The first domestic ship, the Shanghai Shipyard completed the R&D and design of the fracturing ship

This integrated fracturing ship, which is highly integrated, automated, digital and intelligent, and whose overall performance has reached the world's advanced level, will be built by Wuhu Shipyard Co., Ltd. The ship has a total length of 99.9 meters, a molded width of 22 meters, and a molded depth of 9.9 meters. After completion, it will meet the new needs of large-scale fracturing operations in my country's entire sea area, offshore multi-well batch fracturing operations, as well as gas wells and ultra-deep fracturing operations. , filling the gaps in my country's offshore oilfield fracturing technology and engineering fields, has important strategic significance.

Fracking ships are relatively unfamiliar to people. This type of ship is mainly used to exploit potential reserves in offshore low-permeability oil and gas fields to achieve the purpose of stabilizing and increasing production. After drilling is completed, high-pressure acid liquid (acid fracturing) or sand-containing fluid (sand fracturing) is injected into the wellbore, causing the bottom hole pressure to exceed the formation fracture pressure, and a series of gaps are artificially created in the reservoir within a certain range of the wellbore. , so that the oil and gas in the reservoir can flow into the wellbore through these gaps and be produced from the surface. The fracturing cracks have a certain width, and the resistance when oil and gas flow through them is very small, which is equivalent to a "highway" in the reservoir. If there are no artificial fractures, the fluid at the far end of the wellbore must overcome the heavy resistance of the formation during the seepage process before entering the wellbore. The path is long and difficult. Some wells do not have enough energy to overcome this resistance and will not be productive without fracturing. Therefore, generally speaking, a fracturing ship is a professional player with excellent fracturing capabilities. It can maneuver and flexibly drive to the target platform to perform fracturing operations, maximizing the well-controlled reserves, cumulative production and overall recovery rate of a single well. . For platforms with limited deck area (especially unmanned platforms), large-scale fracturing operations are no longer difficult with the fracturing ship.

Offshore low-permeability oil and gas field reserves are an important source of potential reserves for my country's offshore oil production. For a long time, offshore oilfield fracturing technology has been monopolized by a few European and American countries, and my country has been strictly blocked. Due to the lack of professional technology and equipment, it can only be far behind. In order to solve this "stuck neck" problem, the Shanghai Shipyard took the initiative to assume the responsibilities and mission of a central enterprise, give full play to the rich experience and R&D strength accumulated in the field of marine engineering, and start from scratch.Despite the difficulties, self-reliance and hard work, we finally successfully developed the world's largest and China's first offshore oil field fracturing ship, making another contribution to the innovation and improvement of the ship pedigree made in China.

The fracturing ship has many highlights

It has strong fracturing operation capabilities and a high degree of integration. In response to the special needs of offshore fracturing operations, in addition to professional fracturing equipment, the ship is also equipped with liquid supply equipment, mixing equipment, sand mixing equipment, sand storage and sand transportation equipment, other material storage and supply equipment, etc., to increase production in all oil fields All professional equipment for operations are arranged in the cabin (inside the main hull), which can effectively reduce the impact of sea conditions. Its key fracturing equipment capabilities are among the best in the world.

Safe and reliable. The ship adopts an integrated power station design, that is, the fracturing equipment and the ship’s electricity are highly integrated. The power distribution board of the integrated power station is divided into five sections of busbars. When the maximum single point failure occurs, the ship power station can ensure that four fracturing pumps, one sand mixing device and one mixing device work at full capacity, effectively ensuring the safe conduct of fracturing operations. . Moreover, fracturing operations can be carried out under the environmental conditions of level 7 wind, significant wave height of 3 meters, and 1.5 throttle, and safe navigation can be carried out under the environmental conditions of level 8 sea state and force 10 wind.

Excellent propulsion performance. The ship adopts a forward-looking all-electric propulsion form, equipped with two electric propulsion azimuth thrusters, one telescopic thruster and two bow thrusters. Its dynamic positioning capability reaches DP level 2, and its speed can reach more than 13 knots. The ship can also perform operations such as turning on the spot and moving laterally within a smaller radius, and has excellent maneuverability and maneuverability.

Green and environmentally friendly. The ship adopts an electric propulsion Closed Ring busbar design. During the ship's DP operation, the number of on-grid units can be adjusted according to the load of the entire ship's power grid, thereby increasing the load rate of the on-grid engine units and greatly reducing fuel consumption and emissions. The ship's generator set has no light load conditions and can always operate at full load, and the efficiency of the diesel engine is maintained At the optimal operating point, it effectively reduces diesel consumption, reduces pollutant emissions, and is green and friendly. The ship is also equipped with a domestic sewage treatment device that meets the latest MEPC regulations of the International Maritime Organization (IMO) and meets emission control requirements.

It is intelligent and highly automated. The ship is equipped with an intelligent service cloud platform and is highly integrated with the ship's intelligent system platform. It has intelligent engine room, intelligent navigation and intelligent integration platform functions, realizing digital operation of equipment and intelligent operation of the ship, making the ship more economical, safe and efficient. The configuration of the ship’s electrical systemA fracturing system command center and corresponding professional control software have been set up to realize the monitoring and control functions of oilfield stimulation equipment and other supporting equipment. It can also realize automatic pressure adjustment, automatic displacement distribution, and automatic health detection, effectively improving The operating efficiency of the entire system.

As one of the research and design units with the largest scale, the most diverse ship types and the highest market share in the field of ship design in my country, the Shanghai Shipyard has always implemented the strategy of ensuring national energy security and is committed to serving our country. In the fields of offshore oil field exploration, production, and transportation, we have independently developed and designed my country's first oilfield production support operation support ship "Hai Yang Shiyou 640", the world's largest liquefied natural gas (LNG) transportation and bunkering ship "Hai Yang Shiyou 301", and my country's The largest deep-water comprehensive survey ship "Hai Yang Shiyou 701", my country's first deep-water environmental protection work ship "Hai Yang Shiyou 257" and many other high-end offshore key equipment are innovation leaders in the field of offshore engineering equipment research and development in my country.