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本文根据干酪根元素、热重、扫描电镜、热谱、红外光谱、顺磁共振等项目的分析研究认为,苏北东台坳陷下第三系主要生油岩阜二段和阜四段的母质类型是Ⅱ型;泰州组、戴南组、阜一、三段是次要生油岩,母质类型多属Ⅲ型或Ⅱ、Ⅲ型兼有。通过方法比较指出,干酪根元素分析是确定母质类型的主要指标,其划分母质类型界限清楚,有普遍使用意义。本文还用实验模拟、热重、热谱等方法测定了干酪根的生油潜量,并与蒂索确定的生油潜量进行了比较研究。认为实验模拟和热重分析数值近似,资料可信度较高,但模拟法较为复杂,而热重法简便实用。测试结果,Ⅱ型干酪根的生油潜量为0.3克_碳/克_(有机碳),Ⅲ型.为0.1克_碳/克_(有机碳)。
Based on the analysis of kerogen, thermogravimetry, scanning electron microscopy, thermal spectroscopy, infrared spectroscopy, paramagnetic resonance and other projects, it is considered that the parent material of Fu2 Member and Fu4 Member of the tertiary source rocks in the Lower Tertiary in Dongtai Depression, Type is Type II; Taizhou Formation, Dainan Formation, Fu 1, 3 is a secondary source rock, parent genus mostly Ⅲ or Ⅱ, Ⅲ both. By comparing the methods, it is pointed out that kerogen elemental analysis is the main index for determining the type of parent material, and the definition of parent material type is clear and has universal significance. In this paper, the kerogen potential of kerogen was also determined by experimental simulation, thermogravimetry and thermo-gravimetry, and the potential of oil generation determined by Tisso was compared. It is considered that the experimental simulation and thermogravimetric analysis are close to numerical values, and the data reliability is high, but the simulation method is more complicated, while the thermogravimetric method is simple and practical. According to the test results, the kerogen potential of Type II kerogen is 0.3 g C g -1 organic carbon and 0.1 g C g -1 organic carbon.