气源岩热模拟产物轻烃在线分析技术

利用轻烃在线分析技术对高成熟烃源岩热模拟产物进行分析,结果表明,处于高演化阶段的气源岩,随模拟温度升高,生成的轻烃总量增加,其中芳烃含量增加尤为明显;对于成熟度较高的样品,轻烃成熟度参数变化不大,均为高成熟阶段的特征;母质类型参数也在原有的判识范围内有规律地变化,但苯指数不能作为高—过成熟样品母质类型判识的参数。运用提高热模拟温度以获取C₆—C₇轻烃组成特征的方法,可为研究高—过成熟烃源岩的母质类型、成熟度及油气源对比提供可靠参数。 

THE ON-LINE ANALYTICAL TECHNOLOGY OF LIGHT HYDROCARBON IN GAS SOURCE ROCK THERMAL SIMULATION RESOLVING PRODUCTS

Making use of the on-line analytical technology,the light hydrocarbons in high mature hydrocarbon source rock thermal simulation resolving products were analyzed.The result shows that the amount of generated light hydrocarbon increases with the simulation temperature rises.For the samples with high maturity,the parameters of mature degree of the light hydrocarbons have little change.Parameters indicating organic matter type have regular changes within the original scope of judge.But the benzene index can't be used as a judge parameter of organic matter type for high mature hydrocarbon source rock.By applying increasing the thermal simulation temperature to obtaining the composition characteristics of C6-C7 light hydrocarbons,the reliable parameters of organic matter type,maturity and oil/gas-source correlation of high-over mature source rock can be offered.