Visualizing in-situ emulsification in porous media during surfactant flooding: A microfluidic study

Zhao, Xiaowen; Feng, Yujun; Liao, Guangzhi; Liu, Weidong

doi:10.1016/j.jcis.2020.06.019

Cited by 82 publications

(36 citation statements)

References 44 publications

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“…Emulsification has been widely observed in a large number of laboratory and field tests. The higher oil recoveries of emulsion flooding in these cases indicate emulsification plays a positive role for further improving oil recoveries [11][12][13][14].…”

Section: Introductionmentioning

confidence: 93%

Effect of Emulsification on Enhanced Oil Recovery during Surfactant/Polymer Flooding in the Homogeneous and Heterogeneous Porous Media

Wang

Zhang²,

Yuan³

et al. 2021

Geofluids

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Surfactant polymer (SP) flooding has become an important enhanced oil recovery (EOR) technique for the high-water cut mature oilfield. Emulsification in the SP flooding process is regarded as a powerful mark for the successful application of SP flooding in the filed scale. People believe emulsification plays a positive role in EOR. This paper uses one-dimensional homogenous core flooding experiments and parallel core flooding experiments to examine the effect of emulsification on the oil recoveries in the SP flooding process. 0.3 pore volume (PV) of emulsions which are prepared using ultralow interface intension (IFT) SP solution and crude oil with stirring method was injected into core models to mimic the emulsification process in SP flooding, followed by 0.35 PV of SP flooding to flood emulsions and remaining oil. The other experiment was preformed 0.65 PV of SP flooding as a contrast. We found SP flooding can obviously enhance oil recovery factor by 25% after water flooding in both homogeneous and heterogeneous cores. Compared to SP flooding, emulsification can contribute an additional recovery factor of 3.8% in parallel core flooding experiments. But there is no difference on recoveries in homogenous core flooding experiments. It indicates that the role of emulsification during SP flooding will be more significant for oil recoveries in a heterogeneous reservoir rather than a homogeneous reservoir.

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Section: Introductionmentioning

confidence: 93%

Effect of Emulsification on Enhanced Oil Recovery during Surfactant/Polymer Flooding in the Homogeneous and Heterogeneous Porous Media

Wang

Zhang²,

Yuan³

et al. 2021

Geofluids

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“…Microfluidic studies using rock micromodels are becoming an alternative to core flooding [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ]. The development of microfluidics is associated with a significant reduction in the size of devices and the improvement of their technical characteristics.…”

Section: Introductionmentioning

confidence: 99%

Microfluidic Study of the Effect of Nanosuspensions on Enhanced Oil Recovery

et al. 2022

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The essential advantages of microfluidic studies are the excellent visualization of the processes of oil displacement from the porous medium model, simple cleaning, and the possibility of the repeated use of the microfluidic chip. The present article deals with the process of oil displacement by suspension flooding using a microfluidic chip, simulating a porous medium, and the suspensions of silicon dioxide nanoparticles (22 nm). The mass concentration of nanoparticles in suspensions ranged from 0.1 to 2 wt%. Five mass concentrations (0.125 wt%, 0.25 wt%, 0.5 wt%, 1 wt% and 2 wt%) were considered. The article presents the experimental photographs of the oil displacement process by water and SiO2 suspension. It is shown that, with the increasing concentration of nanoparticles, the oil recovery factor increases. A significant effect is observed at 0.5 wt% concentration of nanoparticles. It is shown that the increase in oil recovery during flooding by SiO2 suspension with the maximum concentration was 16%.

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“…Microfluidic studies using microporous rock models are becoming an alternative to conventional core flooding. [6][7]. Microfluidics (μικρός (micros) -small, fluidis -fluid) is an interdisciplinary science that describes the behavior of small (volume of the order of micro-and nanoliter) flows of liquids.…”

Section: Introductionmentioning

confidence: 99%

Displacement of oil by SiO₂-nanofluid from a microporous medium: microfluidic experiments

Pryazhnikov

Минаков

Pryazhnikov

et al. 2022

J. Phys.: Conf. Ser.

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Visualizing in-situ emulsification in porous media during surfactant flooding: A microfluidic study

Cited by 82 publications

References 44 publications

Effect of Emulsification on Enhanced Oil Recovery during Surfactant/Polymer Flooding in the Homogeneous and Heterogeneous Porous Media

Effect of Emulsification on Enhanced Oil Recovery during Surfactant/Polymer Flooding in the Homogeneous and Heterogeneous Porous Media

Microfluidic Study of the Effect of Nanosuspensions on Enhanced Oil Recovery

Displacement of oil by SiO₂-nanofluid from a microporous medium: microfluidic experiments

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Visualizing in-situ emulsification in porous media during surfactant flooding: A microfluidic study

Cited by 82 publications

References 44 publications

Effect of Emulsification on Enhanced Oil Recovery during Surfactant/Polymer Flooding in the Homogeneous and Heterogeneous Porous Media

Effect of Emulsification on Enhanced Oil Recovery during Surfactant/Polymer Flooding in the Homogeneous and Heterogeneous Porous Media

Microfluidic Study of the Effect of Nanosuspensions on Enhanced Oil Recovery

Displacement of oil by SiO2-nanofluid from a microporous medium: microfluidic experiments

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Displacement of oil by SiO₂-nanofluid from a microporous medium: microfluidic experiments