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在高温高度水库条件下对自适应性加厚聚合物的性能进行实验性调查

Chuangchuang Qi¹, Mohamed Haroun¹, Md Motiur Rahman¹

¹Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates.

|July 17, 2023

概括

与部分化聚烯胺 (HPAM) 相比,剪切加厚聚合物 (SAP) 提供了更好的油位移效率和减少形成损伤在恶劣的水库中. 在工程水中制备的SAP显示出更好的性能,特别是在较低的盐度和硬度下.

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
聚合物科学聚合物科学

背景情况:

高温和高盐度的水库对传统的聚合物泛滥构成挑战,原因是聚合物降解和形成损伤.
部分化聚烯胺 (HPAM) 是常用的,但可能容易受到恶劣的水库条件的影响.
剪切加厚聚合物 (SAP) 在这种条件下为提高性能提供了潜在的替代品.

研究的目的:

开发使用剪切加厚聚合物 (SAP) 的聚合物浸工作流程,以减轻高温,高盐度环境中的降解和形成损伤.
评估SAP与工程水的兼容性,并将其性能与HPAM进行比较.
研究各种因素 (聚合物度,盐度,硬度) 对SAP性能和油位效率 (DE) 的影响.

主要方法:

岩石和流体性质的表征,以及形成损伤测试,以选择最佳的聚合物配方.
在储条件下进行了核心洪水实验,以评估油位移效率 (DE).
对SAP与工程水的兼容性进行系统测试,分析在不同盐度和硬度下的风学,聚合物保留和DE.

主要成果:

与HPAM相比,SAP解决方案的形成损伤较低,总体油DE较高,特别是在注射的初始阶段.
最高的DE (69.04%) 是通过使用在低盐度盐形成条件下在稀释的,硬度剥离的海水中制备的SAP来实现的.
基础液体的盐度和硬度降低减少了形成损伤,硬度剥离具有更显著的效果.

结论:

剪切加厚聚合物 (SAP) 在恶劣的水库条件下比HPAM具有更好的石油回收潜力和更好的与工程水的兼容性.
工程水中的较低盐度和硬度进一步提高了SAP解决方案的EOR能力.
这项研究提供了SAP性能的实验证据和机制见解,为试点规模应用奠定了基础.

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