我国首个百万吨级非混相驱CCUS全产业链示范基地核心工程投产

Core Viewpoint - The successful operation of the CCUS-EOR system at Daqing Oilfield marks the establishment of China's first million-ton-level non-miscible drive CCUS full industry chain demonstration base, which is significant for the green and low-carbon transformation of the oil industry and contributes to achieving carbon neutrality goals [1] Group 1 - The CCUS project area began construction in July 2024 and was completed in just 113 days, featuring a liquid CO2 injection station with a daily injection capacity of 800 tons, 22 injection wells, and 38 production well systems [1] - By the time the collection and transportation system was put into operation, a total of 79,000 tons of CO2 had been injected [1] - The project team employed innovative methods such as "water-gas alternating + well insulation diffusion + single well dynamic control" to eliminate risks associated with low-temperature CO2, ensuring the successful production of 38 production wells [1] Group 2 - To address the challenge of high gas content in the produced liquid affecting the original collection and transportation system, researchers designed a two-stage separation process, enhancing the safety and stability of the collection system [1] - The operation of this system fills a gap in China's construction of million-ton-level non-miscible drive CCUS full industry chain, providing a replicable and scalable solution for the oil industry [1] - The project is expected to play a crucial role in promoting the realization of the "dual carbon" goals [1]