The process of selective Reduction and controlled the permebilidad on Water Oil in high permeability formations

摘要

A process is described for Selective and controlled reduction of the Water Oil relative permeability in high permeability formations, with almost no reduction in permeability to oil.The process comprises of Sandstone Reservoir Rocks, for a First layer of cationic Polymer, followed by a Space charge of brine and a Second Polymer Layer formed of a suspension of Anionic Polymer and a nonionic or Anionic Microgel, being this configuration option Onalmente repeated significantly increases the thickness of the layers.Allowing the use of the process for High permeabilities. For Dolomitic Limestone Rocks, the first layer is the second Anionic Polymer and a cationic Polymer microgel suspension / cationic or nonionic.