摘要
尼日尔三角洲盆地超深水区M区块3口钻井的原油物性和地球化学特征研究表明,该盆地超深水区具有正常原油和经历了生物降解的重质原油2种类型,原油可能来源于以海洋有机质输入为主、沉积于还原—弱氧化条件下的上白垩统—古新统海相烃源岩。根据尼日尔三角洲全盆地137个原油样品的地球化学综合分析结果,基于生源输入和沉积环境参数指标的差异性,重新将尼日尔三角洲盆地的原油族群划分为3类:陆源原油、海相原油和混合生源原油,并指出了各族群原油的分布和来源。
An investigation of physical properties and geochemical characteristics of oil from 3 wells in Block M, the ultra-deep water area, Niger Delta basin, has shown two types of oil there, i.e. , the normal oil and biodegraded heavy oil, which may come from Upper Cretaceous-Paleocene marine source rocks predomina- ted by sea organics and deposited in a reducing-weak- oxidizing environment. Based on a comprehensive geo- chemical analysis of 137 oil samples throughout Niger Delta basin and their differences in biological source and depositional environment, oil from the basin were afresh divided into three groups： terrigenous oil, ma- rine oil and mixed oil, and their distribution and source rocks were indicated.
出处
《中国海上油气》
CAS
CSCD
北大核心
2014年第4期1-7,24,共8页
China Offshore Oil and Gas
基金
"十二五"国家科技重大专项"大陆边缘盆地类比与油气成藏规律研究(编号:2011ZX05030-001)"部分研究成果
关键词
尼日尔三角洲
超深水区
原油
地球化学特征
族群划分新方案
Niger Delta
ultra-deep water area
oi｜
gchemical characteristics l new conception ofgroup division
