【History of Haichuan Pipelines】China’s longest refined oil pipeline

Project Name: Lanzhou-Zhengzhou-Changsha Crude Oil Pipeline Project
Region: Hebei
Publication Date: October 10, 2006
Project Type: New construction
Total Investment: 875 million yuan
Industry: Others
Funding Status: Fully secured
Progress Stage: Feasibility study approved for submission
Construction Period: From 2007 to 2010
Approval Authority: Industry regulatory department
Responsible Agency:
Agency Name and Contact Information: China National Petroleum Pipeline Corporation
Address: No. 87, Guangyang Road, Langfang City, Hebei Province
Brief Project Description:
Key Equipment: Oil transfer pumps, pipeline networks, valves, instruments and meters, fire protection facilities, remote monitoring and data acquisition systems
Project Overview: The main route of this crude oil pipeline runs from Lanzhou to Dingxi, Xianyang, Tongguan, Sanmenxia, Luoyang, Zhengzhou, Wuhan, and Changsha. The total length of the pipeline network is 2,073 kilometers, with a designed pressure of 8 MPa–10 MPa. The entire pipeline system includes 23 stations and 23 branch lines. The total length of the branch lines is 931 kilometers, including 1 distribution main line (the Shanxi main line, approximately 491 kilometers long and mainly located in Shanxi Province). The width of the construction zone is 14 to 16 meters. The total investment for the project is 8.75 billion yuan. Design consulting firm and contact information: Firm name – Planning General Institute of China National Petroleum Corporation

The main section of China’s longest petroleum product pipeline, the Lanzhou–Zhengzhou section, has been completed. July 31, 2008, 14:26. Source: Xinhua Net. News from Xi’an, Xinhua Net, July 31 (Lin Peijun): The Lanzhou–Zhengzhou–Changsha project being developed by China National Petroleum Corporation is currently China’s longest petroleum product pipeline. The main pipeline section of this project between Lanzhou and Zhengzhou was successfully completed today. 　 The Lan-Zheng-Chang pipeline is another **major energy strategic artery following the Lan-Cheng-Yu pipeline. 　　The Lanzhou-Zhengzhou pipeline starts in Lanzhou City, Gansu Province, and ends in Changsha City, Hunan Province. It passes through 67 counties and cities in 5 provinces – Gansu, Shaanxi, Henan, Hubei, and Hunan – and consists of 1 main line, 2 feed lines, and 14 distribution lines, with a total length of 3,179 kilometers. This project is a concrete manifestation of the strategic initiative to **transport oil from the west to the east and from the north to the south**; it represents a comprehensive strategic measure taken by China National Petroleum Corporation to implement the relevant policies as well as the State Council’s strategy for the development of the western region. The construction of this project will not only help alleviate the imbalance between resources in the western region and the production, supply, and demand in the oil-consuming areas in central, western, and southern China, but it will also contribute to the safe, stable, and efficient transportation of oil products, thereby supporting the strategic plans for energy security. 　　On August 18, 2007, the Pipeline Bureau of China National Petroleum Corporation, acting as the EPC (design, procurement, construction) general contractor, kicked off the fourth wave of construction in China’s pipeline history in the Central Plains region. It then led four subsidiaries and 11 affiliated oil construction companies to take up positions along a total of over 3,000 kilometers of pipelines in the five provinces of Gansu, Shaanxi, Henan, Hubei, and Hunan. The ice and snow disaster that hit the southern region at the beginning of the year disrupted the ideal timing for winter construction in the paddy fields of the Two Lakes area, where irrigation had not yet been carried out. As a result, the EPC project team of the Pipeline Bureau was forced to abandon its original plan of addressing the more challenging sections in the Two Lakes area and west of Zhengzhou first, followed by the plain areas. They had to adjust their design plans and material procurement schedules promptly, which demonstrates the advantages of the EPC management model. 　　Unit 13 of Company 1 of the Pipeline Bureau, which returned from a project abroad in March, chose May 12 as its start date. At 14:28, as soon as the pipe lifter lifted the pipe, the ground beneath their feet began to shake. Zhang Jihai, assistant to the director of the pipeline bureau and project manager, who was interviewed at the EPC headquarters in Xi’an, pointed to the pipeline map and explained to the reporters, “Many construction sites such as Fengxiang and Zhangjiachuan are located in earthquake zones; the nearest ones are only a few hundred kilometers away from the epicenter.” Although construction was hindered, the earthquake had a greater impact on people’s psychology. ”They dared not stay in the house, so they bought tents; some were set up in the camp, while others were placed directly at the construction site. Quota-based water supply, living in harsh conditions, mosquito bites, continuous aftershocks… None of these difficulties were able to stop the steel dragon from moving forward. 　　Su Shifeng, Director of the Pipeline Bureau and Party Secretary, visited the construction site three times to oversee the work and meet with the employees involved in the project. He said that considering the progress of construction, the Lan-Zheng-Chang project, which has faced challenges due to ice, snow, and earthquakes, is progressing satisfactorily. 　　At present, they are fully committed to the construction of the Zhengzhou-Changsha section, in order to release personnel and equipment resources as soon as possible for the Central Asia pipeline project and the West-East Gas Pipeline Project Phase II, which were launched earlier.

The main section of China’s longest petroleum product pipeline, the Lanzhou–Zhengzhou section, has been completed. July 31, 2008, 14:26. Source: Xinhua Net. News from Xi’an, Xinhua Net, July 31 (Lin Peijun): The Lanzhou–Zhengzhou–Changsha project being developed by China National Petroleum Corporation is currently China’s longest petroleum product pipeline. The main pipeline section of this project between Lanzhou and Zhengzhou was successfully completed today.

【History of Haichuan Pipes】The summary post is being updated continuously; learn about the development process of various pipes at https://bbs.hcbbs.com/thread-3068575-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Forum Website)

It is reported that China National Petroleum Corporation (hereinafter referred to as CNPC) will invest 800 million yuan to build a 400,000-cubic-meter oil depot and a dedicated railway line for the depot in Changsha, Hunan. At present, the project has completed site selection, approval procedures, and environmental impact assessments; construction is expected to begin by the end of this year, with completion and operation set for October 2009. It is understood that in order to effectively alleviate the supply and demand imbalance of refined oil in Changsha and other areas of Hunan, at the request of the people’s government of Hunan Province, PetroChina, after obtaining approval from the relevant development and reform commission, decided to extend the originally planned Lanzhou–Zhengzhou–Wuhan refined oil pipeline project to Changsha. It is reported that the Lanzhou-Zhengzhou-Changsha refined oil pipeline project has commenced construction. The total length of the main pipeline is 2,148.4 kilometers, with a total investment of 18.7 billion yuan. Of this, the refined oil pipeline spans 185.2 kilometers within Hunan Province (including three branch pipelines in Yueyang, Changsha, and Xiangtan). According to Feng Haiqiang, director of the Management Committee of Changsha Tongguan Circular Economy Industrial Base, only 15 kilometers of the main pipeline section in Changsha remain to be welded, while the design work for the branch pipelines has already begun. The designed oil transport capacity for the Wuhan-Changsha section of the pipeline is 2.5 million tons per year. “The Changsha oil depot, which is integrated with pipelines and located in the circular economy industrial park, has a total investment of around 800 million yuan. The main construction elements include a oil storage capacity of 400,000 cubic meters, a dedicated railway line for the oil depot, and a highway fuel dispensing station with 12 bays; the planned net land area for the oil depot is 380 mu. ”Feng Haiqiang said that the pipeline and associated oil depot project is expected to start construction by the end of this year, with completion and operation set for October 2009. It is understood that the Changsha oil depot is one of the larger refined oil depots in Hunan. Once completed, refined products such as gasoline and diesel from the northeast and northwest will be transported via pipelines to the Changsha oil depot, and from there distributed to various cities and prefectures in Hunan as well as neighboring provinces through railways, roads, and waterways.

Beijing, People’s Daily Online, November 6 – According to the official website of the State-owned Assets Supervision and Administration Commission, the trial operation of the Yangluo-Changsha branch line of the Lanzhou-Zhengzhou-Changsha refined oil pipeline project (referred to as the Lanzhou-Zhengzhou-Changsha refined oil pipeline) was successfully completed recently. Thus, the entire main line of the Lan-Zheng-Chang crude oil pipeline has been completed and put into operation. The Lanzhou-Zhengzhou long-distance oil pipeline has a total length of 2,737.8 kilometers, of which the main line is 2,080 kilometers long and the branch lines are 657.8 kilometers long. The main route starts in Lanzhou City, Gansu Province, passes through 69 counties and cities in 5 provinces – Gansu, Shaanxi, Henan, Hubei, and Hunan – and ends in Changsha City, Hunan Province. The Lan-Zheng-Chang crude oil pipeline has a maximum annual transport capacity of 15 million tons, with a design pressure ranging from 8 MPa to 14 MPa. In recent years, with the operation of the Central Asia Pipeline and the Western Pipeline, as well as the increased processing capacity of refining enterprises in the western region, a large volume of refined oil destined for export has gathered in Lanzhou, resulting in greater pressure on exports. Coupled with the economic development in the Central Plains and Hubei-Hunan regions, a large amount of refined oil must be imported from various places each year to meet market demand. The completion and operation of the Lanzhou-Zhengzhou main pipeline for refined oil have resolved the issue of transporting refined oil out of Lanzhou, reduced transportation costs, and ensured the safe, stable, and efficient delivery of oil. It also holds great practical significance for accelerating the development of main pipelines for transporting oil from the north to the south and from the west to the east; by using these main pipelines to drive the growth of branch lines, it is possible to gradually expand into regional markets, ultimately creating a refined oil distribution network that is economically rational and flexible in terms of transportation. As the longest and largest-diameter refined oil pipeline project built in China at one time, the Lan-Zheng-Chang refined oil pipeline is the first project constructed by CNPC under the separation of construction and operation system. It adopts an owner+EPC management model characterized by \"one-level management, two entities, three parties’ responsibilities, and four unifications\". As of November 5, the Yangluo–Changsha feeder line had transported 150,000 cubic meters of diesel, of which 50,846 cubic meters were supplied to sales depots.

Joint prevention and control efforts are taken to eliminate potential hazards associated with construction and excavation. The Lan-Zheng-Chang pipeline is 2,086 kilometers long in total, of which the section in Changsha is 177 kilometers long. How is safety ensured along the pipeline? In front of the office building at the oil transfer station, the reporter saw a row of signposts. They are all elongated in shape, with a yellowish-red color tone. “Our oil pipelines pass through ditches, across waterways, and over farmlands. To prevent damage to the pipelines and resulting oil leaks, we place marker posts every kilometer to indicate the presence of oil pipes underground. Additionally, we organize three levels of inspection teams to monitor the areas along the pipelines. ”The person in charge explained. “‘The task of conducting inspections throughout the area, coupled with limited inspection resources, poses a test to our safety management capabilities. ”The reporter learned that the pipelines under the jurisdiction of CNPC Pipeline Changsha Branch run through two major economic zones: the urban cluster in the middle reaches of the Yangtze River in Wuhan, and the Changsha-Zhuzhou-Xiangtan urban cluster; over the past decade, the total GDP of these areas has increased by nearly four times. In the process of economic development, third-party construction becomes a threat to pipeline safety. Statistics show that a total of 744 instances of third-party construction have occurred since 2010, with 325 of them taking place alone in 2018. Faced with this challenge, the branch office proactively carried out risk analysis together with the construction team, implemented joint prevention and control measures, and gave top priority to safety training for the construction workers, thereby ensuring the safe and stable operation of the pipelines.

The oil blending unit ensures that the oil meets 100% quality standards. Reporters learned that in order to increase the utilization rate of the oil pipelines, both gasoline and diesel are transported through these pipelines in batches in accordance with a scheduling plan. One of the problems caused by this method of operation is the handling of mixed oils. The quality of petroleum products is related to the safety of consumers when using them. How was this problem solved again? Pointing to a set of equipment in the oil pumping station that was about 4 stories tall, the official explained, “This is the secret weapon that ensures the quality of the oil supply.” ” “This set of equipment utilizes the principle of the different densities of diesel and gasoline; it feeds the refined oil from the mixing stage into the oil mixing treatment device, where it is heated for separation. ”The person in charge explained that this self-developed oil blending treatment system has undergone 13 modifications and process optimizations, resolving 82 emergency issues to date. Since its deployment, it has saved over 10 million yuan in costs. It not only helps the company achieve improvements in quality and efficiency but also makes a positive contribution to ensuring that areas along the pipeline have access to high-quality, low-emission energy, guaranteeing that 100% of the oil supplied to end-users meets the required standards.