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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 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, Kazakhstan-China Crude Pipeline, East-West Gas Pipeline in India, and Aldan-Tynda Section of the Far-East Crude Pipeline in Russia. 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.

First West-East Gas Pipeline

The First West-East Gas Pipeline is mainly supplied by the Tarim gas province in Xinjiang. It runs from Lunnan Oil and Gas Field in the Tarim Basin to Baihe Town in Shanghai, with a total length of 4,380km. Consisting of one trunk, three branches and other support pipelines, it can transmit 17 billion cubic meters of natural gas each year. The pipeline passes through 10 provinces (municipalities and autonomous regions), i.e., Xinjiang, Gansu, Ningxia, Shaanxi, Shanxi, Henan, Anhui, Jiangsu, Shanghai, and Zhejiang. The pipeline was kicked off on July 4, 2002, completed and put into trial operation on October 1, 2004, and became commercial operational on December 30, 2004.

Second West-East Gas Pipeline

The Second West-East Gas Pipeline is mainly supplied by gas from Central Asia. The 8,819km-long pipeline, consisting of one trunk and eight branches, runs from Horgos in Xinjiang, where it is connected with the Central Asia-China Gas Pipeline, to Shanghai and Hong Kong. This pipeline is capable of delivering 30 billion cubic meters annually for over 30 years. It passes through 14 provinces (municipalities and autonomous regions) including Xinjiang, Gansu, Ningxia, Shaanxi, Henan, Hubei, Jiangxi, Guangdong, Guangxi, Zhejiang, Shanghai, Jiangsu, Hunan, and Shandong, as well as Hong Kong SAR. Construction of the second pipeline was started in February 2008, and it was completed and put into operation in December 2012.

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 Horgos in 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 a section-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 it is expected to be operational in 2017.

Central Asia-China Gas Pipeline

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 in parallel, each running for 1,830 kilometers. Construction of Line A/B commenced in July 2008. With pipe diameter of 1,067mm, Line A became operational in December 2009, and Line B became operational in October, 2010. A delivery capacity of 30 billion cubic meters per annum was reached by the end of 2011.

Construction of Line C was started in September 2012. With a designed capacity of 25 billion cubic meters per annum, Line C’s pipe diameter is 1,219mm, 152mm larger than Line A/B. Line C became operational on May 31, 2014, boosting the overall delivery capacity of the Central Asia-China Gas Pipeline to 55 billion cubic meters per annum. This equals to approximately 20% of China’s annual natural gas consumption, and would substitute 73 million tons of standard coal, cutting carbon dioxide and sulfur dioxide emissions by 78 million tons and 1.21 million tons every year, respectively.

On September 13 in 2013, construction of Line D started. Totaling 1,000km with 840km outside China, Line D has a designed annual deliverability of 30 billion cubic meters, and is routed via Uzbekistan, Tajikistan and Kyrgyzstan to China. Upon the operation of Line D, the Central Asia-China Gas Pipeline will have an annual deliverability of 85 billion cubic meters, the largest gas transmission system in Central Asia.

Russia-China Crude Pipeline

The Russia-China Crude Pipeline extends from the Skovorodino sub-delivery station of Russia's Far East Pipeline, through Galinda at the Russian border, Heilongjiang province and Inner Mongolia, to Daqing terminal station. With a designed deliverability of 15 million metric tons a year, the pipeline is 1,030 kilometers long, including 63.40 kilometers in Russia and 965 kilometers in China.

Prior to construction of the 965km-long Chinese section of the Russia-China Crude Pipeline (from Mohe to Daqing), we conducted research on how to cope with the technical difficulties of laying pipe through 400km of virgin forest and 500 km of tundra in which temperatures can drop to -52°C. With our research results utilized in engineering design and construction techniques, we successfully welded 739km of the main part by the end of 2009. We also conducted a crossing for the main pipeline to run across the Heilongjiang River. The pilot hole for this control work was interconnected and reamed for the second pass. To minimize the environmental impact, the crossing was simultaneously carried out from both banks using directional drilling techniques. The 1,150m-long pipeline consists of two lines, one running and one standby, and was completed in June 2010.

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, it has a total length of 951km, pipe diameter of 813mm, 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 it is expected to be completed by the end of October 2017. According to our contract with Rosneft, the crude supply from Russia to China will be increased by 15 million tons annually through the Second Line upon its commercial operation in January 2018.

Eastern Route of Russia-China Gas Pipeline

The Eastern Route of Russia-China Gas Pipeline runs from the Kovykta Gas Field in Irkutsk Oblast of East Siberia and the Chayanda Gas Field in the Sakha Republic, and enters China at the Russia-China border at Heihe, Heilongjiang Province, before running through eight provinces, municipalities and autonomous regions such as Heilongjiang, Jilin and Inner Mongolia and ending in Shanghai. Construction of the 2,680km-long Russian section started on September 1, 2014. In China, a 3,170km-long pipeline and auxiliary underground gas storages will be built, and an existing 1,800km-long pipeline in parallel will be used. Construction commenced of the Chinese section of the eastern route of the Russia-China Gas Pipeline in Heihe, Heilongjiang Province, on June 29, 2015.

The eastern route is expected to be completed and become operational in 2018. According to a gas purchase and sales contract with CNPC, Gazprom will export gas to China via the route for 30 years since its commencement of operation, with the delivery gradually increasing to 38 billion cubic meters per year. To build the route, which is China's first long-distance gas pipeline of 1,422mm in diameter, we initiated research on the application of X80 steel pipes of 1,422mm in diameter beforehand. We took three years to overcome the difficulties in pipe making, fracture control, and equipment development, and formulated 13 technical standards.

Construction of the Chinese section faces challenges from the complex geology, rivers, frosts, and natural reserves, as well as permafrost along most of its route. In the preliminary planning of the section, we took into full consideration the potential environmental risks, and took measures for water protection, forest-fire prevention, and layered backfill to minimize the environmental impact.

The eastern route is one of the underpinning projects of China's Belt and Road Initiative. Its construction and operation will drive the development of infrastructure and associated industries, which will create job opportunities and boost the local economy along its route.

In 2016, The Chinese section of the Eastern Route of the Russia-China Gas Pipeline proceeded smoothly.

Abu Dhabi Crude Oil Pipeline

The trunk line of the Abu Dhabi Crude oil Pipeline has a total length of approximately 400km onshore, with designed annual deliverability of 75 million tons. The pipeline was put into trial operation by the end of 2010, and the whole project was completed in July 2012.

At the end of November 2008, IPIC and CNPC’s China Petroleum Engineering & Construction Corporation (CPECC) signed EPC contract with a total contract price of USD 3.29 billion. The Pipeline, from the Habshan Oilfield in the West to the Fujairah Port in the East, has a total length of 424.22km, of which 405.36km is on land with a diameter of 1,219mm; and 18.86km is offshore including 13.46km submarine section. The designed rated delivery capacity is 1.5 million barrels per day which will be loaded through marine single point moorings. The first shipment of exported crude oil was loaded on July 5, 2012.

During construction, all steps were deemed satisfactory by the owner, supervisor, and independent third-party inspector. The project registered the local best record with no fatality, no environmental, medical and transportation accident for 50 million man hours. Thanks to the technology management standards which are more stringent than international ones, all qualified rates have reached to 100%.

East-West Gas Pipeline in India

The East-West Gas Pipeline in India is 1,380 kilometers long, comprising eight contractual sections and involving intricate geological conditions and significant rock excavation. In July 2006, CNPC was awarded the contract for the pipeline and station construction of six sections, covering a total of 1,088 kilometers. The project started in February 2007. We used the CRC welding technique, large pipe slings and other new technologies to cross the 184m wide Kalu River. We further solved the difficulty in crossing the wide-span water reservoir by constructing three cofferdams. The East-West Gas Pipeline was completed in 2008.

Far-East Crude Pipeline in Russia

CNPC was contracted to construct the Aldan-Tynda section of the Far-East Crude Pipeline in Russia, running 170 kilometers with a pipe diameter of 1,220 millimeters. Despite extreme temperatures low as -67℃ in high-latitude areas (LAT: N50°), primitive forests, swamps and permanently frozen soil regions, we managed to complete the welding operations for the main part of the pipeline in June 2008 by means of conventional manual welding, semi-automatic welding and automatic welding, etc.