Experimental Study on Matched Particle Size and Elastic Modulus of Preformed Particle Gel for Oil Reservoirs
Abstract
:1. Introduction
2. Experimental Method
2.1. Materials
2.2. Sand-Pack-Model Displacement Experiment
2.3. Glass-Etched-Model Oil Displacement Experiment
3. Results and Analyses
3.1. Matching between PPG and Reservoir Permeability
3.2. Oil Displacement Performance of Matching PPG
4. Conclusions
- (1)
- For a given reservoir with a certain permeability, a PPG with excessively small size and elastic modulus has poor capacity to increase flow resistance and reduce water channeling. A PPG with excessively large size and elastic modulus may cause permanent plugging and irreversible impairment to the reservoirs. The larger the reservoir permeability is, the larger the best matched PPG size and elastic modulus needed are.
- (2)
- The best matched PPG size and reservoir permeability have a positive logarithmic relationship, and the correlation coefficient reaches over 98%. Microscopic visualization experiments using a glass etching model prove that a PPG of 60–80 mesh and 2–4 Pa selected according to the logarithmic relationship can increase the sweeping efficiency by as much as 55% compared with water flooding for a reservoir with a permeability of 2624 × 10−3 μm2.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
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Zhou, K.; Wu, D.; An, Z. Experimental Study on Matched Particle Size and Elastic Modulus of Preformed Particle Gel for Oil Reservoirs. Gels 2022, 8, 506. https://doi.org/10.3390/gels8080506
Zhou K, Wu D, An Z. Experimental Study on Matched Particle Size and Elastic Modulus of Preformed Particle Gel for Oil Reservoirs. Gels. 2022; 8(8):506. https://doi.org/10.3390/gels8080506
Chicago/Turabian StyleZhou, Kang, Dejun Wu, and Zhibin An. 2022. "Experimental Study on Matched Particle Size and Elastic Modulus of Preformed Particle Gel for Oil Reservoirs" Gels 8, no. 8: 506. https://doi.org/10.3390/gels8080506