deposits are the major source rock,which is of Ⅱ2/Ⅲ kerogen and prior to gas.The Valangnian (K1) shallow marine sandstone is the major reservoir and the Albian deep-water turbidite sandstone the second.Structural-stratigraphic traps are well developed in the drifting strata,but the structural traps mainly in the rifting stage.Traps formed in rifting stage are rather different with those formed in the drifting period.Up to 2014,41 oil and gas fields/reservoirs have been discovered.2.04× 107m3 of oil,2.02× 107m3 of condensate and 1.16 × 1011 m3 of recoverable gas reserves have been proved.Facts of discovered oil and gas show that great amount of oil and gas are accumulated in the Valangnian reservoir instead of others,and more reserves have been found in the west of the basin.The analysis of Agulhas fracture suggests that the difference of tectonic activity patterns between the east and west are the main controlling factor of oil and gas distribution in the Outenique basin.Future exploration should focus on the western part of the basin.关键词
奥坦尼瓜盆地/阿古拉斯走滑带/构造演化/油气分布Key words
Outenique Basin/Agulhas fracture/tectonic evolution/oil and gas distribution分类
能源科技引用本文复制引用
逄林安,康洪全,郝立华,程涛,孙鹏超..南非奥坦尼瓜盆地构造演化与油气差异分布[J].海洋地质前沿,2017,33(3):27-32,6.基金项目
国家“十三五”科技重大专项“西非和南美海域重点区油气地质评价及关键技术研究”(2016ZX05032-001) （2016ZX05032-001）
国家“十二五”科技重大专项“大陆边缘盆地类比与油气成藏规律研究”(2011ZX05030-001) （2011ZX05030-001）
