PVT筒里的奇特现象

通过PVT筒进行油气体系的相态特征研究时,微观上出现了一些奇特现象。原油脱气时气体并不是以分子的形式穿过油气界面进入气相的,而是以气泡的形式从筒底游离进入气相的。气体脱油时,油并不是以分子的形式穿过油气界面进入液相的,而是以油露的形式从筒顶游离进入液相的。油气体系的这些微观相态特征,与油气的溶解能力有关,还与筒壁表面的粗糙度有关。因油气体系表皮的存在而出现的这些微观相态特征,称作流体的表皮效应。

The Strange Phase Phenomena in PVT Cells

Some strange phase phenomena were observed in PVT cells on the micro-scale. The degassing process of oil shows that gas gets into gas phase in bubbles other than the molecules. And the bubbles evolve at the bottom of cells. The de-oiling process of gas shows that oil gets into oil phase in dews other than the molecules. And the dews evolve at the top of cells. All the phenomena are related to solution capability of oil and gas with each other, and also to the roughness of cell surface. The micro strange phase phenomena of oil and gas due to existence of skin are called the skin effect of fluids.