摘要
本文以塔里木盆地为例,通过流体势分析、油田水化学分析、包裹体测温和原油中含氮化合物的丰度及比值研究,确定塔中地区晚海西期油气主要来自东北和西北两个方向,在中段形成塔中4油藏,并通过流体运移方向分析,认为塔中4油藏在喜马拉雅期受淡水冲洗破坏,使油气储量大大减少;轮南地区的油气主要来自南部的满加尔凹陷和两侧的哈拉哈塘凹陷和草湖凹陷,其中草湖凹陷两次供油气,而其他两个凹陷三次供油气。流体运移方向的研究有助于认识油气的分布规律,对确定勘探的有利区带和目标具有重要意义。
Based on the analysis of fluid potential, chemical analysis of oil field water, study of the content and ratio of nitrogen-bearing compounds in crude oil, and the temperature of fluid inclusions, the authors suggest that Hercynian oil and gas in the Tazhong area should come mainly from the northeast and northwest and formed the Tazhong-4 oil accumulation. Through an analysis of the migration direction of fluid, the authors consider that Tazhong-4 oil accumulation was destroyed by washing of fresh water during the Himalayan period, thus resulting in great decrease of the reserves of oil and gas. In the Lunnan area, oil and gas came mainly from the Manjia'er depression in the southern part of the Lunnan area as well as the Halahatang and Caohu depressions at both sides of the Lunnan area, of which the Caohu depression has supplied gas twice and the other two depressions have supplied gas three times. The study of the migration direction of fluid is helpful to gaining knowledge of the distribution characteristics of oil and gas and has great significance for the determination of favorable zones and targets of petroleum exploration.
出处
《地质论评》
CAS
CSCD
北大核心
2001年第2期201-206,共6页
Geological Review
基金
国家自然科学基金(编号 49772162)
博士点基金(编号 199902842)
