现代地质Issue(6)：1425-1434,10.
库车坳陷东部凝析油特征及其成藏意义
Characteristics of Condensate Oil and Its Significance for Hydrocarbon Accumulation in the Eastern Kuqa Depression
摘要
Abstract
Based on the the experimental data of physical properties,components,light hydrocarbon compo-nents,carbon isotope and biomarker,physical properties and geochemical characteristics of condensate oil in the eastern Kuqa Depression,were systematically analysed.Genetical type of condensate oil and hydrocarbon charging history were confirmed.The results show that condensate oil in the eastern Kuqa Depression is typical continental oil,which is featured by low density,low viscosity,low freezing point,low sulfur content and medi-um wax content.Relationship between carbon isotope and biomarker indicates that condensate oil is mainly de-rived from Triassic lacustrine source rocks.Condensate oil and natural gas in the eastern Kuqa Depression have different origins.The condensate oil is mainly derived from the mature lacustrine source rocks,and natural gas is originated from mature to post-mature coal-measure source rocks.The maturity of condensate oil is lower than that of natural gas,and early oil suffered from gas washing.Therefore,the eastern Kuqa Depression has the charging feature of ‘early-stage accumulation of oil and late-stage accumulation of gas’.Today's condensate oil is early accumulating oil which undergone gas washing.关键词
凝析油/生物标志化合物/气洗/油气成藏/库车坳陷东部Key words
condensate oil/biomarker/gas washing/hydrocarbon accumulation/the eastern Kuqa Depression分类
能源科技引用本文复制引用
李峰,姜振学,李卓,肖中尧,袁文芳,曹少芳..库车坳陷东部凝析油特征及其成藏意义[J].现代地质,2015,(6):1425-1434,10.基金项目
国家自然科学基金重点项目（40972088）；国家重点基础发展计划项目（2011CB201105）；国家科技重大专项（2011ZX05003－001，2011ZX05008－004）。 （）
