China's first high temperature and high pressure gas localization rate exceeds 95%

　　the main process pipeline system platform, again into the submarine gas pipeline. Main process pipeline system is composed of pipe fittings, valves and so on, the east 1-1 issue of production Wells in high temperature and high pressure, high - temperature corrosion well flow as high as 144 ℃, the mouth before the pressure up to 55 million mpa, carbon dioxide is as high as 35%, for the main process pipeline system in pipe fittings, valves, high temperature, high pressure resistance and corrosion resistance of high requirements are put forward. The high pressure rating of the valve, pipe fittings belong to high-end equipment, only a few manufacturer can produce abroad, high price, delivery time is long, and it is very important. Such as high pressure valve can breath the well mouth valve fails to prevent gas leakage, is an important barrier field safety in production.

　　We have adopted advanced production equipment and technologies to manufacture our seamless steel and oil casing, which can not only improve product quality, but also save raw materials. Our products have high strength, good toughness and resistance to corrosion.

　　Led by the early stage of the design, material selection, produced by the valve and pipe fittings forging factory, professional institutions and materials research unit to participate in the team cooperation, strengthen technological exchanges with foreign manufacturers, absorption of similar foreign valve design advantages, designed the high pressure resistance, corrosion resistance of valves and pipe fittings. Among them, the wall thickness of valve up to 60 mm, can resist the pressure of 69 million mpa. Manufacturing, with hot forming theory to guide the production process, for the complete set of applicable ultra thick wall composition control, duplex stainless steel forging parameters and heat treatment technology package, batch produced more than 80 domestic high pressure valve and thousands of high pressure pipe fittings. These valves and pipe fittings by 200 times in different temperature and pressure under the condition of product level test, on May 10 putting-in-service proactively.

　　For the submarine gas pipeline, zhanjiang branch by 12 "domestic hose instead of the original planning 12 inch. Domestic no 12 inches of large diameter hose complete sets of production equipment and mature production technology, we will research, optimization design, together with manufacturer in a metal hose connection parts wedge sealing structure, strengthen the sealing; Additional bending strengthening, smooth hose connection stiffness; Design of double insurance hose exhaust valve, exhaust reliability. Strictly the quality pass, such as curing internal pressure sealing layer, outer sheath forming process; Improve the inner frame forming equipment, tensile layer winding equipment working stability; Add on-line wall thickness monitoring equipment, real-time monitoring of wall thickness, etc. In the end, the factory has the ability to produce 12 inch hose, meet the east 1-1 issue of high temperature and high pressure gas transmission requirements. Compared the ODP original design using 12 inch pipe, domestic equipment cost saving of nearly 100 million yuan.

　　"Is not only the high pressure pipe fittings, valves, gas hose, east 1-1 issue of adjustment of development projects, we try to use domestically-manufactured equipment, create conditions to promote localization."  "development of deepwater gas field in the future, we will try to cooperate with domestic manufacturer, same gas field in the realization of the efficient development, at the same time, to provide domestic manufacturing upgrading opportunity."