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通过对球三坳陷有机包裹体的初步研究,将其有机包裹体分为6种类型.其中文昌A凹陷主要是气态烃包裹体和含气态烃包裹体,文昌B凹陷则以纯液态烃和含烃三相不混溶包裹体为主.分析了油气运移的温度,计算了油气运移的深度,并推算出油气运移的主要时期.认为珠三坳陷油气大量运移的时期为晚中新世到第四纪.运用有机包裹体的色谱/质谱分析结果,判断了珠三坳陷有机包裹体中烃类的主要来源.
Based on the preliminary study of the organic inclusions in the Yusanian Depression, the organic inclusions are divided into six types, of which the Wenchang A depression is mainly composed of gaseous hydrocarbon inclusions and gaseous hydrocarbon inclusions, and the Wenchang B depression is characterized by pure liquid hydrocarbons and Hydrocarbon three-phase immiscible inclusions.The hydrocarbon migration temperature is analyzed, the depth of hydrocarbon migration is calculated, and the main period of hydrocarbon migration is deduced.The period of hydrocarbon migration in the Zhu 3 sag is considered to be late Miocene to Quaternary.Using the results of chromatographic / mass spectrometry analysis of organic inclusions, the main sources of hydrocarbons in organic inclusions in the Zhu-San depression were determined.