毛管压力是油气运移的动力吗?——与李明诚教授商榷

Is capillary pressure the driving force in oil and gas migration? — Discussion with Prof. Li Mingcheng

对油气运移过程中的毛管压力作用机理深入研究后认为,毛管压力不是油气初次运移的动力,也不是二次运移的动力,在油气运移过程中基本上不起作用,而仅仅在初次运移向二次运移转换时起到一定的助推作用;毛管压力不是油气初次运移的阻力,也不是二次运移的阻力,而是在二次运移向三次运移转换时起到一定的阻力(封堵)作用,该封堵作用对油气成藏意义重大。

A study was conducted on the drive mechanism of capillary pressure in oil and gas migration. The result shows that capillary pressure is neither the driving force of the primary migration of oil and gas, nor the driving force of secondary migration of oil and gas. Capillary pressure plays little role in oil and gas migration, it only put a certain assistance to the migration at the transfer stage of primary migration to secondary migration. Capillary pressure is not the resistance of primary migration and secondary migration of oil and gas. However, capillary pressure takes a little part of sealing at the transfer stage of secondary migration to tertiary migration, which is very important to the forming of reservoirs.