After the pre-reaming is complete, hole opener drilling you can drag the finished drill pipe. Pipe prefabrication should be done on the side opposite the rig. Reaming drill connect the other end to end through the rotary joint on the finished pipe. Finished pipe along the rotary joint to avoid rotating reamer to ensure its smooth drag drilling. Pullback completed by the drilling rig, the process also requires a lot of mud with Platform Drilling Robots dragging back reaming process should be continued until the finished product pipeline and emerged from the side of the rig.