塞内加尔盆地成藏组合划分与资源潜力评价

发布时间：2018-06-21 12:31

本文选题：塞内加尔盆地 + 油气分布　；参考：《现代地质》2017年06期

【摘要】：西非塞内加尔盆地是全球近期油气勘探最活跃的前缘盆地之一。基于盆地最新的油气藏数据和勘探成果,应用石油地质综合研究和含油气系统分析的方法,研究了塞内加尔盆地的油气分布规律和主控因素,以成藏组合为评价单元,评估了待发现油气可采资源量,并探讨了盆地油气资源潜力和未来的勘探领域。研究表明,盆地发育3套含油气系统,志留系含油气系统、盐下三叠系含油气系统和白垩系含油气系统,白垩系含油气系统是最重要的含油气系统。区域上,盆地的油气主要分布于毛里塔尼亚次盆和北部次盆;层系上,油气主要储集于上白垩统赛诺曼阶、下白垩统阿尔比阶和中新统;埋深上,盆地油气储量集中分布于1 500~2 000 m和2 000~2500 m。油气富集的主要控制因素是生储盖的有效配置、优质的储层和圈闭及盐活动。资源评价结果表明,塞内加尔盆地待发现石油、天然气和凝析油的可采资源量分别为1 508.3×106bbl、36.3 Tcf(万亿立方英尺)和327.0×106bbl,合计7 887.9×106boe油当量,最具勘探潜力的成藏组合是上白垩统赛诺曼阶成藏组合和下白垩统阿尔比阶成藏组合。
[Abstract]:The Senegalese basin in West Africa is one of the most active oil and gas exploration basins in the world. Based on the latest oil and gas reservoir data and exploration results in the basin, the oil and gas distribution and main controlling factors in Senegal basin are studied by using the method of petroleum geology comprehensive study and petroleum system analysis. The reservoir formation assemblage is taken as the evaluation unit. The amount of recoverable oil and gas resources to be discovered is evaluated, and the potential of oil and gas resources in the basin and the exploration fields in the future are discussed. The results show that there are three sets of oil and gas systems in the basin, including Silurian system, Triassic system and Cretaceous system, and the Cretaceous system is the most important system. Regionally, the oil and gas in the basin are mainly distributed in the Mauritanian subbasin and the northern subbasin, and in the strata, the oil and gas are mainly stored in the Sainoman stage of the Upper Cretaceous, the Arbi stage in the Lower Cretaceous and the Miocene in the Lower Cretaceous. The oil and gas reserves in the basin are concentrated at 1 500 ~ 2 000 m and 2 000 ~ 2 500 m. The main controlling factors of oil and gas enrichment are the effective allocation of source, reservoir and cap, high quality reservoir and trap and salt activity. The results of resource evaluation show that the recoverable resources of oil, natural gas and condensate oil in Senegal basin are 1 508.3 脳 10 6 bbln 36.3 TCFF (1 trillion cubic feet) and 327.0 脳 10 6 bbl. respectively, which total 7 887.9 脳 106boe oil equivalent. The most potential reservoir formation assemblages are the Upper Cretaceous Seiman and the Lower Cretaceous Arbi.
【作者单位】：中国石化石油勘探开发研究院;
【基金】：国家科技重大专项(2016ZX05033-001) 中国石化集团国际石油勘探开发有限公司项目(SIPC-2015-02-004-E)
【分类号】：P618.13

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