On September 23, 2021, with the start of construction of the Zhongwei Second Station of the Middle Section (Zhongwei-Jian) Natural Gas Pipeline of the Third West-East Gas Pipeline, the construction of the Middle Section (Zhongwei-Jian) Natural Gas Pipeline Project of the Third West-East Gas Pipeline was officially started.

Fuze Central and Eastern Region

The mid-section (Zhongwei-Jian) natural gas pipeline of the Third West-East Gas Pipeline has a total length of 2090 kilometers. It starts from Zhongwei, Ningxia, and passes through 7 provinces (autonomous regions) of Ningxia, Gansu, Shaanxi, Henan, Hubei, Hunan, and Jiangxi, ending in Ji’an, Jiangxi Province. The pipeline design pressure is 10 MPa, the designed annual gas transmission capacity is 25 billion cubic meters, and the pipe diameter is 1219 mm. A total of 10 compressor stations and 2 branch lines are set up across the line.

After the pipeline is completed and put into operation, it will connect the western section (Khorgos-Zhongwei) and the eastern section (Jian-Fuzhou) of the completed West-East Natural Gas Pipeline, so as to realize the effective connection between the western resources and the eastern natural gas market, and further improve the central and eastern regions of China The layout of the natural gas pipeline network is interconnected with the existing regional gas transmission pipeline network and the national backbone natural gas pipeline network, unblocking the dual circulation channels of domestic and foreign resource supply, improving the flexibility of natural gas allocation and supply, and improving the energy supply, economic development and environment of the areas along the route. Provide important guarantees to help build a new pattern of "five verticals and five horizontals" for natural gas pipeline networks during the "14th Five-Year Plan" period.

The Zhongwei No. 2 Station, which started construction this time, serves as a backup station for the Zhongwei Hub Station of the West-East Gas Pipeline Line 1 and Line 2. It is interconnected with multiple natural gas pipelines such as the Zhonggui Line to realize the deployment function of multiple points in and multiple points out, which can greatly improve the operational reliability of the West-East Gas Pipeline System.

Boost low-carbon transformation

In the process of design and construction, the middle section of the West-East Gas Pipeline III promoted the autonomy of domestic oil and gas pipeline equipment through digital design, standardized construction, and intelligent construction, leading the innovation and development of pipeline technology, driving the development of domestic machinery, equipment and other related industries, and promoting the industry Structural upgrade and optimization. The construction of the main body of the project construction line adopts new technologies and technologies such as fully automated welding, mechanized anti-corrosion patching, and automatic digital ultrasonic testing to create a "end + cloud + big data" pipeline network intelligent construction site construction platform; actively promote the creation, research and development of new technologies Achievement transformation, through the application of "double pipes" and the pilot implementation of 18-meter extension pipes to reduce the number of welds, save project investment, and improve engineering efficiency and quality.

After the completion of the middle section of the third West-East Gas Pipeline, the annual gas transmission capacity of the West-East Gas Pipeline System can be increased by about 25 billion cubic meters. Compared with coal, the annual carbon dioxide emissions can be reduced by 70.89 million tons. It is of great significance to promote the adjustment of energy structure and the transformation of development mode, ensure the supply of clean energy in the areas along the route, promote energy conservation and emission reduction along the route, and achieve the goal of carbon peak and carbon neutrality.

Empower management upgrade

The middle section of the third West-East Gas Pipeline project passes through the Loess Plateau, Qinling Mountains, Jiangnan hills and other complex mountainous and disastrous geological and geomorphological sections. The design and implementation of 75 mountain tunnels, 1 mountain directional drilling, and 35 large and medium-sized rivers across 35 large and medium-sized rivers, the construction environment is complex and difficult The coefficient is larger. From a political perspective and an overall perspective, the National Pipeline Network Group has focused on construction goals, technological innovation, quality and safety, environmental protection, standardization system construction, and smart pipe network promotion and application, and put forward higher and updated requirements for project construction.

In order to promote the smooth start of the project and earnestly implement the management concept of integration of construction and management, the National Pipeline Network Group reorganized the engineering construction team from Sanwan as the assembly number, took the special rectification of safety production as a breakthrough, and took the construction of a system and strong implementation as the curse, and comprehensively implemented management standardization. , Behavior standardization, machine tool standardization, environmental standardization, intelligent construction site construction and innovation lead the four modernizations, one wisdom and one creation management measures, and make every effort to build the middle section of the third West-East Gas Pipeline into a safe pipeline, a green pipeline, a development pipeline, and a friendship pipeline.

The West-East Gas Pipeline III natural gas pipeline project is another national-level key project that is related to the national economy and people’s livelihood and is of great political, economic, social and environmental significance. The gas source is Clean energy in Central Asian countries and western my country can connect to the national backbone natural gas pipeline network and promote the natural gas market to spread to the Yangtze River Delta, Pearl River Delta, Bohai Rim and Sichuan-Chongqing regions, benefiting hundreds of millions of people. The project was approved and constructed in phases according to the three parts of the western section, the middle section and the eastern section. The western section (Khorgos-Zhongwei) was completed and put into production on August 25, 2014, and the eastern section (Jian-Fuzhou) was completed in December 2016. The ventilation was completed on the 12th. Editor/He Yuting