【Ten Years of Rapid Development in Chemical Processing Equipment】New Records for Undersea Directional Drilling of 1422-mm and 1290-meter Long Pipelines from 1971 to 2019
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Witnessing the ten-year rapid development of chemical engineering equipment, I praise the prosperity and strength of modern China. This is just a modest contribution; I invite everyone to participate more actively in the forum discussions – the more people involved, the more lively it becomes. Haichuan becomes even better with your presence. There are prizes for those who leave replies; feel free to discuss! ------------------------------------------------- In December 2019, the “Bohai Nengke” brand of drill pipes, developed and manufactured at the Qingxian Industrial Park of CNPC Bohai Petroleum Equipment Manufacturing Co., Ltd., was used to assist Company 4 of the Pipeline Bureau in successfully completing the directional drilling operation for the Tangshan LNG transmission pipeline project. This operation set a new record for long-distance underwater directional drilling: a pipe with a diameter of 1422 millimeters and a length of 1289.93 meters.
【Ten Years of Great Development in Chemical Engineering Equipment】The 2720-meter directional drilling project across the Yangtze River from Lubei to Chizhou from 2016 to 2022 https://bbs.hcbbs.com/thread-3587444-1-1.html (Source: Haichuan Network – Chemical Industry Trends)
The Tangshan LNG export pipeline project is a supporting project for the development of the natural gas production, supply, storage, and distribution infrastructure; the directional drilling across the Na Chao River represents the key challenging element in this project. The designed horizontal crossing length is 1,285 meters; this represents the first time in China that a pipeline of such large diameter, high pressure, and high steel grade has been laid across marine sedimentary formations. The crossing route passes through 12 different types of marine sedimentary formations, making the construction process extremely challenging. High performance and quality standards are required for the drill pipes, which are the main equipment used to withstand pull forces of over a thousand tons. To ensure the smooth implementation of this key project, the construction unit, Pipeline Bureau Company 4, carefully selected high-strength drill pipes of the V150 grade and 6-5/8 inch size from the \"Bohai Nengke\" brand, which are known as \"China’s best drill pipes\", to undertake this task. This drill pipe is a product highly recommended by CNPC, specifically \"customized\" for users by Bohai Nengke Drill Pipe Co., Ltd., which is part of Bohai Equipment Drilling Equipment Company. Its tensile and torsional strength is 1.3 times that of ordinary drill pipes of the same specification, giving it excellent overall mechanical properties – making it particularly suitable for penetration projects involving extremely high torque and large pulling forces.
During the 61-day process of drilling, reaming, and pulling back the pipeline, the \"Bohai Nengke\" drilling rig, with its interconnected drill pipes, overcame various challenges as it penetrated through different marine sedimentary formations. With a reaming diameter of 1.8 meters and a pulling force of 1,300 tons, it successfully pulled back the 1,289.93-meter-long pipeline at 1:58 a.m. on November 17th. This achievement contributed significantly to the successful completion of China’s largest-diameter, longest-distance submarine directional drilling project, and it also demonstrated the high quality and performance of the \"Bohai Nengke\" drilling rig manufactured by Bohai Equipment. It received high praise from both the project owner and the construction contractors.
【Ten Years of Great Development in Chemical Engineering Equipment】The 890.14-meter directional drilling project in Wufuling from 2007 to 2015 https://bbs.hcbbs.com/thread-3587447-1-1.html (Source: Haichuan Network – Chemical Industry Forum)
【Ten Years of Great Development in Chemical Engineering Equipment】The 2403-meter long pipeline double-track project for the Yangtze River crossing in Jiujiang, from 1971 to 2015 https://bbs.hcbbs.com/thread-3587448-1-1.html (Source: Haichuan Network – Chemical Industry Forum)
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