The unloading cranny was distributed primarily in the east precipice and wide noumenon with large aperture and long extension as well as largest destructibility.
Compare the methods commonly used for stripping the tankcars, and propose the reasonable device for stripping tankcars and the main points of arrangement for unloading tankcar station.
The causes are presented as follows: packer unloading pressure, formation damage, oil tool plugging, formation voidage, the worst formation physical properties and the effect from vicinage wells.