The invention discloses a process pipe column. The process pipe column comprises a sand prevention pipe column and a filling service pipe column. A reverse packer is installed at the bottom of the sand prevention pipe column and corresponds to a packer at the upper portion of the sand prevention pipe column, pressure balance is achieved in the high-pressure extrusion process, the sand prevention pipe column is prevented from displacing under the effect of high-pressure sand-carrying fluid, cooperation of a bottom filling tool and a filling server is guaranteed, gravel in a horizontal well pipe is effectively extruded for filling sand prevention work, sand prevention well completion is smoothly achieved, and an oil-gas field is efficiently developed. According to the process pipe column, a reservoir can be fractured, wide and short cracks can be formed in a near well-bore zone, the seepage capacity of the reservoir is greatly improved, the yield increase effect is achieved, the sand blocking radius is expanded to the reservoir, the sand prevention effect is better, and the sand prevention efficiency period is longer.