石油实验地质2016，Vol.38Issue(2)：266-272,7.DOI:10.11781/sysydz201602266
塔里木盆地喀什凹陷烃源岩地球化学特征和油源对比
Geochemical characteristics of source rocks and oil-source correlation in the Kashi Sag, Tarim Basin
摘要
Abstract
The Kashi Sag in Tarim Basin shows good hydrocarbon exploration prospects with superior accumulation conditions. However, the only discovery is the Akmomu gas field. One important reason is that there is no clear under⁃standing of hydrocarbon source rocks. Through systematic sampling and geochemical analysis of 9 profiles in the Kashi Sag, we concluded that the Lower Carboniferous and Lower-Middle Jurassic are the main hydrocarbon source rocks in the Kashi Sag. The Lower Carboniferous marine mudstones and marlstones are medium⁃good hydrocarbon source rocks with typeⅡorganic matter that are widely distributed with large thickness. They are highly mature and mainly produce dry gas. Lacustrine mudstones of organic matter typeⅡin the Middle Jurassic Yangye Formation and swamp facies mudstones of organic matter typeⅢin the Lower Jurassic Kangsu Formation are lower quality potential sources. They are mature and mainly produce oil and light oil. Oil-source correlation indicated that the source rocks of Heiziwei oil seepage, Kelatuo oil sand and well Ake1 natural gas is Carboniferous, which is the main source rock sequence in the sag. The Lower-Middle Jurassic source rocks have restricted hydrocarbon generation potential and are distributed locally and were less important for hydrocarbon accumulation.关键词
地球化学特征/油源对比/石炭系/侏罗系/喀什凹陷/塔里木盆地Key words
geochemical characteristics/oil-source correlation/Carboniferous/Jurassic/Kashi Sag/Tarim Basin分类
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孟苗苗,康志宏,徐耀辉,于超,刘琪..塔里木盆地喀什凹陷烃源岩地球化学特征和油源对比[J].石油实验地质,2016,38(2):266-272,7.基金项目
全国油气资源战略选区调查与评价国家专项（第二批）（2009GYXQ02）资助。 （）
