准噶尔盆地车排子凸起中生界稠油油源分析  

Mesozoic Heavy Oil Source Analysis of Chepaizi Uplift in Junggar Basin

作　　者：尹艳芳 常象春[1] 徐佑德[2] 苏蕾 柳忠泉[2] Yin Yanfang;Chang Xiangchun;Xu Youde;Su Lei;Liu Zhongquan(Shandong University of Science and Technology,Qingdao,Shandong 266590,China;Sinopec Shengli Oilfield Company,Dongying,Shandong 257015,China)

机构地区：[1]山东科技大学,山东青岛266590 [2]中国石化胜利油田分公司,山东东营257015

出　　处：《特种油气藏》2024年第1期39-47,共9页Special Oil & Gas Reservoirs

基　　金：国家自然科学基金“非常严重—强烈生物降解原油的分子地球化学表征及定量分级评价”(42072172)。

摘　　要：为明确准噶尔盆地车排子凸起中生界稠油的油源,利用中生界原油的气相色谱-质谱分析结果,结合层次聚类分析法、生物标志物参数恢复法,对原油生物降解程度进行定量评价,对典型生物标志物原始质量进行恢复,并对严重生物降解的稠油进行油源研究。结果表明:车排子凸起中生界原油生物降解级别达到6级以上(PM6),可细分为A1、A2两个族群。所提出的生物标志物参数恢复法进行油源对比效果显著,证实了A1原油与沙湾凹陷二叠系烃源岩具有亲缘性,A2原油可能来自沙湾凹陷二叠系烃源岩、车排子凸起石炭系烃源岩及四棵树凹陷侏罗系烃源岩的混合,主成分分析(PCA)进一步支持和验证了该结论。研究结果对深化车排子凸起中生界的油气勘探部署具有重要参考作用。Based on the analysis results of gas chromatography-mass spectrometry(GC-MS)of the Mesozoic crude oils,the biodegradation degree of the crude oils was quantitatively evaluated,the original quality of the typical biomarkers was recovered,and the oil source of heavy oils severely biodegraded was investigated in combination with hierarchical cluster analysis and biomarker parameter recovery method to clarify the oil source of the Mesozoic heavy oils from Chepaizi Uplift in Junggar Basin.The results show that the biodegradation level of crude oils in the Mesozoic of Chepaizi Uplift reaches more than 6(PM6),which could be subdivided into two groups:A1 and A2.The proposed biomarker parameter recovery method for oil source comparison is effective,confirming that the A1 crude oils are related to the Permian hydrocarbon source rocks of Shawan Depression,and the A2 crude oils may come from the mixing of the Permian hydrocarbon source rocks of Shawan Depression,the Carboniferous hydrocarbon source rocks of Chepaizi Uplift and the Jurassic hydrocarbon source rocks of Sikeshu Depression,which is further supported and validated by principal component analysis(PCA).The study results are an essential reference for deepening the hydrocarbon exploration and deployment in the Mesozoic of the Chepaiko Uplift.

关 键 词：生物降解 油源对比 生物标志物参数恢复法 中生界 车排子凸起 准噶尔盆地 

分 类 号：TE122[石油与天然气工程—油气勘探]