尼日尔三角洲陆上区油气差异分布主控因素  

Main controlling factors of oil and gas differential distribution in onshore area of Niger delta

作　　者：陶叶 何幼斌[1,2] 刘建宁 吴东胜[1,2] TAO Ye;HE Youbin;LIU Jianning;WU Dongsheng(School of Geosciences,Yangtze University,Wuhan 430100,China;Key Laboratory of Exploration Technologies for Oil and Gas Resources(Yangtze University),Ministry of Education,Wuhan 430100,China;Guizhou Polytechnic of Communications,Guiyang 551400,China)

机构地区：[1]长江大学地球科学学院,武汉430100 [2]油气资源与勘探技术教育部重点实验室(长江大学),武汉430100 [3]贵州交通职业技术学院,贵阳551400

出　　处：《中国科技论文》2022年第9期992-1000,共9页China Sciencepaper

基　　金：国家自然科学基金资助项目(42002150);国家科技重大专项(2017ZX05032-002-003)。

摘　　要：为探明尼日尔三角洲烃源岩对油气差异分布的影响,基于现有研究成果,以源控论为理论指导,利用钻井、地化资料,对尼日尔三角洲的烃源岩特征、油气田(藏)的平面分布特征及烃源岩对油气分布的影响进行了研究。结果表明,烃源岩发育区与油气聚集区在平面上对应良好且烃源岩有机质丰度高,类型以Ⅱ、Ⅲ型为主,且具有二元特征,成熟度为成熟至过成熟。油气差异分布主控因素具有明显的分段性,西北段油气藏(田)分布由有机质成熟度和保存条件2个因素共同控制,中段则主要受控于有机质成熟度,东南段油气藏(田)的分布以有机质类型控制为主。In order to explore the influence of source rocks in the Niger delta on the differential distribution of oil and gas, the theory of source control was taken as the theoretical guide, and then the drilling and geochemical data were used to analyze the characteristics of source rocks, the planar distribution characteristics of oil and gas fields and the influence of source rocks on oil and gas distribution. The results show that the development area of source rocks corresponds well with the oil and gas accumulation area, and the organic matter abundance of source rocks is high. The types are mainly type Ⅱ and Ⅲ, with “binary” characteristics, and the maturity is mature to over mature. The main controlling factors of oil and gas differential distribution have obvious segmentation. The distribution of oil and gas reservoirs in the northwest section is jointly controlled by organic matter maturity and preservation conditions, while the middle section is mainly controlled by organic matter maturity, and the distribution of oil and gas reservoirs in the southeast section is mainly controlled by organic matter type.

关 键 词：尼日尔三角洲 油气分布 有机质类型 烃源岩 有机质成熟度 

分 类 号：TE122.2[石油与天然气工程—油气勘探]