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在高温和低透性水库中对CO2泡洪水系统的实验研究

Liyang Wang¹, Chao Ma^1,2,3

¹School of Petroleum Engineering, Yangtze University, Wuhan 434100, China.

|August 18, 2025

概括

使用FA278表面活性剂的新型二氧化碳泡灌系统在高温,低透性水库中提高了11.09%的石油回收率. 这解决了诸如气体管道等挑战,并提高了石油开采的整体效率.

科学领域:

石油工程是石油工程中的一个.
增强石油回收的方法
表面活性剂化学表面活性剂化学

背景情况:

高温 (97.3°C) 和低透度的水库对石油开采构成重大挑战.
困难包括注水问题,二氧化碳注入期间的气体导通,以及需要改进的回收方法.
吉林油田的H79区块需要新的开发策略来促进石油回收.

研究的目的:

确定和开发一种新的表面活性剂,用于二氧化碳泡洪水.
为了创建一个CO2泡泛滥系统,优化高温,低透性条件.
评估开发系统的增强石油回收 (EOR) 性能.

主要方法:

一种新型的硫酸盐类型基醇双基表面活性剂 (FA278) 的鉴定和特征 (FA278).
使用FA278和FS24 (0.40%FA278,0.12%FS24) 的二氧化碳泡洪水系统的开发.
评估系统特性 (发泡,稳定性,表面/界面张力) 和在外层核心移位实验中的性能.

主要成果:

表面活性剂FA278显示出高发泡体积 (920毫升) 和稳定性 (195秒半衰期).
开发的二氧化碳泡系统表现出极好的稳定性 (1335秒半衰期),低表面张力 (25.99 mN/m) 和低界面张力 (1.00 mN/m).
核心洪水实验显示,石油的增量回收率为11.09%,最终回收率为87.14%.

结论:

新型表面活性剂FA278和开发的二氧化碳泡系统对高温,低透性的水库有效.
该系统显著提高了石油回收能力,超出了水淹,二氧化碳淹和WAG等传统方法.
这项技术为在充满挑战的水库条件下提升石油回收提供了至关重要的技术支持.

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