Research status and development trend of traction robot of coiled tubing

Abstract Coiled tubing (CT) is prone to buckling and locking due axial friction when extending in large displacement directional wells horizontal wells. The traction robot of CT can provide traction, which fundamentally address the problem difficult downward entry CT. operation principle, size, force, speed other technical indicators existing more cutting-edge types robots are analyzed, critical structural features summarized. application prospect drilling bridge plug technology put forward. main points research on summarized a concise reference for future development direction.