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用于提高采收率的氨基官能化纳米二氧化硅与丙烯酰胺基聚合物的水性混合物。

Aqueous hybrids of amino-functionalized nanosilica and acrylamide-based polymer for enhanced oil recovery.

作者信息

Cao Jie, Song Tao, Zhu Yuejun, Wang Xiujun, Wang Shanshan, Yu Jingcheng, Ba Yin, Zhang Jian

机构信息

School of Petroleum Engineering, China University of Petroleum (East China) Qingdao 266580 China

CNOOC Research Institute Beijing 100027 China

出版信息

RSC Adv. 2018 Nov 13;8(66):38056-38064. doi: 10.1039/c8ra07076h. eCollection 2018 Nov 7.

DOI:10.1039/c8ra07076h
PMID:35558622
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9089851/
Abstract

Amino-functionalized nanosilica (ANS) was prepared using nanosilica (NS) and 3-aminopropyltriethoxysilane (APTES) aiming to reinforce the interaction between nanoparticles and polymer molecules. The copolymer of acrylamide, 2-acrylamido-2-methyl-1-propane sulfonic acid (PM), and four ANS samples with different NS to APTES ratios were synthesized. A series of nanoparticle/polymer hybrid systems were fabricated by introducing NS or ANS suspension into PM aqueous solution. The rheological properties and surface activities of these hybrid systems were studied in comparison with PM. The results indicate that the salt-tolerance and heat-resistance properties of PM solution were improved by the introduction of ANS particles. Moreover, the structures of ANS samples have a significant effect on the effectiveness of the nanoparticles due to the fact that the amine group density on the ANS surface can affect the strength of intermolecular interaction between nanoparticles and polymer molecules. Additionally, the better ability of the ANS sample with proper amine group density showed in reducing the oil/water interfacial tension over NS and other ANS samples made it a more promising chemical for enhancing oil recovery. The results from core flooding tests show that the PM/ANS system has the greatest oil recovery factor (16.30%), while the values for PM/NS and PM are 10.84% and 6.00%, respectively.

摘要

使用纳米二氧化硅（NS）和3-氨丙基三乙氧基硅烷（APTES）制备了氨基功能化纳米二氧化硅（ANS），旨在增强纳米颗粒与聚合物分子之间的相互作用。合成了丙烯酰胺、2-丙烯酰胺基-2-甲基-1-丙烷磺酸（PM）的共聚物以及四种具有不同NS与APTES比例的ANS样品。通过将NS或ANS悬浮液引入PM水溶液中制备了一系列纳米颗粒/聚合物杂化体系。与PM相比，研究了这些杂化体系的流变学性质和表面活性。结果表明，引入ANS颗粒提高了PM溶液的耐盐性和耐热性。此外，ANS样品的结构对纳米颗粒的有效性有显著影响，因为ANS表面的胺基密度会影响纳米颗粒与聚合物分子之间分子间相互作用的强度。此外，具有适当胺基密度的ANS样品在降低油/水界面张力方面比NS和其他ANS样品表现出更好的能力，这使其成为提高采收率更有前景的化学品。岩心驱替试验结果表明，PM/ANS体系的采收率最高（16.30%），而PM/NS和PM体系的采收率分别为10.84%和6.00%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4507/9089851/40f7b03c38a6/c8ra07076h-f10.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4507/9089851/357b4589703f/c8ra07076h-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4507/9089851/96dca61f0cc2/c8ra07076h-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4507/9089851/40f7b03c38a6/c8ra07076h-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4507/9089851/7fbff52143a5/c8ra07076h-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4507/9089851/6711f8050003/c8ra07076h-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4507/9089851/357b4589703f/c8ra07076h-f8.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4507/9089851/40f7b03c38a6/c8ra07076h-f10.jpg

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