[Ten years of development of chemical equipment] 724-2013 3302m Jiangdu-Rudong Natural Gas Taixing to Furong Section Yangtze River Directional Drilling Crosses a New World Record

　At 4:06 on May 21, when the prefabricated pipeline slowly emerged from the bank of the Yangtze River in Ligang Town, Jiangyin City, the entire construction site was filled with joy. The Yangtze River directional drilling crossing of the Taixing-Furong section of the Jiangdu-Rudong Natural Gas Pipeline of the PetroChina West-East Gas Pipeline Company constructed in the EPC manner by the China Petroleum Pipeline Bureau Crossing Company was successfully towed back, setting a new world record for a directional drilling crossing of a pipe diameter of 711 mm x a length of 3302 meters. This is a new major breakthrough in the directional drilling industry of my country's oil and gas pipelines. 　　The China Petroleum Pipeline Bureau Crossing Company, which is responsible for this crossing construction task, is a professional horizontal directional drilling company with the largest equipment scale and the strongest comprehensive strength in China. They have repeatedly made extraordinary achievements in the construction of the world-famous West-East Gas Pipeline First and Second Lines, Shaanxi-Beijing First, Second and Third Lines, as well as many large foreign oil and gas pipelines. They have successfully crossed the Yangtze River, Yellow River, Songhua River, Qiantang River, Pearl River, Nile River, Irrawaddy River and other large domestic and foreign rivers many times. As a result, this professional team has gained the reputation of "China's No. 1 wearer". 　　Cross company to guarantee service * * Taking the construction of energy channels and key projects of PetroChina as their own responsibility, they continue to lead the development and technological progress of the directional drilling industry. They have always been the record holders for two-way and one-way crossing of large rivers at home and abroad. Especially in the past five short months, they have surpassed themselves time and time again and successfully set three world records for directional drill crossings. The new world record set by the Yangtze River directional drill crossing of the West-East Gas Pipeline Project is the seventh world record set by the China Petroleum Pipeline Bureau Crossing Company.

　The Jiangdu-Rudong Natural Gas Pipeline Project of PetroChina West-East Gas Pipeline Company is an important project that connects the Rudong LNG receiving station to southern Jiangsu and the first-line West-East Gas Pipeline. The project starts from Taixing Distribution Station in the north and ends at Furong Distribution Station in the south. According to the overall direction of the line, the third phase of the project requires three pipelines to cross the Yangtze River between Jingjiang and Jiangyin. It is a key control project for the entire line, including one refined oil pipeline with a diameter of 406.4 mm (Line C) and two natural gas pipelines with a diameter of 711 mm (Line A and B). The crossing length of the three pipelines is all 3,302 meters, all of which are implemented by the crossing company. 　　The construction of the 711 mm diameter pipeline crossing 3,302 meters of medium-diameter and ultra-long-distance pipelines is extremely difficult and risky.

It is during the construction of these "unique in the history of world travel" projects that the time-travel company has gradually developed and grown. 　　At the beginning of the company's reorganization in 2003, it concentrated its superior forces on the West-East Gas Transmission Line and successfully completed 32 of the 36 crossings and two crossings of the Sudan Nile River. 　　In 2004, we completed the task of crossing 33 rivers of the Zhongwu Gas Pipeline, successfully implemented the beach-sea crossing of Ningping Lake in Ningbo and Shanghai, and set a world record of 1,999 meters in length for offshore directional drilling. 　　In 2005, the Western Pipeline crossed Renshou Mountain, pioneering the crossing of large-scale mountains in China and expanding the application field of directional drilling technology. 　　In 2006, Thailand Project 15 was fully completed in less than 5 months and was highly praised by the American Bechtel Supervision Company. 　　In 2007, the Qiantang River crossing was successfully completed using docking crossing technology for the first time, setting a world record for a directional drilling crossing with a diameter of 813 mm and a length of 2,454 meters. ； The Indian project KIM River crossing was successfully towed back once, filling the gap in domestic performance of large-diameter pipeline crossings with a diameter of 1,219 mm. 　　In 2008, Zhuhai Modaomen waterway crossing set a world record for a directional drill crossing with a pipe diameter of 660 mm and a length of 2,630 meters. 　　From 2008 to 2009, the Central Asia Pipeline crossed the Ili River and the A and B double pipelines were connected one month ahead of schedule. 　　In 2010, the China-Russia crude oil pipeline crossed Heilongjiang, successfully overcoming the "world-class crossing problem" and ensuring that the China-Russia crude oil pipeline was connected on schedule. 　　In 2011, the China-Myanmar Pipeline crossed the Irrawaddy River and was completely successful in just 86 days. The Second West-East Gas Pipeline has completed the most difficult 1,219mm large-diameter crossing projects for eight main lines, as well as 50 river crossing tasks for branch lines. The Huiyin Line crossed the Yellow River and successfully cleared the barrier in just 20 days. The Lanzheng Yangtze River crossing successfully broke through the Yangtze River natural moat after 449 days. 　　In 2012, it successfully crossed the Daliao River on the Yingpan connection line, setting a world record for a single directional drill drilling through a pipeline with a diameter of 711 mm and a length of 2,480 meters. ； The Changhu Pipeline crosses the Yellow River on both sides, ensuring that the entire project will be put into operation on "9.30" ； The Guangzhou-Shenzhen branch line Tonghu Water Network (2) crossed and was successfully towed back once. The Longjiang River branch line in Guangnan, the No. 5 trench gas pipeline of the China-Myanmar Pipeline, and the Marsabram Canal crossing project in Iraq have all achieved success. 　　In March 2013, the Yangtze River directional crossing project of the Jingjiang-Jiangyin refined oil product pipeline was successfully towed back in one go, setting a world record for directional crossing of a pipe diameter of 406.4 mm × length of 3302 meters. It has been a song and song along the way. The crossing company has made more solid steps on the road of constantly meeting challenges and surpassing itself.

According to reports, the crossing project lasted 62 days and featured many technological innovations. For example, by taking advantage of the geographical conditions of the Yangtze River branch, flexible laying has reduced the occupation of 20 roads and the demolition of 16 private houses. ； Modified epoxy fiberglass reinforced plastic pipelines are used for anti-corrosion to avoid scratches during the back-towing process and enhance the corrosion resistance of the pipelines. ； For the first time, a submarine cable with strong erosion resistance was used 1.5 meters under the river bed to lay a magnetic field that generates accurate data feedback, and drill pipes of different specifications and models were configured in sections, ensuring the successful implementation of ultra-long distance docking operations for pilot holes. In the view of many industry experts, the success of this crossing is an important symbol of the improvement of my country's directional drilling crossing technology level and construction capabilities. Zhao Shaochun told reporters that this crossing project is a benchmark, and the China National Petroleum and Natural Gas Pipeline Bureau Crossing Company will also undertake crossing projects with larger diameters and larger lengths.