胜利油田突破关键技术——二氧化碳采油显身手

Core Viewpoint - The collaboration between Shengli Oilfield and Qilu Petrochemical has led to the establishment of China's first million-ton-level CCUS (Carbon Capture, Utilization, and Storage) demonstration project, effectively addressing key technical challenges in low-cost carbon capture, long-distance CO2 pipeline transportation, and geological storage in oil and gas fields, achieving a dual win of increased oil production and reduced carbon emissions [1][2][3]. Group 1: Project Overview - The CCUS project has injected over 2 million tons of CO2 since its inception, increasing daily oil production in the demonstration area from 220 tons to 460 tons [1]. - The project captures CO2 from Qilu Petrochemical's coal-to-hydrogen industrial tail gas, liquefies it, and transports it to Shengli Oilfield for oil recovery and storage [3]. - The project covers 12 oil reservoir blocks, with a design of 73 gas injection wells and 166 oil production wells, along with the construction of 15 gas injection stations and 2 centralized processing stations [3]. Group 2: Technical Innovations - Shengli Oilfield has established a "Key Laboratory for Carbon Capture, Utilization, and Storage" to enhance research and development in CCUS technologies [2]. - The project has developed various experimental devices for gas drive physical simulation, geological safety, and gas drive efficiency, leading to breakthroughs in CO2 high-pressure miscible flooding theory [2][9]. - A dedicated 109-kilometer CO2 transportation pipeline with an annual capacity of 1 million tons was constructed, addressing the challenges of long-distance CO2 transportation [5][6]. Group 3: Equipment and Methodology - The project utilizes a self-developed CO2 booster pump to maintain supercritical pressure during transportation, which is crucial for long-distance and low-cost CO2 delivery [6][7]. - The CCUS demonstration area is designed to inject over 10 million tons of CO2 over 15 years, with an expected increase in oil production of nearly 3 million tons [8][9]. - The project has led to the development of four national and industry CCUS standards, with 56 patents and 11 software copyrights granted [9].