Fluid in the paleo-karst filler of the Paleozoic group is abundant in Chengdao oilfield.The properties and shapes of the fluid inclusion trapped in different karat processes are different distinctly.

• 埕岛下古生界古岩溶充填物中流体包裹体非常丰富，不同的岩溶过程中捕获的包裹体的性质和形态有很大差别。