China’s first integrated large-scale fracturing vessel, Haiyang Shiyou 696, was recently launched, entering a new stage of system commissioning.
At 99.8 meters long, 22 meters wide, and 9.9 meters deep, this vessel boasts advanced cutting-edge fracturing systems with liquid supply, blending and sand mixing units. Its high integration, intelligence, displacement, power, storage, and safety features ensure optimal efficiency for offshore fracturing operations. Notably, this pioneering vessel is the first of its kind to emerge from China.
Construction of the shipbuilding slipway began in November 2024. China National Offshore Oil Corporation’s Tianjin Branch closely coordinated all stages — from module assembly to equipment installation — to ensure smooth progress.
To overcome technical challenges, the project team launched dedicated R&D initiatives, inviting shipbuilding and fracturing experts to participate in the vessel’s design. Two highly skilled technical supervision teams were stationed at the shipyard to oversee construction quality.
Among the project’s most complex tasks was the installation of the retractable thruster system, which required extreme precision in fitting stainless steel underwater sliding tracks. Using 3D modeling and precision measurements, the team ensured accurate installation and long-term system stability.
Another challenge was the installation and welding of the rudder propeller base, which required tight control over deformation and alignment. The design required a 3-degree forward tilt of the shaft centerline to enhance propulsion and maneuverability. The team completed the work with surface angles and roughness exceeding industry standards.
Following its launch, the vessel will undergo a series of mooring tests and system integration trials under simulated high-load conditions.
(Executive editor: Wang Ruoting)
