论文部分内容阅读
结合生物标志化合物特征,利用原油中含氮化合物组成和相对丰度的变化,讨论柴达木盆地西南缘乌南地区原油的运移方向。结果表明,乌南原油的类型较为一致,来自于同一油源,成熟度变化较小,原油中含氮化合物的分布和组成特征较好地指示了该区原油运移方向,随着运移作用的加强,含氮化合物绝对浓度降低,“屏蔽”型与“暴露”型或“半暴露”型化合物的比值增加。乌南地区油源在其西侧邻近的生油凹陷,运移方向主要是自西向西北和自西向东南方向运移。
Combining with the characteristics of biomarker compounds, the migration direction of crude oil in Wunan area on the southwestern margin of the Qaidam basin was discussed based on the composition and relative abundance of nitrogenous compounds in crude oil. The results show that the types of crude oil in Wunan are consistent, come from the same oil source, and have little change in maturity. The distribution and compositional characteristics of nitrogenous compounds in crude oil indicate the direction of crude oil migration. With the migration , The absolute concentration of nitrogen-containing compounds decreases, and the ratio of “screened” type to “exposed” type or “semi-exposed” type compound increases. Wunan area oil source in its west side of the oil production depression, the migration direction is mainly from west to northwest and from west to southeast direction of migration.