西非科特迪瓦盆地深水区油气地质特征及成藏主控因素

发布时间：2018-01-29 08:55

本文关键词： 深水浊积扇断层成藏主控因素油气地质特征科特迪瓦盆地　出处：《地质科技情报》2017年05期 　论文类型：期刊论文

【摘要】：科特迪瓦盆地位于西非几内亚湾北部,为典型的转换型大陆边缘盆地,是目前世界深水油气勘探的热点区域。以科特迪瓦盆地的构造演化、油气地质条件以及油气田最新发现为基础,采用油气地质综合分析方法,明确了盆地深水油气成藏的主控因素,可以为进一步明确勘探目标提供帮助,并为同类型盆地的油气勘探提供借鉴。研究表明,目前盆地共发育3套烃源岩,3套储层及多套盖层。盆地内最主要的深水成藏组合为上白垩统自生自储式和下生上储式成藏组合,其烃源岩为上白垩统森诺曼阶-土伦阶厚层海相页岩;储层主要是土伦阶-森纳阶深水浊积扇砂体;盖层主要是上覆新生界厚层海相页岩。盆地深水油气成藏主控因素为深水浊积扇和断层,二者相匹配共同控制油气成藏。
[Abstract]:The C 么 te d'Ivoire basin is located in the north of the Gulf of Guinea in West Africa. It is a typical transformational continental margin basin, which is a hot spot of deep water oil and gas exploration in the world at present. Based on the oil and gas geological conditions and the latest discoveries of oil and gas fields, the main controlling factors of oil and gas accumulation in deep water in the basin are determined by using the comprehensive analysis method of oil and gas geology, which can provide help for further defining exploration targets. The study shows that there are three sets of hydrocarbon source rocks developed in the basin at present. The main deep-water reservoir assemblages in the basin are the Upper Cretaceous authigenic self-reservoir type and the Lower Cretaceous upper reservoir assemblage, and the source rocks are the Upper Cretaceous Cenoman-Toulon thick marine shale. The reservoir is mainly Toulon-Senna deep-water turbidite fan sand body. The overlying Cenozoic thick marine shale is the main controlling factor of deep-water hydrocarbon accumulation in the basin, which is controlled by deep-water turbidite fan and fault, which are matched together to control oil and gas accumulation.
【作者单位】：西北大学地质系;中国海洋石油总公司研究总院;中国地质调查局西安地质调查中心;
【基金】：国家科技重大专项“南海深水区大油气田成藏条件与世界深水区成藏主控因素类比分析”(2016ZX05026007)
【分类号】：P618.13
【正文快照】： 地质特征及成藏主控因素张凤廉1,屈红军1,张功成2,赵冲1,冯杨伟3(1.西北大学地质系,西安710069;2.中国海洋石油总公司研究总院,北京100027;3.中国地质调查局西安地质调查中心,西安710054)20世纪70年代末期,国外油气勘探逐渐从浅水区向深水区转变[1-2],并取得了一系列的勘探突

【相似文献】