论文部分内容阅读
选取了红外光谱中2750～3000cm-1C—H振动峰面积作为反映干酪根中脂肪链含量的特征参数,并以完全饱和脂肪链的微晶石蜡为基准,建立了对干酪根中脂肪链含量进行测定的实验方法,同时讨论了实验条件、无机矿物、干酪根样品加入量等因素的影响。并通过对东营地区不同类型干酪根的低熟烃源岩样品进行的高压热模拟实验,研究了干酪根中脂肪链的百分含量与成熟度、沥青转化率及干酪根原素组成之间的关系。结果表明干酪根中脂肪链含量不仅与干酪根的类型有关,而且随成熟作用增加明显降低,其与热模拟生油量的关系和烃源岩的产烃率曲线相似,在脂肪链含量由15%降至5%时出现一个生油高峰。所以,脂肪链百分含量这一参数有可能成为烃源岩的判别及评价的一个新的重要指标。
The vibrational peak area of 2750 ~ 3000cm-1C-H in IR spectra was selected as the characteristic parameter to reflect the content of fat chain in kerogen. Based on the microcrystalline wax of completely saturated aliphatic chain, the content of fat chain in kerogen was established Determination of experimental methods, discussed the experimental conditions, inorganic minerals, kerogen sample amount and other factors. Through the high-pressure thermal simulation experiments on different types of kerogen source rocks in Dongying area, the relationship between the percentages of fat chain and the maturity, bitumen conversion and kerogen composition in kerogen was studied . The results showed that the content of fat chain in kerogen was not only related to the type of kerogen but also significantly decreased with increasing maturation. The relationship between kerogen and thermal simulation yield was similar to that of hydrocarbon source rock. A peak of crude oil appeared when% dropped to 5%. Therefore, the percentage of fat chain is likely to be a new important indicator for the discrimination and evaluation of source rocks.