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Pipeline and Storage Tank

As the world leader in construction of onshore long-distance oil and gas pipelines, CNPC has years of proven expertise and experience in pipeline construction in complex conditions such as mountainous areas, deserts, plateaus, swamps, water courses and collapsible loess. With regard to long-distance pipeline construction, we have mastered an entire set of design and construction technologies for pipelines featuring large diameter (Φ914-Φ1219mm), high pressure, high grade steel (X70, X80, and X90), and thick wall (14.5-33mm).

We also possess the design technology for the orderly transmission of refined products as well as design and laying technologies for shallow-water pipelines. We are capable of designing and building 150,000m3 oil tanks and 10,000m3 spherical tanks, with an annual construction capacity of 26 million cubic meter for oil tanks and 16 million cubic meters for refined products. In addition, we can design and build natural gas liquefaction plants and LNG terminals, as well as cryogenic LNG tanks with per unit capacity of 200,000 cubic meters.

We are equipped with the state-of-the-art TDW2400 in-service plugging system to handle tapping under the pressure up to 15 MPa with a tap diameter up to 1.5 meters. We have undertaken the design and construction of large domestic projects such as the West-East Gas Pipelines, Shaanxi-Beijing Pipelines, Zhongxian-Wuhan Pipeline and the Western Pipeline, and overseas projects such as outbound oil and gas pipelines in Block 1/2/4, Block 3/7, Block 6 of Sudan, East-West Gas Pipeline in India, and Aldan-Tynda Section of the Far-East Crude Pipeline in Russia, as well as cross-border pipelines including Central Asia-China Gas Pipeline, Russia-China Crude Pipeline and Myanmar-China Oil & Gas Pipeline. The crossing/aerial crossing projects for the Nile, Yangtze and Yellow rivers were successfully completed using technologies such as semi-automatic welding, all-position automatic welding and all-position internal welding together with shielding, pipe jacking and directional drilling.

Second Russia-China Crude Pipeline

The Second Russia-China Crude Pipeline runs from Mohe in Heilongjiang Province through Inner Mongolia to Linyuan in Daqing. Running parallel to the First Russia-China Crude Pipeline, designed pressure of 9.5-11.5MPa, and an annual transmission capacity of 15 million tons. Construction of the pipeline commenced on July 20, 2016 and became commercially operational on January 1, 2018.

Eastern Russia-China Natural Gas Pipeline

The Eastern Russia-China Natural Gas Pipeline includes the section in Russia, often referred to as Power of Siberia gas pipeline, the cross border section and the section in China. The gas is mainly supplied from the Kovyktinskoye Gas Field in Irkutsk Oblast and the Chayandinskoye Gas Field in Sakha Republic (Yakutia) in East Siberia, Russia. The Chinese section of the Eastern Russia-China Natural Gas Pipeline with the largest diameter and the highest pressure currently in the country, starts from Heihe city, Heilongjiang Province in the north and winds its way to Shanghai municipality in the south. As planned, it will be constructed and put into operation in three subsections. The north subsection (Heihe-Changling) was put into operation on December 2, 2019, and the middle subsection (Changling-Yongqing) and the south subsection (Yongqing-Shanghai) are scheduled to come on stream in 2020 and 2023 respectively.

To build China's first long-distance gas pipeline of 1,422mm in diameter, the company initiated research on applicable technologies of X80 steel pipes of 1,422mm in diameter. It took three years to overcome difficulties in pipe manufacturing, fracture control, welding and construction equipment development.

This pipeline is the company's first pilot program on intelligent pipeline systems. The project integrates a real-time data acquisition and transmission system, intelligent site monitoring system, a lifecycle project management system, crew and project management platforms to enable standardized design, intelligent detection, IT-aided management and digital handover along the entire pipeline, which has promoted a shift from digital to intelligent pipeline construction for the company.

The pipeline is also a green project in China. Construction and operation of the Chinese section faced remarkable challenges from the complex geological and topographical conditions, including permafrost, rivers, forests, and natural reserves. During initial pipeline design, the company took into full consideration the potential environmental impacts, and took tailor-made measures for different regions with regards to water protection, forest-fire prevention or layered backfill, in order to minimize the environmental footprints. In particular, culvert and shield crossing techniques and measures were applied in environmentally-sensitive areas such as rivers, lakes, forests, roads and bridges.

Third West-East Gas Pipeline

The pipeline has a total length of 5,777 kilometers, including one trunk, one major branch, three branches and one connecting line. It starts at Horgosin the Xinjiang Uygur Autonomous Region and ends at Fuzhou in Fujian Province. The 5,278 km-long trunk has a pipe diameter of 1,016-1,219mm,designed pressure of 10-12MPa and an annual transmission capacity of 30 billion cubic meters. It was constructed and put into operation on asection-by-section (eastern, middle and western sections) basis.

The western section runs from Horgos to Zhongwei in the Ningxia Hui Autonomous Region, with a total length of 2,445 kilometers. Construction of this section began in October 2012, and was completed on August 25,2014. The eastern section runs from Ji'an in Jiangxi Province to Fuzhou in Fujian Province, with a total length of 817 kilometers. Construction of this section commenced in August 2013 and the section became operational on December 12, 2016. Construction of the Zhongwei-Jingbian connecting line began on May 21, 2016, and was put into operation in 2017.

Central Asia-China Gas Pipeline (Line A, B & C)

The Central Asia-China Gas Pipeline starts at Turkmen-Uzbek border city Gedaim and runs through central Uzbekistan and southern Kazakhstan before reaching Horgos in China's Xinjiang Uygur Autonomous region. Currently the Gas Pipeline has three lines, Line A, Line B and Line C in parallel, each running for 1,830 kilometers. With pipe diameter of 1,067mm (LineA and Line B) and 1,279 mm (Line C)Line A, Line B and Line C became operational in 2009, 2010, and 2014 respectively.