煤岩二次生烃模拟中生烃潜量损耗量研究

AN APPROACH TO ESTIMATION OF THE POTENTIAL LOSS OF SECONDARY HYDROCARBON GENERATION FROM THE CARBONIFEROUS-PERMIAN COAL DURING SIMULATION EXPERIMENTS

渤海湾盆地济阳—临清地区石炭—二叠系煤岩二次生烃模拟实验表明,煤生烃潜量损耗量与生排烃总量的差值不一致,这很可能是煤可降解物中不稳定的非烃、沥青占很大比例,在演化过程中非烃沥青质的相当部分转化成了不溶有机质或其它非烃组分,从而造成了排出烃与生烃潜量损耗量之间的差值。因此,在资源量估算时,就必须修正以往把煤生烃潜量的损耗量视为生排烃量的认识。

Why there would always be inconstancy between the loss of hydrocarbon generation potential and the D-values derived from the total hydrocarbon generation and expulsion from coal？ A series of simulation experiments on secondary hydrocarbon generation from the Carboniferous-Permian coals may give the answer. It is probably caused by the great proportion of unstable non-hydrocarbons and asphaltine in degradable substances, the considerable part of which was transformed into insoluble organic matters or other non-hydrocarbons during evolution, resulting in D-values between expelled hydrocarbons and loss in hydrocarbon generation potential. Thus the current conception to account the loss in hydrocarbon generation potential as the value of hydrocarbon generation and expulsion should be corrected, while making resources evaluation.