准噶尔盆地南缘霍玛吐背斜带油气源对比研究

Comparative Study on Oil and Gas Sources in the Huomatu Anticline in the Southern Margin of the Junggar Basin

所谓油气源对比,是从成因关系出发,将含油气盆地油气与烃源岩之间进行对比,从而分析已聚集油气的来源,将油气和烃源岩一一对应。其原理是根据有机化学的知识,确定对比参数,从而分析油、气及与源岩之间的配置关系。文章是对比原油(天然气)和烃源岩之间相同馏分中某种成分的含量,确定了原油A、B、C三大类及其地球化学特征和标志性特征。结果可对分析油气朝哪个方向运移、运移距离和油气的次生变化,寻找油气聚集带,确定有利的勘探区域,为油气开发提供指导。

The so-called oil and gas source comparison is based on the genetic relationship between the oil and gas basins and the source rocks. The source of the accumulated oil and gas is analyzed,and the oil and gas and source rocks are mapped one by one. The principle is to determine the contrast parameters based on the knowledge of organic chemistry to analyze the configuration relationship between oil,gas and source rock. This paper compares the content of a certain component in the same fraction between crude oil(natural gas)and source rock,and determines the three major categories of crude oil A,B,C and their geochemical characteristics and landmark characteristics. The results can be used to analyze the direction of migration,migration distance and secondary changes of oil and gas in oil and gas,to find oil and gas accumulation zones,to identify favorable exploration areas,and to provide guidance for oil and gas development.