碎屑岩储层中有机包裹体的形成机制研究

有机包裹全的形成与一般无机包裹体的形成可有较大区别，它除了可在矿物结晶过程中形成（象无机包裹体）外，更重要的成因是它可在与岩石相互作用过程中形成，笔者着重对这种新的形成机制进行了分析研究，经研究表明，赋存于碎屑岩储层中石英裂隙，加大边及粒间包裹体，是由于油气（特别是羧酸）溶解了石英及铝硅酸，碳酸盐形成一定空间后，油气充填其中再封闭而成的，这是油一岩反应的结果，不同赋存状态的有机包裹体实际上是同一过

STUDY ON THE MECHANISM OF ORGANIC INCLUSION IN THE FRAGMENTAL RESERVOIR

The mechanism of organic inclusions may be quite different from that of inorganic inclusions,the organic inclusions may be mainly formed from the process of oil-rock interaction. A study on the new mechanism,this paper shows that the inclusions within the cracks,secondary enlargement edges of quartz and between minerals in the fragmental resevoirs are the result of oil-rock interaction. They are formed when oil and gas, especially the carboxylic acid anions in them dissolve quartz,aluminosilicate and carbonate and form a certain space in which oil and gas infill.Inclusions in different occurrences are actually the different forms of the same process that takes place in the different structures of a rock.Our study is significant to the reservoir geochemistry,the mechanism of fluid inclusion and application of organic inclusions in exploration and evaluation of oil and gas resource.