荧光法判别镜质体类型的研究

镜质组生油中的重要问题之一是如何有效地鉴别富氢镜质体与贫氢镜质体。通过原煤和镜质组样品热模拟液态烃产率与相对荧光强度的相关关系找出与达到生成、排出液态烃产率的要求值相对应的相对荧光强度界限值,并经热解分析的产油指数校验后,作为划分富氢与贫氢镜质体的定量界线和评价腐植煤生烃排烃潜力的另一个煤岩学定量标志。在一定的荧光测试条件下,华北太原组和山西组煤的富氢与贫氢镜质体相对荧光强度的界限值定为I_546nm0.30%;I_650nm0.46%。 

TO TRY TO DISTINGUISH THE TYPES OF VITRINITE BY USING FLUORESENT METHOD

One of important problems about oil-generation of vitrinite is how to distinguish and separate the hydrogen-rich and hydrogen-poor vitrinite effectively. Base on the linear relation of oil-yield of vitrinite and coal obtained in thermal simutation test with relative fluoresent intensity, we seed bounds value of reatives fluoresent intensity(I546nm,I650nm) corresponded to the oil -yield which vitrinite starts to generate and expulse oil.After they are examined and corrected by oil-generating potential (S1 S2)obtained in pyrolysis test,the bounds value of I546nm and I650nm are regard as quantitative boundary to divide hydrogen-rich and hydrogen-poor vitrinite,and as one of the quantitative mark to evaluat hydrocarbon-generating potenial of vitrinite and humic coal.The results shaw 0.3%(I546nm)and 0.46%(I650nm)obrained in established measure condition are regard as bounds value of relative flouresent intensity to spearated hydrogen-poor and hydrogen-rich vitrinite of coal in Taiya and Shanxi Formation in teh studied area.The results remain to be discassed together and to be examined and corrected.