现代地质2025，Vol.39Issue(3)：814-824,11.DOI:10.19657/j.geoscience.1000-8527.2025.002
准噶尔盆地莫西庄地区侏罗系三工河组原油芳烃地球化学特征及油源对比
Geochemical Characteristics of Aromatics in Crude Oil and Oil-Source Correlation of the Jurassic Sangonghe Formation in Moxizhuang,Junggar Basin
摘要
Abstract
In this study,the crude oil samples of Jurassic Sangonghe Formation in Moxizhuang area were select-ed and analyzed by geochemical experiments.The geochemical characteristics of aromatic compounds in crude oil samples of Sangonghe Formation in Moxizhuang area were analyzed by gas chromatography-mass spectrome-try.Combined with carbon and hydrogen isotopes of n-alkanes,the source,maturity and sedimentary environ-ment of organic matter were determined.The results show that the crude oil of Jurassic Sangonghe Formation in Moxizhuang area is dominated by phenanthrene series compounds,and the contents of pyrene,benzopyrene compounds are relatively abundant.The contents of 1,2,5-trimethylnaphthalene,biphenyl,anthracene and perylene derived from higher plants are less.Combined with the characteristics of hydrogen isotope composition of monomer hydrocarbons,it indicates that the organic matter is mainly derived from lower aquatic organisms,with a little contribution from higher plants.The dominant fluorene in the three fluorene series compounds re-flects that the sedimentary environment of the crude oil in the Sangonghe Formation is dominated by freshwater deposition,and the reducibility is weak.The maturity parameters such as MPI-1,F1 and F2 all show that the thermal evolution degree of crude oil in Sangonghe Formation is high and it is in the high maturity stage.By using cluster analysis method,combined with the comparison results of monomer hydrocarbon carbon isotope and some aromatic hydrocarbon parameters,it is indicated that the crude oil of Sangonghe Formation has a good ge-netic relationship with the source rock of Permian Lower Wuerhe Formation.The results can provide reference for the exploration and development of oil and gas resources in Moxizhuang area.关键词
准噶尔盆地/莫西庄地区/三工河组/原油/芳烃/同位素/油源对比Key words
Junggar Basin/Moxizhuang area/Sangonghe group/crude oil/aromatic/isotope/oil-source cor-relation分类
地质学引用本文复制引用
曲彦胜,潘志强,何大祥,钟宁宁,牛花朋,杨梅华,韩立国..准噶尔盆地莫西庄地区侏罗系三工河组原油芳烃地球化学特征及油源对比[J].现代地质,2025,39(3):814-824,11.基金项目
非常规油气省部共建协同创新中心(长江大学)开放基金项目(UOG2020-12) （长江大学）
中石化重点攻关课题(P21077-2). （P21077-2）
