石油地质与工程2025，Vol.39Issue(3)：68-77,10.
奈曼凹陷东部斜坡带义县组油源对比及地质意义
Oil source correlation and geological significance of Yixian Formation in the eastern slope zone of Naiman Sag
摘要
Abstract
In order to clarify the source of the crude oil in the Lower Cretaceous Yixian Formation of the eastern slope zone in the Naiman Sag,analytical methods such as physical properties of crude oil,group composition,and saturated hydrocarbon gas chromatography-mass spectrometry(GC-MS)were used to analyze the geochemical characteristics of the crude oil and source rocks in the eastern slope zone of the Naiman Sag.The results indicate that the crude oil from the Yixian Formation in the eastern slope zone has high density and viscosity,and is a common heavy heavy oil.There are mainly two sets of source rocks de-veloped in the eastern slope zone,namely the Yixian Formation and the lower part of the Jiufotang Forma-tion.The Yixian Formation is a good source rock with a low-maturity to maturity degree of evolution,and the lower part of the Jiufotang Formation is a good to high-quality source rock,also with a low-maturity to maturity degree of evolution.Through oil source correlation analysis,the crude oil in the Yixian Formation mainly comes from the mudstone of the Yixian Formation,which is a"self-generating and self-storing"type.The discovery of the"self-generating and self-storing"type in the Yixian Formation has expanded the exploration area of the eastern slope zone and provided a basis for the next exploration.关键词
奈曼凹陷/义县组/下白垩统/油源对比/烃源岩评价Key words
Naiman Sag/Yixian Formation/lower Cretaceous/oil source correlation/source rock evaluation分类
能源科技引用本文复制引用
刘海艳,田涯,李德华,王延山,张甲明,郝亮,刘晓丽,崔宇晶,范家铭..奈曼凹陷东部斜坡带义县组油源对比及地质意义[J].石油地质与工程,2025,39(3):68-77,10.基金项目
中国石油天然气股份有限公司科学研究与技术开发项目"渤海湾及外围盆地风险勘探领域和目标研究、工程技术攻关及现场试验"(2022KT0502)、辽河油田重大科技专项"开鲁探区区域构造演化与主要构造层分布"(2024QZJC-04)、辽河油田重大科技专项"奈曼凹陷油碱共生矿床勘查开采技术研究"(2023KJXM-03). （2022KT0502）
