Chinanews.com, Langfang, August 15 (Song Mintao and Zhang Qiang) China Petroleum Pipeline Bureau Engineering Co., Ltd. (hereinafter referred to as the Pipeline Bureau) revealed on the 15th that at 11:56 on the 14th, the company was responsible for the construction of the Sino-Russian East Route Natural Gas Pipeline ( Changling-Yongqing) The supervisor of the Xinraoyang River directional drilling project successfully traversed and pulled back, setting a new record for the longest traversing distance of large pipe diameters (1633.6 meters) in China, marking another mid-section of the Sino-Russian Eastern Route Project The control project was overcome.
This project is located on the Raoyang River in Heishan County, Jinzhou City, Liaoning Province, and the fourth company of the Pipeline Bureau is responsible for the construction. The length of Xinraoyang River directional drilling crossing is 1633.6 meters, and the pipe size is 1219mm×27.5mm. It is the longest directional drilling crossing project with D1219mm pipe diameter in China. Due to the geological construction, the whole process is mainly fine sand and holes are formed. Poor performance, easily forming risks such as collapsed holes, and the large diameter of the crossing pipe and long crossing distance make the construction extremely difficult.
According to Li Jinxiang, Secretary and Manager of the Party Committee of the Fourth Company of the Pipeline Bureau, Xinrao Yanghe was in charge of the directional drilling crossing construction on May 5, 2020. The team participating in the construction of the four companies followed the established plan and the suggestions made by experts during the construction process. The optimization of the hole reaming process, the regulation of mud performance, the guarantee of the pipeline dragging and floating measures, and the setting of the pipe pusher are implemented one by one. The safeguard measures are strictly in place and the key processes are carefully controlled.
According to reports, during the entire construction process, the company meticulously organized, scientifically constructed, rigorously operated, refined management, boldly carried out technological innovation, optimized mud formula, and strengthened on-site management, clarified responsibilities, and ensured safety. Finally, it went through a five-level expansion. Holes and repeated hole washing operations finally ensured the completion of the drag-back, and created a new record for the longest directional drilling crossing project with a large pipe diameter (D1219 mm) in China.
The completion of the Xinraoyang River directional drilling lead crossing has laid the foundation for the planned commissioning of the Sino-Russian Eastern Route (Changling-Yongqing) project, and has accumulated valuable resources for directional drilling in the field of large pipe diameter and long distance crossing. Construction experience. (Finish)