沙特鲁卜哈利盆地古生界石油地质特征及勘探潜力分析

PETROLEUM GEOLOGICAL CHARACTERISTICS AND EXPLORATION POTENTIAL IN THE PALEOZOIC OF RUB AL KHALI BASIN, SAUDI ARABIA

吕雪雁

Lü Xueyan

中国石化, 石油勘探开发研究院, 海外中心, 北京, 100083

Overseas Research Center, Research Institute of Petroleum Exploration and Production, SINOPEC, Beijing 100083, China

利用石油地质学、储层地质学、油气成藏等理论分析了沙特境内的鲁卜哈利盆地古生界石油地质特征和油气勘探潜力。分析结果认为,鲁卜哈利盆地位于世界上油气最富集的波斯湾含油气区,长期处于构造背景稳定的克拉通内裂谷和被动大陆边缘,沉积层序齐全,沉积厚度超过10 km,纵向上形成众多生储盖组合,油气成藏条件优越。海西运动期间发生的挤压和隆升作用对盆地古生界圈闭的形成起了决定性作用,这些背斜、断背斜以及构造岩性圈闭在扎格罗斯山形成的挤压作用中受到一定程度的改造,到定型期基本早于志留系源岩油气大规模运移的时间,二者具有良好的配置关系。鲁卜哈利盆地古生界目前处于勘探初期,比较已经发现的储量和USGS统计的古生界中待发现储量,类比盆地北部中阿拉伯地质省的勘探现状,预示该盆地古生界有很好的油气勘探前景。

Petroleum geological characteristics and exploration potential have been analyzed in the Rub al Khali Basin with the theory of petroleum geology,reservoir geology and petroleum entrapment.The Rub al Khali Basin is located in the most proliferic hydrocarbon accumulation region,developing multiple reservoirs,sources and seals during the open and close of Paleo and new Tethyan oceans.The Hecynian movement plays an important role in the formation of Paleozoic traps in this basin,which in general include anticlines,faulted anticlines and structural-stratigraphic type occasionally.Although these Paleozoic traps to some degree reactivate during the formation of Zagros Mountain,they develop earlier than the main hydrocarbon migration time.Thus between them there exist better charging relationship.The Rub al Khali Basin now is in the immature exploration stage,with great potential in the Paleozoic.

https://doi.org/10.11781/sysydz200505479