Recently, exciting news came from companies such as Shanghai Baosteel Group and Wuhan Iron and Steel (Group) Company that breakthroughs have been made in the development of deep-sea pipeline pipelines, which will help our country to get rid of the dependence of such products on imports and To some extent, promote the progress of China's deep-sea oil and gas exploration. However, "China Energy News" reporter also learned in an interview that the development of the deep-sea industry alone can not be broken at one point, but needs a systematic breakthrough. China's deep-sea equipment as a whole still lags behind the developed level. Breakthrough in the development of deep-sea pipelines Reporter was informed that by the Pearl River Oil and Gas Pipe Holding Co., Ltd. and Wuhan Iron and Steel (Group) Company jointly developed the "deep-sea pipe with LSAW steel pipe" scientific and technological achievements recently passed the Guangdong Provincial Science and Technology Agency Identification. The appraisal committee composed of experts such as China Petroleum Pipe Research Institute, after inquiring and discussing, believed that this achievement filled the domestic blank and broke the monopoly of this technology abroad. The physical quality of the appraisal reached the international advanced level and was unanimously approved to pass the appraisal of scientific and technological achievements. It is understood that the production of steel specifications for the 559 × 28mm diameter, material is SMYS450 LSAW pipe, can serve in the deep sea 1,500 meters of the sea, this product is the first trial in our country and was successful. In the same way, Shanghai Baosteel Group has good news. Baosteel successfully manufactured the straight seam welded pipe of 762 × 30.2 mm in diameter and 31.8 mm in length and became the first steel enterprise in China to have the deep seabed pipeline pipe of this standard and made a strong force for the deep-sea development project in China Support It will be reported that the joint venture of Zhujiang Oil & Gas Steel Pipe Holding Co., Ltd. and Wuhan Iron and Steel (Group) Company will be used for the deep-sea pipeline LSAW steel pipe which will be used in China's first large-scale deep-sea natural gas project - the South China Sea Deepwater Natural gas project, the deep section of the pipeline will be laying at a depth of 1,500 meters, laying the laying record of China's submarine pipeline. According to the accepted standards of the international offshore oil industry, shallow water within 300 meters and deep water over 300 meters exceed ultra-deep water when it exceeds 1,500 meters. According to reports, laying deep in 1500, the pipe has very demanding requirements. The application practice from the field of oil and gas field shows that in the deepwater oil and gas pipelines, the problems caused by the multi-phase flow itself (water, acid substances, etc.), the fluctuation of the seabed, operation and operation, , Hydrates, corrosion, erosion of solid particles, etc., have seriously threatened the normal production and the safe operation of the seabed gathering and transportation system. As a result, frequent accidents have occurred. Therefore, compared with land-based pipes and marine pipes in low-temperature, high-pressure and highly corrosive working environments, the strength, toughness, compressive strength and dimensional accuracy of pipeline pipes all have strict requirements. Baosteel disclosed that the straight seam welded pipes with diameters of 762 × 30.2mm and 31.8mm are designed for deep-sea natural gas development projects. Because of their difficulty in manufacture, they are a great test on equipment capacity and raw material quality. Previously, China only relied on imports . Allegedly, in November last year, CNOOC Nanhai deepwater gas development project preparatory team to Baosteel issued a trial of this project submarine pipeline with the letter of inquiry. Through a comprehensive evaluation and analysis, Baosteel decided to trial the specifications of welded pipe. To this end, Baosteel set up a team of technical research, starting from the composition of steelmaking, thick plate production process and UOE pipe forming, welding, expanding diameter process design to overcome the high purity steelmaking, slab quality control difficult And other challenges, to ensure the quality of trial pipe products. Sham Shuiying equipment needs a systematic breakthrough May 19-21, 2010 World Offshore Oil and Gas Exploration and Development Conference and Exhibition, deputy chief economist at CNOOC Zhang Ping said the maximum depth of 2192 meters of foreign oilfields, 333 meters in China; Foreign pipe laying maximum depth of 2202 meters, 150 meters for our country, the gap is quite obvious. At present, China can only independently develop oil and gas at a depth of 300 meters. There is almost no development in the deep-sea and ultra-deep-sea. The main reason is that the manufacturing capacity of key technologies and equipment for offshore oil and gas resources development can not keep up. In some core equipment, due to non-compliance of special steel produced by domestic enterprises, they have to rely on imports. Some experts told reporters, compared to deepwater drilling platform, the deep-water pipe by more attention is not enough. It is understood that there are dozens of enterprises producing spiral welded pipe in our country, but there are not many enterprises capable of producing pipeline pipe (petroleum and natural gas pipelines). At the same time, small-caliber pipe capacity surplus, a large proportion of low-grade pipe, the production of high value-added welded pipe required high-quality hot coil and heavy plate technology is still lacking. Yan Zesheng, chairman of China Steel Structure Association Steel Pipe Branch, said that China has become the world's steel power and is entering the ranks of the world's steel powerhouses, but in some high-end products and foreign strongman there is a certain gap. Such as corrosion-resistant oil well pipe series G3, 22Gr, 28Gr stainless steel, 13Gr, Sup13Gr; flexible casing, tubing, deep sea pipe around the pipe, etc., most of the current need to be imported from abroad. The insiders believe that the development of the deep-sea industry will not break through at one point and will require systematic breakthroughs. Relevant government departments should consider all aspects of the national strategic level, mobilize various forces, and give financial support and policies.