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June 10, 2024CapillarityOpen Access

Visualizing oil displacement by nanofluids at pore scale: A concentration-dependent nanofluid spreading induced by structural disjoining pressure

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Authors

TAThakheru AkamineChiang Mai UniversityTTTeerapat TosuaiUniversity of PetroleumRRRomal RamadhanPlanetary Science Institute

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Implication

Experimental visualization demonstrates concentration-dependent oil displacement in a water-wet micromodel, highlighting structural disjoining pressure for enhanced oil recovery.

Key Points

  • Crude oil displacement efficiency increases with nanofluid concentration, and structural disjoining pressure drives stable film spreading while suppressing capillary snap-off.
  • Displacement efficiency reached 43.1% at 500 ppm nanofluids, whereas low concentrations trapped over 300 oil ganglia due to wetting layer swelling and snap-off events.
  • Assessment using a water-wet borosilicate micromodel demonstrates pore scale immiscible fluid displacement, highlighting applicability to enhanced oil recovery and carbon storage.

Cite This Study

Akamine et al. (2024) studied this question.

synapsesocial.com/papers/68e65665b6db6435875e50b4https://doi.org/10.46690/capi.2024.07.03
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