【摘要】 油气藏成藏时期的确定是进行油气藏勘探与评价的重要工作内容之一 ,也是揭示成藏过程的有效途径。利用伊利石测年确定油气成藏期 ,能够得出其绝对年龄 ,因而受到人们重视。运用自生伊利石同位素年龄测定的原理和方法及自生伊利石同位素年龄资料对焉耆盆地博湖坳陷油气藏成藏时期及油气运移时期进行了分析 ,最后对自生伊利石同位素测年存在的问题和措施进行了有益的探讨并克服了以往只能根据地质综合研究定性确定油气藏成藏时期及油气运移时期问题 ,为定量确定油气藏成藏时期以及油气运移时期提供了科学的方法。更多还原

【Abstract】 Determination of the timing of oil/gas entrapment is an important content in guiding oil and gas exploration and evaluation and it is also a good way for revealing the process of oil-pool-formation.Since the technique of age measurement by using illite can yield absolute age,it has received a great attention.The principle and method of the technique are introduced in this article and the timing of oil/gas entrapment and migration is analyzed by using the isotope data of autogenetic illite in Bohu depression of Yianqi Basin and the problem existed in the technique was discussed.This method is superior to the timing method conducted according to geologic synthetic research.Therefore it provided an effective way for quantitativelly determ the timing of oil/gas entrapment and migration.更多还原