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塔里木盆地群 4井巴楚组 (C1b)的泥岩和灰岩中 ,生物标志化合物可分为两大类 :(1)正构烷烃和类异戊二烯烷烃类 ;(2 )三环和五环萜类。不同的模拟温度点具有不同的生物标志化合物组合 ,与以往的其他模拟实验结果类似。生物标志化合物的不同组合除源于生油岩中生物标志化合物不同外 ,还取决于无机元素的催化作用。不同的生油岩中 ,生物标志化合物先质存在差异 ,并且在不同的热演化阶段 ,释放出不同强度的生物标志化合物。因此 ,可以根据生物标志化合物的组成特征进行油源对比。塔里木盆地石炭系生油岩生成的原油 ,其三环萜烷C2 1/C2 3 比值一般大于 1,明显区别于寒武 奥陶系生油岩生成的原油 (C2 1/C2 3 <1) ,由此判断曲 1井原油可能来自石炭系泥岩生油岩。
Among the mudstones and limestones in the Bachu Formation (C1b) of Well 4 in Well Tarim Basin, the biomarker compounds can be divided into two broad categories: (1) n-alkanes and isoprenoids; (2) tricyclic and pentavalent Cyclopenoids. Different simulated temperature points have different biomarker combinations, similar to the results of other simulations in the past. In addition to the different combinations of biomarkers derived from biogenic rocks, the different combinations of biomarker compounds also depend on the catalytic action of inorganic elements. Different biogenic rocks have different biomarker precursors and release biomarkers of different intensities during different stages of thermal evolution. Therefore, oil source comparisons can be made based on the compositional characteristics of biomarker compounds. The crude oil produced from the Carboniferous source rocks in the Tarim Basin has a C2 1 / C2 3 ratio of tricyclic terpanes of more than 1, which is obviously different from that of the crude oil (C2 1 / C2 3 <1) produced by the Ordovician source rock in the Cambrian. It is concluded that Qu-1 well crude oil may come from Carboniferous mudstone source rock.