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海底含杂质超临界CO2管道瞬态流动保障研究
Study on transient flow assurance of subsea supercritical CO2 pipelines containing impurities
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- DOI:
- 10.3969/j.issn.1001-2206.2026.03.008
- 作者:
- 张临
- 作者单位:
- 中石化石油工程设计有限公司
- 关键词:
- CO2；超临界-密相；管道输送；瞬态；流动保障
CO2; supercritical-dense phase; pipeline transportation; transient state; flow assurance
- 摘要:
- CO2 运输是离岸碳捕集、利用与封存（Carbon Capture, Utilization and Storage, CCUS）产业链的关
键环节，也是规模化离岸CCUS工程实施的核心环节。由于超临界-密相CO2 兼具液体的高密度特性与气体
的高扩散性、低黏度特点，被认为是当前最经济高效的管道输送相态。以东海某离岸百万吨级CO2 封存项目
为例，重点开展海底含杂质超临界-密相CO2 管道的流动保障研究。研究中，首先采用HYSYS进行相态特性
分析，获取含杂质CO2 的临界参数，为管道输送参数设计提供基础数据支撑；然后运用OLGA对CO2 管道稳
态输送过程进行系统分析，进一步模拟分析停输、重启及放空等瞬态过程的流动特性。基于分析结果，提出
了针对性的管道安全操作建议，可为海底CO2 输送管道的流动保障研究提供技术参考。
CO2 transportation is a key link in the offshore carbon capture, utilization and storage (CCUS) industrial chain, and it is a core link for the large-scale construction of offshore CCUS projects. Among them, supercritical-dense phase CO2 is considered the most economically efficient pipeline transportation phase at present, because it combines the high-density characteristics of liquids with the high-diffusivity and low-viscosity characteristics of gases. Taking a million-ton offshore CO2 storage project in the East China Sea as an example, this paper focused on the flow assurance study of subsea supercritical-dense phase CO2 pipelines containing impurities. In the study, the HYSYS was first used to analyze the phase behavior and obtain the critical parameters of CO2 containing impurities, providing fundamental data support for the design of pipeline transportation parameters; then, the OLGA was applied to systematically analyze the steady-state transportation process of the CO2 pipeline and further simulate and analyze the flow characteristics of transient processes such as shutdown, restart, and blowdown. Based on the analysis results, targeted pipeline safety operation recommendations were proposed, which can provide a technical reference for the flow assurance study of subsea CO2 pipelines.