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Insights into the Effects of Salinity on the Transport Behavior of Polymer-Enhanced Branched-Preformed Particle Gel Suspension in Porous Media
Energy & Fuels ( IF 5.2 ) Pub Date : 2021-01-04 , DOI: 10.1021/acs.energyfuels.0c03159 Zongyang Li 1, 2 , Yefei Wang 1 , Hong He 3 , Fuqing Yuan 2 , Haocheng Liu 3 , Yuqiu Chen 3
Energy & Fuels ( IF 5.2 ) Pub Date : 2021-01-04 , DOI: 10.1021/acs.energyfuels.0c03159 Zongyang Li 1, 2 , Yefei Wang 1 , Hong He 3 , Fuqing Yuan 2 , Haocheng Liu 3 , Yuqiu Chen 3
Affiliation
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The branched-preformed particle gel (B-PPG) is a novel viscoelastic particle gel used for improving sweep efficiency and enhancing oil recovery in a heterogeneous mature reservoir. To improve the performance of B-PPG, partially hydrolyzed polyacrylamide (HPAM) is used to increase the viscosity and to prepare a homogeneous B-PPG suspension. Although some encouraging progress has been made in the application of polymer-enhanced B-PPG suspension, its transport behavior in porous media is still unclear, which is crucial for its application in enhanced oil recovery (EOR) in a heterogeneous reservoir. Due to the complex reservoir condition of different brine salinities, the physiochemical property of polymer-enhanced B-PPG suspension as well as its transport behavior in porous media can be affected, which may lead to unsatisfactory results. Understanding the effects of salinity on the transport behavior of polymer-enhanced B-PPG suspension in porous media is of vital importance in figuring out the flow behavior and improving the sweep efficiency in the mature reservoir. In this study, the effects of salinity on the swelling ratio, particle size, viscosity property, and suspension stability of B-PPG and polymer-enhanced B-PPG suspension were studied. Meanwhile, sand pack flow experiments were conducted to study the transport behavior of polymer-enhanced B-PPG suspension in porous media. The results show that when the brine salinity increases, the swelling ratio and particle size of B-PPG, as well as the viscosity and the suspension stability of polymer-enhanced B-PPG suspension all demonstrate a decreasing trend. In the range of 3550–10 651 mg·L–1, as the brine salinity increases, the resistance factor decreases and the transportation of polymer-enhanced B-PPG suspension in porous media becomes easier. In this case, the ratio of swollen B-PPG particle diameter to the pore throat diameter turns out to be the determining factor that governs the transport behavior. However, when the brine salinity is higher than 10 651 mg·L–1, with the increase of brine salinity, the resistance factor increases. As a result, the effects of viscosity and suspension stability of polymer-enhanced B-PPG suspension become more prominent.
中文翻译：
盐度对多孔介质中聚合物增强的支链预成型颗粒凝胶悬浮液迁移行为的影响的见解
支链预成型颗粒凝胶（B-PPG）是一种新型的粘弹性颗粒凝胶，用于提高非均质成熟油藏的波及效率和油采收率。为了提高B-PPG的性能，使用了部分水解的聚丙烯酰胺（HPAM）来增加粘度并制备均匀的B-PPG悬浮液。尽管在聚合物增强的B-PPG悬浮液的应用方面取得了令人鼓舞的进展，但其在多孔介质中的传输行为仍然不清楚，这对于其在非均质油藏中提高采收率（EOR）的应用至关重要。由于不同盐水盐度的复杂储层条件，会影响聚合物增强的B-PPG悬浮液的理化性质及其在多孔介质中的传输行为，这可能会导致结果不理想。理解盐度对聚合物增强的B-PPG悬浮液在多孔介质中的运移行为的影响，对于弄清流动行为和提高成熟油藏的波及效率至关重要。在这项研究中，研究了盐度对B-PPG和聚合物增强的B-PPG悬浮液的溶胀率，粒径，粘度性能和悬浮液稳定性的影响。同时，进行了沙包流动实验，研究了聚合物增强的B-PPG悬浮液在多孔介质中的传输行为。结果表明，当盐水盐度增加时，B-PPG的溶胀率和粒径，聚合物增强的B-PPG悬浮液的粘度和悬浮液稳定性均呈下降趋势。在3550-10651 mg·L的范围内 研究了B-PPG的悬浮稳定性和聚合物增强的B-PPG悬浮液。同时，进行了沙包流动实验，研究了聚合物增强的B-PPG悬浮液在多孔介质中的传输行为。结果表明，当盐水盐度增加时，B-PPG的溶胀率和粒径，聚合物增强的B-PPG悬浮液的粘度和悬浮液稳定性均呈下降趋势。在3550-10651 mg·L的范围内 研究了B-PPG的悬浮稳定性和聚合物增强的B-PPG悬浮液。同时，进行了沙包流动实验，研究了聚合物增强的B-PPG悬浮液在多孔介质中的传输行为。结果表明，当盐水盐度增加时，B-PPG的溶胀率和粒径，聚合物增强的B-PPG悬浮液的粘度和悬浮液稳定性均呈下降趋势。在3550-10651 mg·L的范围内 以及聚合物增强的B-PPG悬浮液的粘度和悬浮液稳定性均呈下降趋势。在3550-10651 mg·L的范围内 以及聚合物增强的B-PPG悬浮液的粘度和悬浮液稳定性均呈下降趋势。在3550-10651 mg·L的范围内–1，随着盐水盐度的增加，电阻系数减小，聚合物增强的B-PPG悬浮液在多孔介质中的运输变得更容易。在这种情况下，溶胀的B-PPG粒径与孔喉直径之比被证明是决定运输行为的决定因素。但是，当盐水盐度高于10 651 mg·L –1时，随着盐水盐度的增加，阻力系数增加。结果，聚合物增强的B-PPG悬浮液的粘度和悬浮液稳定性的影响变得更加突出。
更新日期：2021-01-21
中文翻译：
盐度对多孔介质中聚合物增强的支链预成型颗粒凝胶悬浮液迁移行为的影响的见解
支链预成型颗粒凝胶（B-PPG）是一种新型的粘弹性颗粒凝胶，用于提高非均质成熟油藏的波及效率和油采收率。为了提高B-PPG的性能，使用了部分水解的聚丙烯酰胺（HPAM）来增加粘度并制备均匀的B-PPG悬浮液。尽管在聚合物增强的B-PPG悬浮液的应用方面取得了令人鼓舞的进展，但其在多孔介质中的传输行为仍然不清楚，这对于其在非均质油藏中提高采收率（EOR）的应用至关重要。由于不同盐水盐度的复杂储层条件，会影响聚合物增强的B-PPG悬浮液的理化性质及其在多孔介质中的传输行为，这可能会导致结果不理想。理解盐度对聚合物增强的B-PPG悬浮液在多孔介质中的运移行为的影响，对于弄清流动行为和提高成熟油藏的波及效率至关重要。在这项研究中，研究了盐度对B-PPG和聚合物增强的B-PPG悬浮液的溶胀率，粒径，粘度性能和悬浮液稳定性的影响。同时，进行了沙包流动实验，研究了聚合物增强的B-PPG悬浮液在多孔介质中的传输行为。结果表明，当盐水盐度增加时，B-PPG的溶胀率和粒径，聚合物增强的B-PPG悬浮液的粘度和悬浮液稳定性均呈下降趋势。在3550-10651 mg·L的范围内 研究了B-PPG的悬浮稳定性和聚合物增强的B-PPG悬浮液。同时，进行了沙包流动实验，研究了聚合物增强的B-PPG悬浮液在多孔介质中的传输行为。结果表明，当盐水盐度增加时，B-PPG的溶胀率和粒径，聚合物增强的B-PPG悬浮液的粘度和悬浮液稳定性均呈下降趋势。在3550-10651 mg·L的范围内 研究了B-PPG的悬浮稳定性和聚合物增强的B-PPG悬浮液。同时，进行了沙包流动实验，研究了聚合物增强的B-PPG悬浮液在多孔介质中的传输行为。结果表明，当盐水盐度增加时，B-PPG的溶胀率和粒径，聚合物增强的B-PPG悬浮液的粘度和悬浮液稳定性均呈下降趋势。在3550-10651 mg·L的范围内 以及聚合物增强的B-PPG悬浮液的粘度和悬浮液稳定性均呈下降趋势。在3550-10651 mg·L的范围内 以及聚合物增强的B-PPG悬浮液的粘度和悬浮液稳定性均呈下降趋势。在3550-10651 mg·L的范围内–1，随着盐水盐度的增加，电阻系数减小，聚合物增强的B-PPG悬浮液在多孔介质中的运输变得更容易。在这种情况下，溶胀的B-PPG粒径与孔喉直径之比被证明是决定运输行为的决定因素。但是，当盐水盐度高于10 651 mg·L –1时，随着盐水盐度的增加，阻力系数增加。结果，聚合物增强的B-PPG悬浮液的粘度和悬浮液稳定性的影响变得更加突出。
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