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石油在运移过程中,极性含氮化合物与围岩(如孔隙、裂缝、断层等)表面相互作用。随着运移距离增加,其在原油中的含量不断降低,并发生石油极性含氮化合物的分馏作用。以前的研究表明,石油中咔唑类含氮化合物的分布受母质类型、沉积环境、成熟度的影响很小,而主要受石油运移的影响。本文主要运用咔唑类化合物的分布来研究石油的运移并迫踪烃源岩。文中对来自塔里木盆地塔中地区6口井的7个原油样品的咔唑类化合物的类型、含量及其分布特征作了详细的探讨。得到
During the migration of petroleum, polar nitrogen compounds interact with the surface of surrounding rocks (such as pores, cracks, faults, etc.). As the migration distance increases, its content in crude oil decreases continuously, and fractionation of petroleum polar nitrogenous compounds takes place. Previous studies have shown that the distribution of carbazole nitrogen compounds in petroleum is little affected by the type of parent material, sedimentary environment and maturity, but is mainly affected by petroleum migration. In this paper, we mainly use the distribution of carbazole compounds to study the migration of petroleum and to trace the source rocks. In this paper, the types, contents and distribution characteristics of carbazole compounds in seven crude oil samples from six wells in Tazhong area of Tarim Basin are discussed in detail. get