【摘要】 对松辽盆地和塔里木盆地的混源油气的运移方向进行了初步的分析和研究。结果表明 ,松辽盆地朝长地区未熟油和成熟油的混源现象较为常见 ,应用不同的成熟度指标可以识别这种情况。塔里木盆地塔中地区石炭系油藏CⅢ 油组的油气为三期油气的混源 ,油气运移的主体方向是自西向东。后期较高成熟度条件下形成的天然气、轻质油 ,自东向西进入塔中 1油田、塔中 4油田 ,塔中 4油田为双向供油更多还原

【Abstract】 Organic geochemistry can provide some useful information by analyzing composition of crude oil and source rocks extracts. Based on literature survey, the situation of oil mixing in geological environment is discussed. Two cases of Songliao basin and Tarim Basin are analyzed. The results of study show that the mixing of immature oil with mature oil in Songliao basin are very popular. Based on different maturity index, the migration direction are determined herein. Three periods of petroleum migration in C\-Ⅲ reservoir of Tarim basin are tentatively proposed by using comprehensive studies. The main migration direction of oil and gas in Tazhong region is from the west to the east.更多还原