Method for construction and completion of injection wells

The invention claims a building and well completion method of; the external method comprises the following steps of: 1) Are arranged on injecting a, the penetrable part (2) is a emergency stop material layer on the upper sleeve pipe is the wellbore can be, 3) and sleeve configured to be an extending component and through the is formed, 4) extending into member is a through the the area of the contact face, 5) of the pipeline of well completion device, and 6) of the fluid according plate needs to steam into the Well. The larger than the needs to perform the through hole and filling multilayer gravel to the well and enhanced injection well the reliability of well completion.