Patent ID: 7814977

Claim:
Installation for enhanced oil recovery comprising in succession: a storage hopper for water-soluble polymer having a standard grain size distribution, a grinding device for dispersing the polymer, comprising: a wetting cone in which the polymer is metered, said cone being connected to a primary water inlet circuit at a bottom end of the cone: a chamber for grinding and draining the dispersed polymer comprising: a rotor driven by a motor and equipped with knives, a fixed stator having blades, on all or part of a periphery of a chamber, a ring fed by a secondary water circuit, the ring communicating with the chamber for spraying of pressurised water on the blades of the stator and thereby releasing ground and swollen polymer on a surface of said blades; a pump for pressurized injection of polymer suspension into a pipeline conveying injection water and introducing a mixture of polymer and injection water into a well, installation being without additional dissolution tanks.