SIMULATION STUDY OF PORE SCALE MULTIPHASE IMBIBITION FLOW IN BEREA SANDSTONE USING COLOR GRADIENT LATTICE BOLTZMANN METHOD

• Main Author: MAYDIKA ASLAM (NIM : 22216008), BILLAL
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/26107
• Institution: Institut Teknologi Bandung

This study demonstrate a multiphase flow simulation under imbibition process <br /> <br /> (water displacing oil) in three dimensions using Color Gradient Lattice Boltzmann <br /> <br /> Method (CG-LBM). Flow domain used in the simulation is pore structure image of <br /> <br /> Berea sandstone core plug obtained from Micro-CT scan with 7 micron per voxel <br /> <br /> resolution. Input parameters used for simulation which represents fluid-fluid <br /> <br /> interaction and fluid-solid interaction are derived from laboratory measurements. <br /> <br /> Recovery factor to pore volume of water injected profile from simulation prediction <br /> <br /> result will be compared against coreflood test result to evaluate the accuracy of <br /> <br /> CG-LBM as prediction tool for coreflood experiment. In order to reduce <br /> <br /> computational cost, flow simulation will be done only in representative volume <br /> <br /> element (RVE) from whole scale of core plug pore images. Determination of the <br /> <br /> representative volume element size is done based on fluid saturation distribution <br /> <br /> interpreted from Micro-CT scan and sensitivity analysis of the effect of sample size <br /> <br /> used in the simulation. <br /> <br /> After the validation process is carried out, imbibition process simulation is done <br /> <br /> under various values of capillary number and mobility ratio to study the <br /> <br /> displacement pattern occurred. The result of this study is expected to deliver an <br /> <br /> alternative method to predict microscopic displacement efficiency in sandstone.