准噶尔盆地Z-1井油源分析  

Analysis of Oil Source in Well Z-1 in Junggar Basin

作　　者：李志明[1] 秦建中[1] 廖宗廷[2] 刘文斌[1] 范明[1] 汪传胜[1] 

机构地区：[1]中国石化石油勘探开发科学研究院无锡实验地质研究所,江苏无锡214151 [2]同济大学海洋与地球科学学院,上海200092

出　　处：《新疆石油地质》2006年第1期38-41,共4页Xinjiang Petroleum Geology

基　　金：中国石化西部新区勘探指挥部科技项目(XBKY04-34)资助

摘　　要：Z-1井位于准噶尔盆地昌吉凹陷、马桥凸起和中拐凸起3个二级构造单元结合部位,两个含油层段分别位于K1tg4788—4797m和J1s124 808.5—4812.5m.两层原油的族组分、全油碳同位素、饱和烃色谱和饱和烃色谱-质谱(GC-MS)分析结果表明,两层原油的族组分、碳同位素、各类生物标志物的地球化学特征基本一致,并且显示原油均主要源自成熟度较高的还原、含盐、富藻类湖相沉积岩系。油源分析认为,两层油主要源自二叠系烃源岩,并有侏罗系烃源岩或侏罗系和三叠系烃源岩原油的混入,这与区内存在多套烃源岩的地质背景吻合。Well Z-1 is located at joint among Changji sag, Maqiao swell and Zhongguai swell that are regarded as Grade-2 structural units in Junggar basin, in which two oil-bearing zones are found at 4 788-4 797 m （K1tg） and 4 808.5-4 812.5 m （J1s2^1）. The GC-MS analyses indicate that both of them have generally consistent geochemical properties in crude family component, carbon isotope and biomarkers, and the same oil source from reducing, sah-bearing and algae-enriched lake facies sediments with high maturity. Oil-source correlation shows that the crude oils in two zones mainly originate in the source rocks of Permian, mixed with certain crude oils from Jurassic or Jurassic-Triassic source rocks. Such a result is consistent with the geologieal background of existing multi-set souse rocks in the studied area.

关 键 词：准噶尔盆地 油源对比 生物标志物 碳同位素 

分 类 号：TE112.114[石油与天然气工程—油气勘探]