Publicou 12 edições por ano
ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508
Indexed in
A NEW MODEL FOR PERMEABILITY REDUCTION RATE DUE TO CALCIUM SULFATE PRECIPITATION IN SANDSTONE CORES
RESUMO
In this work, a reliable dimensionless correlation is proposed for prediction of permeability reduction rate in porous media, which is verified by experimental data obtained in this work in glass bead and sand pack as well as the core data from the literature. Although this correlation is based on the data which were obtained in our work in glass bead and sand-packed media at low pressure, it shows considerable flexibility to match with the extracted data for sandstone cores at high pressure, various flow rates, different temperatures and concentrations of calcium, and sulfate ions in brine solutions. In addition, a novel relationship for predicting the rate of precipitation of CaSO4 in porous media along with a modification for kinetic reaction rate is developed which is a function of initial permeability, initial porosity of porous media, volume flow rate, saturation index of injected solution, temperature, and cross-sectional area of porous media.
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