In the depths of the Songnen Plain, an invisible giant dragon is brewing. When Sinopec Petroleum Engineering Construction Co., Ltd. won the first bid of 1.772 billion yuan, an "underground battle" that will affect the energy landscape of Northeast China for decades to come officially sounded the call to action. This is not just a simple pipeline laying, but also a crucial extension of the cross-border energy corridor between China and Russia to the inland hinterland.

With the completion of the bidding process for the National Pipeline Group, this 775.1 kilometer super pipeline has finally unveiled its mysterious veil. Unlike previous simple price competition bidding, this evaluation will give more weight to high-altitude construction experience and complex geological response plans. This means that the pipeline that is about to start construction must be a steel backbone that can withstand the test of extreme cold.

Giants compete for excellence and select the best

This bidding site can be regarded as the "All Star Game" in the domestic oil and gas construction field. In the three announced sections, companies such as Sinopec, PetroChina, and local leader Liaohe Oilfield Construction engaged in fierce competition. The data shows that the price difference between the top three candidates in each section is negligible, and the competition is unprecedented.

In the end, Sinopec Zhongyuan Oilfield Construction, Liaohe Oilfield Construction, and the joint venture between China Petroleum Pipeline Second Company and Dagang Oilfield Construction each won the first candidate qualification for three sections. This is not only a recognition of the company's strength, but also an affirmation of its construction experience in complex high-altitude working conditions. With a construction period of 710 days and a section length of 279 kilometers, each number represents the ice and snow challenges that the builders will soon face.

Super engineering crosses mountains and valleys

Opening the engineering drawings, the construction difficulty is clear at a glance. The total length of the Heihe to Daqing section is 578.3 kilometers. In order to meet different gas transmission needs, the design team adopted a differentiated variable diameter scheme: a 1422mm ultra large diameter pipeline was used near the port to cope with the surging cross-border airflow; In the main trunk section, a high-pressure pipe diameter of 1219 millimeters is used for long-distance transportation.

This is not just a pipeline, but also a conquest of geographical barriers. The entire line will face the task of crossing 9 large and medium-sized water bodies, 6 railway trunk lines, 7 highway networks, and 25 high-grade highways. In the section from Daqing to Changling, in addition to the 196.8 kilometer main line, a 430 meter dedicated connecting branch pipe needs to be built to achieve seamless integration of the old and new pipeline networks, making the entire Northeast pipeline network truly "alive".

The energy artery benefits people's livelihoods

The completion of this pipeline will directly fill the coverage gap of the gas transmission trunk line in Heilongjiang Province. As the core supporting project of the Northeast Energy Corridor of the China Russia East Line, it has elevated the diversion, transportation, and allocation capabilities of Russian gas entering the country to a new level. The annual designed gas transmission capacity of 48 billion cubic meters is sufficient to support the industrial gas consumption of the old industrial base in Northeast China and the winter heating needs of millions of residents.keywords:Engineering infrastructure

More importantly, the arrival of large-scale clean natural gas will accelerate the process of replacing traditional coal in this region. From Harbin to Changchun, from factory workshops to thousands of households, this energy artery not only delivers power, but also hopes for green development, laying a solid energy foundation for the low-carbon transformation and comprehensive revitalization of Northeast China.Editor/Yang Meiling