Li Yuman, Altalbawy Farag M A, Rachchh Nikunj, Ramachandran T, Shankhyan Aman, Karthikeyan A, Thatoi Dhirendra Nath, Gupta Deepak, Al-Badkubi Mohammad R K M, Abduvalieva Dilsora, Sherzod Samim, Alam Mohammad Mahtab
School of Mechanical and Electrical Engineering, GongQing Institute of Science and Technology, Jiujiang, 332020, Jiangxi, China.
Department of Chemistry, University College of Duba, University of Tabuk, Tabuk, Saudi Arabia.
Sci Rep. 2025 May 29;15(1):18870. doi: 10.1038/s41598-025-03348-2.
Mitigating formation damage due to fines migration is crucial for maintaining reservoir productivity in enhanced oil recovery (EOR) processes. This research introduces a novel composite, Titanium dioxide nanoparticles coated with Saponin and Zirconium (TiO@Saponin/Zr(IV)), synthesized via a sol-gel method, to address this challenge, particularly in low salinity water injection scenarios. Characterization through FT-IR confirmed successful functionalization, indicated by the Zr-O band at 480 cm and saponin bands around 1030-1085 cm and 2919-2850 cm. Zeta potential measurements showed that in low salinity brine, quartz and kaolinite exhibited highly negative potentials of - 32 mV and - 45 mV, respectively, while TiO@Saponin/Zr(IV) displayed a positive potential of + 19 mV. Importantly, mixtures of quartz and kaolinite with TiO@Saponin/Zr(IV) in low salinity conditions resulted in moderated zeta potentials of + 3 mV and - 2 mV, indicating surface charge modulation. Core flooding experiments further validated the composite's effectiveness. Injecting high salinity water resulted in a minor permeability reduction from 90 to 78 mD, while low salinity water injection caused a drastic drop from 90 to 8 mD. However, with the introduction of 0.5 wt% TiO@Saponin/Zr(IV) in low salinity water, the permeability reduction was significantly controlled, decreasing from 90 to 85 mD. These quantitative results demonstrate that TiO@Saponin/Zr(IV) effectively mitigates fines migration by modifying surface charge and preserving permeability, offering a promising solution for formation damage control and enhanced oil recovery.
减轻因细颗粒运移造成的地层损害对于在强化采油（EOR）过程中维持油藏产能至关重要。本研究引入了一种新型复合材料，即通过溶胶 - 凝胶法合成的包覆有皂苷和锆的二氧化钛纳米颗粒（TiO@皂苷/Zr(IV)），以应对这一挑战，特别是在低盐度注水的情况下。通过傅里叶变换红外光谱（FT - IR）进行的表征证实了成功的功能化，480 cm处的Zr - O带以及1030 - 1085 cm和2919 - 2850 cm附近的皂苷带表明了这一点。zeta电位测量表明，在低盐度盐水中，石英和高岭土分别表现出 - 32 mV和 - 45 mV的高度负电位，而TiO@皂苷/Zr(IV)显示出 + 19 mV的正电位。重要的是，在低盐度条件下，石英和高岭土与TiO@皂苷/Zr(IV)的混合物导致zeta电位分别为 + 3 mV和 - 2 mV，表明表面电荷得到了调节。岩心驱替实验进一步验证了该复合材料的有效性。注入高盐度水导致渗透率略有降低，从90 mD降至78 mD，而注入低盐度水则导致渗透率急剧下降，从90 mD降至8 mD。然而，在低盐度水中引入0.5 wt%的TiO@皂苷/Zr(IV)后，渗透率降低得到了显著控制，从90 mD降至85 mD。这些定量结果表明，TiO@皂苷/Zr(IV)通过改变表面电荷和保持渗透率有效地减轻了细颗粒运移，为控制地层损害和提高采油率提供了一种有前景的解决方案。
