加蓬盆地盐下油气勘探潜力评价

发布时间：2018-06-03 23:32

本文选题：西非 + 加蓬盆地　；参考：《中国石油勘探》2017年05期

【摘要】：盐下油气勘探一直是世界关注的热点。通过对加蓬盆地盐下综合地质研究,从裂谷期岩石圈动力学变形机制上与南大西洋被动大陆边缘盆地进行类比,加蓬盆地属于宽裂谷盆地,裂谷发育规模较大,油气勘探潜力较大。重点对盆地已发现的典型油气藏进行解剖,认为加蓬盆地盐下基本石油地质条件优越,裂谷期湖相烃源岩有机质丰富,烃源潜力大且供烃量充足;盐下发育上、下两套储盖组合,油气成藏主要以上组合的河流—三角洲相Gamba组、Dentale组砂岩储层为主,储集物性好;盐下湖相烃源岩是否发育和圈闭的落实是控制深水区盐下油气能否成藏的关键因素。综合研究认为加蓬盆地盐下具备发育大型油气田的潜力,是海外油气勘探的重点关注区。
[Abstract]:Oil and gas exploration under salt has always been a hot spot of concern in the world. Through the study on the comprehensive geology of the Gabon basin, the dynamic deformation mechanism of the rift period is analogous to the passive continental margin basin in southern the Atlantic. The Gabon basin belongs to the wide rift basin, the Rift Valley is larger and the oil and gas exploration potential is larger. The typical oil and gas reservoirs are dissected. It is considered that the basic petroleum geological conditions under salt in the Gabon basin are superior, the organic matter of the lacustrine source rocks in the rift period is rich, the source potential is large and the hydrocarbon supply is abundant; the next two sets of reservoir cap assemblages are developed under salt, the river delta facies Gamba group, the main reservoir of oil and gas accumulation, and the reservoir of the Dentale group sandstone are the main reservoir, and the reservoir is the main reservoir. The development of the source rock and the implementation of the trap are the key factors to control the accumulation of oil and gas under salt in the deep water area.
【作者单位】：中海油研究总院;
【基金】：国家科技重大专项“非洲、中东重点勘探区油气地质评价及关键技术研究”(2011ZX05030-003)
【分类号】：P618.13

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