摘要
二氧化碳输送管道是碳捕集、利用与封存(CCUS)全流程的关键,是提高油田采收率和实现“双碳”目标的重要环节。中国石油吉林油田公司目前已建成二氧化碳输气、注入及集气管道总长达200 km,在国内率先建成了CCUS全流程示范工程,在工程设计、工程建设及工程运行等方面积累了宝贵经验。为了系统总结该示范工程的经验,在系统全面分析吉林油田二氧化碳输送管道设计、建设及运维各阶段面临的技术难题与攻关方法的基础上,依托模拟软件、实验研究并结合现场实践,在管材优选、气质控制、设备定型与施工要求等关键技术领域形成了相关的标准和体系。研究结果表明:①构建了超临界/密相二氧化碳管道止裂韧性的定量计算体系,为高压管道的安全设计与断裂控制提供了关键理论依据;②明确了二氧化碳管输中水、硫化氢、氧气等关键杂质含量的限值标准,有效降低了管道内部腐蚀和运行风险;③形成了一套适用于超临界二氧化碳增压注入设备的选型方法,并创新实现了智能运行监控模式,提高了长输管道系统的稳定性和管控效率。结论认为,通过吉林油田CCUS全流程示范工程实践,形成了一套可推广的二氧化碳管道设计、建设与运行关键技术体系,为推动中国二氧化碳管道输送技术提升与工程应用提供了技术参考和经验借鉴。
CO_(2) transportation pipeline is a key element in the entire process of carbon capture,utilization and storage(CCUS),as well as an important link to the improvement of oilfield recovery factor and the achievement of dual carbon goals.PetroChina Jilin Oilfield Company has built up a total of 200 km of CO_(2) transportation,injection and gathering pipelines,taken the lead in constructing a whole-process CCUS demonstration project in China,and accumulated valuable experience in the engineering design,construction and operation.To summarize the experiences obtained in this demonstration project,this paper analyzes the technical challenges and research methods of Jilin Oilfield in the design,construction,operation and maintenance stages of CO_(2) transmission pipeline.Then,by virtue of simulation software and experimental study,combined with field practice,the related standards and systems are formulated for the key technical fields such as pipe material optimization,gas quality control,equipment finalization,and construction requirements.And the following research results are obtained.First,a system for quantitatively calculating the crack arrest toughness of supercritical/dense-phase CO_(2) pipelines is constructed,which provides a key theoretical basis for the safety design and cracking control of highpressure pipelines.Second,the limit content of water,H2S,O2 and other key impurities in CO_(2) pipeline transportation is determined,which effectively reduces the internal corrosion and operation risks of pipelines.Third,a set of methods suitable for the selection of supercritical CO_(2) pressurized injection equipment is formed,and an intelligent operation monitoring mode is innovatively realized,which improves the stability and control efficiency of long-distance pipeline system.In conclusion,a set of promotable key technologies for CO_(2) pipeline design,construction and operation is formed based on the practice of the whole-process CCUS demonstration engineering in Jilin Oilfield.In addition,the related practical experiences provide technical reference and guidance for promoting the upgrading and engineering application of CO_(2) pipeline technologies in China.
作者
文士豪
张德平
李明卓
刘雨桐
宁岩
李洋
WEN Shihao;ZHANG Deping;LI Mingzhuo;LIU Yutong;NING Yan;LI Yang(PetroChina Jilin Oilfield Company,Songyuan,Jilin 138000,China)
出处
《天然气工业》
北大核心
2025年第9期202-211,共10页
Natural Gas Industry
基金
国家科技重大专项项目“CO_(2)驱油与封存全流程关键工程工艺技术及装备研究”(编号:2024ZD1406603)
国家科技重大专项项目“吉林油田CO_(2)驱油与埋存工业化应用技术研究”(编号:2016ZX05016-002)
中国石油天然气股份有限公司科技项目“CCUS注采工艺、产出气循环利用及高效防腐关键技术研究”(编号:2021ZZ01-04)。
