“铜白潼”管道渭河定向钻回拖成功

Core Viewpoint - The successful completion of the directional drilling for the "Tongchuan–Baihe–Tongguan" gas pipeline project sets a new world record for the length of directional drilling in sandy strata with a diameter of 610 mm, reaching 4259.67 meters [1]. Group 1: Project Details - The "Tongchuan–Baihe–Tongguan" gas pipeline project is a key construction initiative in Shaanxi Province aimed at improving the natural gas network layout and enhancing gas supply security in the Weibei region [1]. - The project was independently designed and executed by China National Petroleum Pipeline Engineering Company, which identified and addressed various technical challenges related to the complex geological conditions of the Weihe River [1]. Group 2: Technical Innovations - The design team implemented strict requirements for drilling machine selection, lightweight drill rod combinations, and mud composition to tackle risks such as local collapse, pipe sticking, and high drag during the back-dragging process [1]. - A unique design approach was adopted, including a smooth crossing curve with small entry and exit angles, and a "pre-excavated pit + pipe hoisting machine + hoisting basket + sending trench" design to facilitate the successful back-dragging of the large-diameter pipeline [1]. Group 3: Environmental Considerations - To protect the fragile ecosystem of the Weihe River, the design team established effective technical measures for soil erosion prevention, waste mud treatment, and solid waste and domestic garbage management to mitigate environmental damage during construction [2].