库车坳陷却勒1井原油的重排藿烷系列及油源对比  

Rearranged hopanes in oils from the Quele 1 Well, Tarim Basin,and the significance for oil correlation

作　　者：肖中尧[1] 黄光辉[2] 卢玉红[1] 吴懿[1] 张秋茶[1] 

机构地区：[1]中国石油塔里木油田分公司 [2]长江大学

出　　处：《石油勘探与开发》2004年第2期35-37,共3页Petroleum Exploration and Development

摘　　要：塔里木盆地库车坳陷却勒 1井古近系发现的原油存在高丰度的重排藿烷系列及C3 0 未知三萜类化合物 ,C19—C2 6三环萜呈现以C19为主峰逐渐下降的分布形式 ,具有陆相原油的地球化学特征。在库车坳陷中生界烃源岩中 ,仅中侏罗统恰克马克组湖相泥岩存在高丰度的重排藿烷系列 ,表明却勒 1井原油源自中侏罗统恰克马克组 ,而恰克马克组湖相泥岩主要沉积于富含钙质的弱碱性环境 ,适度碱化条件下黏土矿物的催化作用有助于重排藿烷的形成。图 4参The oils from the Quele 1 Well are identified as from terrestrial source rocks based on the following characters: ① Abundant occurrence of rearranged hopanes; ② An unknown C_(30) terpane compound; and ③ the distribution of the C_(19)-C_(26) tricyclic terpanes peaks at C_(19 )and declines with increasing carbon number. Hydrocarbons from the mudstones in the Qakemake Formation (J_2q) are the only sources that possess such unique characteristics, indicating the very source for the oils in the Quele 1 Well. Apparently, the Mesozoic lacustrine sediments in the Quele 1,Kuche Depression serve as the single most important source rocks and the depression is of significant exploration potential.

关 键 词：重排藿烷 油源对比 烃源岩 塔里木盆地 却勒1井 

分 类 号：TE122.11[石油与天然气工程—油气勘探]