CAJ | 학술논문

通过对北加蓬次盆区域构造背景的研究，综合分析各成藏要素条件，结合油气田类型、平面及纵向上的分布，认为北加蓬次盆地是典型的裂谷和被动大陆边缘叠合盆地，发育裂谷前、裂谷、过渡阶段和漂移阶段4套沉积地层。目前北次盆已发现油田数量多，已探明油气资源量较大且产量较高，证实具备较好的油气成藏条件：其中盐上Azile-Anguille组海相页岩为主力优质源岩，大型深水浊积扇体作为有利储层。盐岩活动形成了一系列盐构造作为规模型油气聚集圈闭。目前已发现油气田以构造型为主，油气田主要分布在海上，纵向上油气主要分布在森诺期浊积扇砂体。
통과대북가봉차분구역구조배경적연구，종합분석각성장요소조건，결합유기전류형、평면급종향상적분포，인위북가봉차분지시전형적렬곡화피동대륙변연첩합분지，발육렬곡전、렬곡、과도계단화표이계단4투침적지층。목전북차분이발현유전수량다，이탐명유기자원량교대차산량교고，증실구비교호적유기성장조건：기중염상Azile-Anguille조해상혈암위주력우질원암，대형심수탁적선체작위유리저층。염암활동형성료일계렬염구조작위규모형유기취집권폐。목전이발현유기전이구조형위주，유기전주요분포재해상，종향상유기주요분포재삼낙기탁적선사체。
By comprehensive study on the regional tectonic setting, reservior-forming factors and distribution regularities of North Gabon sub-basin, it is considered to be a rift and passive continental margin superimposed basin, in which four sedimentary forma-tions were developed: pre-rift period, rift period, transition period and drift period. At present, North sub-basin, in which a number of oilfields are found and large hydrocarbon resources and high yield are proved to be, is proved to have a better hydrocarbon accu-mulation conditions. The conditions have post-salt Azile-Anguille shale as the main mother rock for hydrocarbon generation, and large deep-water turbidite fan body as a good reservoirs. The activities of salt rocks have generated a series of salt structure which become the most important traps for hydrocarbon accumulation. The oil and gas reserviors are mainly structural type and mainly dis-tributed in the sea which are controlled by Senomian turbidite fan sand bodies vertically.