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A newmodel for permeability reduction rate due to calciumsulfate precipitation in sandstone cores

Tahmasebi, H. A ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.1615/JPorMedia.v13.i10.40
  3. Publisher: 2010
  4. Abstract:
  5. 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
  6. Keywords:
  7. Permeability reduction rate ; Brine solution ; Calcium sulfate ; Cross sectional area ; Dimensionless correlation ; Experimental data ; Formation damage ; Glass bead ; High pressure ; Initial permeability ; Kinetic reactions ; Low pressures ; Permeability reduction ; Porosity of porous medias ; Porous Media ; Precipitation kinetics ; Sand pack ; Sandstone cores ; Saturation index ; Sulfate ion ; Volume flow rate ; Calcium ; Driers (materials) ; Glass ; Granular materials ; Oil well drilling ; Porous materials ; Reaction rates ; Sandstone ; Data reduction
  8. Source: Journal of Porous Media ; Volume 13, Issue 10 , 2010 , Pages 911-922 ; 1091028X (ISSN)
  9. URL: http://www.dl.begellhouse.com/journals/49dcde6d4c0809db,2e4b8b774559243b,40c54af10b2b630d.html