A method for improving and shale gas well recovery system

The present invention relates to a method and system for improved recovery of shale gas well, the method comprising laying line; CO2 high pressure into the well on a horizontal line, the high pressure air detonation, a series of high pressure air pulsation vibration, hit through the hollow wall and a horizontal wall, are formed in the beginning of the page seam formation; liquid CO2 is then, again beginning on page gap position rock formations is heated by incipient seam line position is pressed into the shale, a liquid CO2 phase change rapidly vaporization, high pressure air pulses produce a series of shock, in the beginning of the seam for re-crack shale; of the horizontal well through a plurality of dividing line is divided into multiple segments, each segment corresponding to the line segment shale segment made using the method seam. In this method, CO2 disguised way to effectively improve the degree of cracking shale, shale gas wells and to improve oil recovery.