Abstract: Device for dispersing a water-soluble polymer including a rotor equipped with knives, a fixed stator, over all or part of the periphery of the chamber, a ring fed by a secondary water circuit, characterised in that the rotor knives and the stator are made out of austeno-ferritic stainless steel and in that the stator comes in the form of a cylinder in the wall of which are cut vertical slits produced on part of the height of the wall, the slits having a width of between 150 and 700 micrometers.

Abstract: Device for dispersing a water-soluble polymer including a rotor equipped with knives, a fixed stator, over all or part of the periphery of the chamber, a ring fed by a secondary water circuit, characterised in that the rotor knives and the stator are made out of austeno-ferritic stainless steel and in that the stator comes in the form of a cylinder in the wall of which are cut vertical slits produced on part of the height of said wall, the slits having a width of between 150 and 700 micrometers.

Abstract: A process is provided for reducing the pressure for injecting a solution of water-soluble polymer from a given injection pump into various oil wells in a given field as a function of the fracturation pressure for each well. Between the injection pump and each well, a respective main volumetric pump is placed. The fracturation pressure of each well is detected with a respective manometer, and the flow rate of each volumetric pump is controlled, using a brake, as a function of detected fracturation pressure of the respective well.

Abstract: Enhanced oil recovery method consisting in continuously dissolving, in the injection water, a stable invert emulsion of acrylamide (co)polymer containing at least one inverting agent, and a water soluble polymer, whereby: in a first step, the emulsion is prediluted in a first static mixer to a (co)polymer concentration of at least 5 g/l, the difference of pressure between the mixer outlet and inlet being at least 2 bar, in a second step, the suspension from the first mixer is diluted in a second static mixer to a concentration corresponding to the injection concentration of the water in the well of between 500 and 3000 ppm, the difference of pressure between the mixer outlet and inlet being at least 1 bar.

Abstract: A method for dispersing a water-soluble polymer includes: metering and prewetting polymer with primary water; grinding and draining of the dispersed polymer in a chamber comprising a rotor and a stator; and providing a ring with perforations fed by a secondary water circuit on all or part of the periphery of the chamber for spraying of pressurized water on the blades of the stator.

Abstract: A method for dispersing a water-soluble polymer includes: metering and prewetting polymer with a primary water; grinding and draining of the dispersed polymer in a chamber comprising a rotor and a stator; and providing a ring with perforations fed by a secondary water circuit on all or part of the periphery of the chamber for spraying of pressurised water on the blades of the stator.

Abstract: Device for dispersing a water-soluble polymer comprising: a chamber for grinding and draining of the dispersed polymer comprising a rotor and a stator, and on all or part of the periphery of the chamber, a ring fed by a secondary water circuit. The ring communicates with the chamber for spraying of pressurized water on the blades of the stator. A method implementing the device is also provided.

Abstract: Installation for flocculation of water or sludge loaded with suspended matter comprising in succession: a polymer storage hopper, a polymer grinding device, and a line, pipe or other conveyor for transferring the polymer solution to the water or the sludge to be treated. The grinder device includes a wetting cone in which the polymer is poured, and at the bottom end of the cone: a chamber for grinding and removing the dispersed polymer comprising: a rotor, a stator, and a ring fed by a secondary water circuit. A method implementing the installation is also provided.

Abstract: A process is provided for reducing the pressure for injecting a solution of water-soluble polymer from a given injection pump into various oil wells in a given field as a function of the fracturation pressure for each well according to which, between the injection pump and each well, a main volumetric pump is placed, whose rate is controlled using a brake.

Abstract: Enhanced oil recovery method consisting in continuously dissolving, in the injection water, a stable invert emulsion of acrylamide (co)polymer containing at least one inverting agent, and a water soluble polymer, whereby: in a first step, the emulsion is prediluted in a first static mixer to a (co)polymer concentration of at least 5 g/l, the difference of pressure between the mixer outlet and inlet being at least 2 bar, in a second step, the suspension from the first mixer is diluted in a second static mixer to a concentration corresponding to the injection concentration of the water in the well of between 500 and 3000 ppm, the difference of pressure between the mixer outlet and inlet being at least 1 bar.

Abstract: Installation for enhanced oil recovery comprising in succession: a polymer storage hopper, a grinding device and a pressurized injection pump. The grinding device has a chamber for grinding and draining the dispersed polymer comprising a rotor and a stator, and on all or part of the periphery of the chamber, a ring fed by a secondary water circuit. The ring communicates with the chamber for spraying of pressurised water on the blades of the stator. A method implementing the installation is also provided.

Abstract: Installation for enhanced oil recovery comprising in succession: a polymer storage hopper, a grinding device, a dissolution/maturation tank for the dispersed polymer, and a pump for transferring pressurized polymer solution in the pipeline conveying the injection water for introducing the mixture of polymer and injection water into a well. The grinding device has a chamber for grinding and draining the dispersed polymer comprising a rotor and a stator, and on all or part of the periphery of the chamber, a ring fed by a secondary water circuit. The ring communicates with the chamber for spraying of pressurized water on the blades of the stator. A method implementing the installation is also provided.

Abstract: Installation for enhanced oil recovery comprising in succession: a polymer storage hopper, a grinding device, a dissolution/maturation tank for the dispersed polymer, and a pump for transferring pressurized polymer solution in the pipeline conveying the injection water for introducing the mixture of polymer and injection water into a well. The grinding device has a chamber for grinding and draining the dispersed polymer comprising a rotor and a stator, and on all or part of the periphery of the chamber, a ring fed by a secondary water circuit. The ring communicates with the chamber for spraying of pressurised water on the blades of the stator. A method implementing the installation is also provided.

Abstract: Installation for flocculation of water or sludge loaded with suspended matter comprising in succession: a polymer storage hopper, a polymer grinding device, and a line, pipe or other conveyor for transferring the polymer solution to the water or the sludge to be treated. The grinder device includes a wetting cone in which the polymer is poured, and at the bottom end of the cone: a chamber for grinding and removing the dispersed polymer comprising: a rotor, a stator, and a ring fed by a secondary water circuit. A method implementing the installation is also provided.

Abstract: Device for dispersing a water-soluble polymer comprising: a chamber for grinding and draining of the dispersed polymer comprising a rotor and a stator, and on all or part of the periphery of the chamber, a ring fed by a secondary water circuit. The ring communicates with the chamber for spraying of pressurised water on the blades of the stator. A method implementing the device is also provided.

Abstract: Installation for enhanced oil recovery comprising in succession: a polymer storage hopper, a grinding device and a pressurized injection pump. The grinding device has a chamber for grinding and draining the dispersed polymer comprising a rotor and a stator, and on all or part of the periphery of the chamber, a ring fed by a secondary water circuit. The ring communicates with the chamber for spraying of pressurised water on the blades of the stator. A method implementing the installation is also provided.