Abstract: Due to the unique constraints of the offshore environment, there exist many challenges, including limited construction space, high investment costs, and demanding production requirements, which pose significant obstacles to large-scale offshore fracturing. Large fracturing vessels and supporting technologies can effectively enhance the productivity of low-quality reservoirs, and standardized and batch-operating models enable intensive industrial advantages, which can reduce operational costs, achieve cost-efficient offshore fracturing development characterized by "fewer wells with higher production". However, the corresponding fracturing operation modes and associated technical systems still need further research. Based on the fact that the large-scale fracturing vessel can meet the demands of large-scale and batch offshore fracturing operations in the future, four development directions of fracturing vessels are prospected. By systematically sorting out the main offshore operation facilities, a solution for the connection of fracturing tubing strings and corresponding wellheads based on four modes is proposed, namely "oil production platform + modular drilling rig or drilling ship, unmanned platform + drilling ship or workover ship, exploration well fracturing by using drilling ship and fracturing during jacket period". These solutions provide technical reference for the large-scale continuous operation of fracturing ships.

Key words: large-scale fracturing vessel, large-scale fracturing, different fracturing modes, the operation modes of different offshore facilities