二氧化碳变身驱油利器

Core Viewpoint - The construction of a 400-kilometer carbon dioxide pipeline in Jilin Province marks a significant advancement in China's carbon capture, utilization, and storage (CCUS) technology, aiming to enhance oil extraction and facilitate carbon storage [1][2]. Group 1: Pipeline Project Details - The pipeline will be the longest, largest diameter, and highest pressure carbon dioxide pipeline in China, connecting Jilin Petrochemical and Jilin Oilfield [1]. - The first phase of the project will transport carbon dioxide generated during production processes from Jilin Petrochemical and nearby enterprises to Jilin Oilfield for enhanced oil recovery or carbon storage [1]. Group 2: CCUS Technology and Implementation - Jilin Oilfield has been exploring methods to utilize carbon dioxide for oil extraction for over 30 years, implementing various enhanced oil recovery techniques [1]. - The Daqingzi Oilfield, characterized by low permeability and low yield, has seen a 25% increase in oil recovery rates through CO2 injection, with over 370,000 tons of CO2 injected cumulatively [2]. - The project aims to establish five CCUS demonstration zones by the end of 2024, contributing significantly to China's carbon reduction goals [2]. Group 3: Technical Innovations - The pipeline will utilize supercritical/mixed-phase CO2 transport technology, operating at a pressure of 14.5 MPa, which is significantly higher than most existing pipelines [3]. - Advanced technologies such as centrifugal compressors and fiber-optic leak detection will be employed, filling domestic technical gaps in CO2 transport [3]. Group 4: Future Prospects and Applications - The pipeline is designed to integrate with surrounding renewable energy projects, allowing for the absorption of external carbon sources and providing CO2 for various industrial applications [3]. - Jilin Oilfield has already provided CCUS solutions to nine companies and plans to expand its pipeline network to enhance CO2 transport capacity [3].