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Flow Behavior and Mechanism Insights into Nanoparticle-Surfactant-Stabilized Nitrogen Foam for Enhanced Oil Recovery in the Mature Waterflooding Reservoir
ACS Omega ( IF 3.7 ) Pub Date : 2024-08-15 , DOI: 10.1021/acsomega.4c06023 Junchi Lu 1
ACS Omega ( IF 3.7 ) Pub Date : 2024-08-15 , DOI: 10.1021/acsomega.4c06023 Junchi Lu 1
Affiliation
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To solve the problem of poor stability and low enhanced oil recovery efficiency of conventional foam, nanoparticle-surfactant-stabilized nitrogen foam was prepared, and the influence of temperature, salinity, oil content, and pressure on foam performance was systematically investigated. Then, the flow behavior of conventional foam and nanoparticle-surfactant-stabilized foam in porous media was studied. Parallel sand pack flooding and visualization microflooding experiments were performed to investigate the enhanced oil recovery ability of nanoparticle-surfactant-stabilized foam from core-scale to pore-scale. Results showed that the nanoparticles can improve foam performance. When the temperature increases from 60 to 100 °C, the foam volume and foam half-life of nanoparticle-surfactant-stabilized foam decrease by 20 and 36%, respectively. The nanoparticle-surfactant-stabilized foam has a good salt resistance. The oil content limit value of the foam performance is 15%. With the increase of pressure, the foaming performance and foam stability are enhanced obviously. Compared with conventional surfactant-stabilized foam, the nanoparticle-surfactant-stabilized foam can have better plugging and expansion of the swept volume capacity. The micromodel flooding results are consistent with the parallel sand pack flooding results. Compared with conventional surfactant stabilized foam, nanoparticle-surfactant-stabilized foam has better enhanced oil recovery ability than conventional surfactant-stabilized foam due to its higher foaming ability, foam stability, and sweep efficiency improvement ability.
中文翻译：
纳米颗粒表面活性剂稳定氮气泡沫在老水驱油藏中提高采收率的流动行为和机理研究
针对常规泡沫稳定性差、提高采收率低的问题，制备了纳米颗粒表面活性剂稳定氮气泡沫，系统研究了温度、盐度、含油量和压力对泡沫性能的影响。然后，研究了常规泡沫和纳米颗粒表面活性剂稳定泡沫在多孔介质中的流动行为。进行并行砂填充驱和可视化微驱实验，以研究纳米颗粒表面活性剂稳定泡沫从岩心尺度到孔隙尺度的提高采收率的能力。结果表明纳米颗粒可以改善泡沫性能。当温度从60℃升高到100℃时，纳米颗粒表面活性剂稳定泡沫的泡沫体积和泡沫半衰期分别减少20%和36%。纳米粒子表面活性剂稳定泡沫具有良好的耐盐性。泡沫性能的含油量限值为15%。随着压力的增加，发泡性能和泡沫稳定性明显增强。与常规表面活性剂稳定泡沫相比，纳米颗粒表面活性剂稳定泡沫具有更好的堵漏和膨胀波及体积能力。微模型驱油结果与平行充砂驱油结果一致。与常规表面活性剂稳定泡沫相比，纳米颗粒表面活性剂稳定泡沫由于具有更高的起泡能力、泡沫稳定性和波及效率提高能力，因此比常规表面活性剂稳定泡沫具有更好的提高采收率的能力。
更新日期：2024-08-15
中文翻译：
纳米颗粒表面活性剂稳定氮气泡沫在老水驱油藏中提高采收率的流动行为和机理研究
针对常规泡沫稳定性差、提高采收率低的问题，制备了纳米颗粒表面活性剂稳定氮气泡沫，系统研究了温度、盐度、含油量和压力对泡沫性能的影响。然后，研究了常规泡沫和纳米颗粒表面活性剂稳定泡沫在多孔介质中的流动行为。进行并行砂填充驱和可视化微驱实验，以研究纳米颗粒表面活性剂稳定泡沫从岩心尺度到孔隙尺度的提高采收率的能力。结果表明纳米颗粒可以改善泡沫性能。当温度从60℃升高到100℃时，纳米颗粒表面活性剂稳定泡沫的泡沫体积和泡沫半衰期分别减少20%和36%。纳米粒子表面活性剂稳定泡沫具有良好的耐盐性。泡沫性能的含油量限值为15%。随着压力的增加，发泡性能和泡沫稳定性明显增强。与常规表面活性剂稳定泡沫相比，纳米颗粒表面活性剂稳定泡沫具有更好的堵漏和膨胀波及体积能力。微模型驱油结果与平行充砂驱油结果一致。与常规表面活性剂稳定泡沫相比，纳米颗粒表面活性剂稳定泡沫由于具有更高的起泡能力、泡沫稳定性和波及效率提高能力，因此比常规表面活性剂稳定泡沫具有更好的提高采收率的能力。
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