黄县盆地古近纪煤中琥珀树脂体生烃特征研究

Study on Hydrocarbon Generation Features of Kochenite in Paleogene Coal of Huangxian Basin

为揭示山东黄县盆地煤中琥珀树脂体的生烃特征、生烃潜力,讨论其生烃意义,应用荧光光度试验、开放体系下热模拟试验等方法对该区腐殖煤中琥珀树脂体的荧光特性、热解生烃特征进行了研究。结果表明:该区琥珀树脂体生烃能力极强,在模拟温度为320℃时,氯仿抽提物与原样质量之比高达0.851,远高于类脂组的其他显微组分;生排烃较早,镜质体反射率Ro<0.5%,已有相当量的烃类物质产生,Ro=0.71%处荧光由正到负变化;生烃带较宽,当模拟温度大于450℃、Ro>2.8%时,每克原样中总烃量仍可达到0.4 g。

In order to reveal the hydrocarbon features and hydrocarbon generation potential of the kochenite in coal of Shandong Huangx- Jan Basin, the paper discussed the significances of the hydrocarbon generation. The fluorophotometry experiment, thermal simulation ex- periment under an open system and other method were applied to the study on the fluorescence characteristics and pyrogenation hydrocar- bon generation features of the kochenite in the humic coal of the area, the results showed that the koehenite in the area had a high hydro- carbon generation capacity. When the simulated temperature was at 320 ~C, the mass ratio of the extraction and raw sample could reach to 0. 851 and was higher than other maceral of the liptinite. When the hydrocarbon generation and expulsion was early and the vitrinite re- flectance Ro was 〈0. 5% , certain hydrocarbon were generated. When Ro = 0. 71% , the fluorescence was varied from positive to negative and the hydrocarbon generation zone would be wide. When the simulation temperature was over 450 ℃ and Ro〉 2. 8% , the total hydro- carbon value in each gram sample could reach to 0. 4 g.