石油实验地质2018，Vol.40Issue(3)：410-417,8.DOI:10.11781/sysydz201803410
渤海湾盆地辽西凸起北段锦州20油田原油地球化学特征及油源对比
Geochemical features and oil-source correlation of crude oils from JZ20 oil field on the northern margin of Liaoxi Uplift,Bohai Bay Basin
摘要
Abstract
The Liaoxi Uplift is one of the regions with the highest level of exploration in the Liaodong Bay area of the Bohai Sea. Geochemical analyses were carried out on crude oil samples from the Shahejie and Dongying formations in the JZ20 oil field on the northern margin of Liaoxi Uplift. The physical properties, hydrocarbon group composition, maturity and biomarker characteristics of crude oil were studied, based on which an oil-source correlation was made. The crude oil is light with a low maturity and low sulfur content. The saturated hydrocarbon chromatograms of the oil are distributed fully, indicating no biodegradation. The organic matter source is mixed with a minor terrigenous input to the crude oil in the Shahejie Formation and a significant terrige-nous organic matter input to the crude oil in the Dongying Formation. The source rock was deposited in an anoxic to suboxic and brackish or saline water environment. Crude oil of the Shahejie Formation originated from the third and the first members of Shahejie Formation in the Liaoxi Sag. Crude oil of the Dongying Formation originated from the third member of Shahejie Formation in the Liaoxi Sag and the third member of Dongying Formation in the Liaozhong Sag. In addition, crude oil of the Dongying Formation is characterized by a double-sag hybrid source hydrocarbon supply.关键词
饱和烃色谱/原油/生物标志物/油源对比/锦州20油田/辽西凸起/渤海湾盆地Key words
saturated hydrocarbon chromatogram/crude oil/biomarkers/oil-source correlation/JZ20 oil field/Liaoxi Uplift/Bohai Bay Basin分类
能源科技引用本文复制引用
田德瑞,吴奎,张如才,潘文静,王鑫..渤海湾盆地辽西凸起北段锦州20油田原油地球化学特征及油源对比[J].石油实验地质,2018,40(3):410-417,8.基金项目
国家科技重大专项"渤海辽东湾地区潜在富烃凹陷成藏研究与有利勘探方向预测"(2016ZX05024-002-006)资助. （2016ZX05024-002-006）
