Open hole horizontal well cement packing segmented water control and sand prevention well completion pipe string and open hole horizontal well cement packing segmented water control and sand prevention well completion method

The open hole horizontal well cement packing segmented water control and sand prevention well completion pipe column comprises an outer pipe column body and an inner pipe column body, and the outer pipe column body is sequentially provided with a sleeve, a cementing device, a sand filtering pipe, an outer pipe packer, a blind pipe, an outer pipe packer, a sand filtering pipe and a well washing valve from top to bottom. The inner pipe column is sequentially provided with a first packer, a cementing outer blind pipe, a second packer, a cementing outer blind pipe, an upper switch, a first protection packer, a lower switch, a second protection packer and a screwed plug from top to bottom. The double-pipe structure is adopted, the pipe column is provided with the cement injection port and the cement return port, circulating injection of cement paste is achieved, and the cement well cementation quality is improved; and after the cementing construction is finished, the inner injection port and the cementing liquid r