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Information Seminar Paper

Title

MICROSCOPIC INTERFACE STUDY OF IMBIBITION RATE EFFECT ON DISPLACEMENT PATTERN IN A GLASS MICROMODEL

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Abstract

 PORE SCALE STUDY OF DISPLACEMENT PROCESSES IS A FUNDAMENTAL LIGHTENING STEP TO UNDERSTAND AND INTERPRET LARGER SCALE DISPLACEMENT BEHAVIORS. IN THIS DIRECTION, SERIES OF IMBIBITION DISPLACEMENTS AT DIFFERENT FLOW RATES ARE PERFORMED TO OBSERVE AND ANALYZE THE GEOMETRICAL DIVERSITY OF FLOW PATTERNS IN TERMS OF LOCAL SATURATION, TOTAL SATURATION, AND FRACTAL CHARACTERISTICS OF THESE PROCESSES. A TWO DIMENSIONAL WATER-WET MICROMODEL MANUFACTURED BY NANO-PHOTOLITHOGRAPHY TECHNOLOGY WAS USED FOR THE EXPERIMENTS. SATURATION ANALYSIS INDICATES A DECREASING TREND OF BREAKTHROUGH TIME AND TOTAL WETTING PHASE SATURATION AT BREAKTHROUGH TIME WITH INCREASE OF CAPILLARY NUMBER. THIS IS ATTRIBUTED TO THE FRONT INSTABILITY WHICH INCREASES AT HIGHER IMBIBITION RATES. FRACTAL ANALYSIS OF DISPLACEMENT PROCESSES AT BREAKTHROUGH TIME CONFIRMS THIS FINDING. OBSERVATIONS SHOW A DECREASING TREND OF SURFACE FRACTAL DIMENSION AND INCREASING TREND OF FRONT FRACTAL DIMENSION WITH INJECTION RATE.

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