Abstract: A device for dispersing a water-soluble polymer includes a primary water inlet circuit that feeds an overflow, at the bottom end of the cone, an assembly including a chamber for grinding and draining the dispersed polymer, having a rotor driven by a motor provided with knives, a stator, over all or part of the periphery of the chamber, a ring fed by a secondary water circuit, the ring communicating with the chamber by way of slots for spraying pressurized water onto the stator The slots of the stator and/or the knives of the rotor are tilted at an angle of between 20° and 80° relative to the horizontal plane of the stator and the lateral face of the blade next to the stator is curved in such a way as to make the distance separating the two components substantially constant.

Abstract: Device that can be used in an enhanced oil recovery method by injection of a solution of water soluble polymer and brine having a viscosity below 1000 cps that includes a mixer, and preferably a static mixer, capable of homogenizing the solution on-line; a device capable of measuring the viscosity of the homogenized solution, continuously, downstream of the solution injection pump, at a pressure below or equal to 250 bars, and preferably between 50 and 250 bars, and at a temperature below or equal to 120° C., and preferably between 40 and 120° C., by measuring a pressure drop in a calibrated tube, at a constant rate of flow.

Abstract: A device for dispersing a water-soluble polymer includes a primary water inlet circuit that feeds an overflow, at the bottom end of the cone, an assembly including a chamber for grinding and draining the dispersed polymer, having a rotor driven by a motor provided with knives, a stator, over all or part of the periphery of the chamber, a ring fed by a secondary water circuit, the ring communicating with the chamber by way of slots for spraying pressurized water onto the stator The slots of the stator and/or the knives of the rotor are tilted at an angle of between 20° and 80° relative to the horizontal plane of the stator and the lateral face of the blade next to the stator is curved in such a way as to make the distance separating the two components substantially constant.

Abstract: A pressure regulating device for the injection of an aqueous polymer solution into an oil well, the device consisting of a series of straight tubes each with a pressure gauge, each tube being separated by a valve, where the valves are gate valves and/or needle valves. A method to reduce the injection pressure of an aqueous polymer solution according to the pressure of the well using the device.

Abstract: An installation for the dosing of a powder polymer having a particle size in the range from 100 to 500 micrometers intended to feed a blender in hydraulic fracturing operations, successively including: a powder polymer supply, from a pressurized tilting truck or from big bags emptied by pneumatic conveying, a mechanism for transporting the powder polymer fed by a compressor, and provided with a polymer transportation check valve, a hopper for receiving the powder polymer having a high level and a low level, the hopper being equipped with a pulse jet cleaning dust filter, as well as with a mechanism for controlling the check valve and the compressor according to the high and low levels, a screw feeder for dosing the powder polymer, positioned at the lower end of the hopper, the screw being equipped with a variable-speed motor capable of being remotely controlled.

Abstract: A device for dispersing a water-soluble polymer including a wetting cone connected at the top of same to a column metering the polymer of standard particle size, most usually by way of a metering screw, the bottom part of the cone being connected to a primary water inlet circuit that feeds an overflow, at the bottom end of the cone, an assembly including a chamber for grinding and draining the dispersed polymer, having a rotor driven by a motor provided with knives, a stator, over all or part of the periphery of the chamber, a ring fed by a secondary water circuit, the ring communicating with the chamber by way of slots for spraying pressurized water onto the stator. The slots of the stator and/or the knives of the rotor are tilted at an angle of between 20° and 80° relative to the horizontal plane of the stator.

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: An installation for the dosing of a powder polymer having a particle size in the range from 100 to 500 micrometers intended to feed a blender in hydraulic fracturing operations, successively including: a powder polymer supply, from a pressurized tilting truck or from big bags emptied by pneumatic conveying, a mechanism for transporting the powder polymer fed by a compressor, and provided with a polymer transportation check valve, a hopper for receiving the powder polymer having a high level and a low level, the hopper being equipped with a pulse jet cleaning dust filter, as well as with a mechanism for controlling the check valve and the compressor according to the high and low levels, a screw feeder for dosing the powder polymer, positioned at the lower end of the hopper, the screw being equipped with a variable-speed motor capable of being remotely controlled.

Abstract: A pressure regulating device for the injection of an aqueous polymer solution into an oil well, the device consisting of a series of straight tubes each with a pressure gauge, each tube being separated by a valve, where the valves are gate valves and/or needle valves. A method to reduce the injection pressure of an aqueous polymer solution according to the pressure of the well using the device.

Abstract: An apparatus for controlling the injection pressure of an aqueous polymer solution in a subsea oil wellhead, includes a linear pressure reducer in the form of a tube connected in series to the main injection line that is capable of absorbing the majority of the pressure drop and a choke that is capable of being regulated in order to enable a pressure control between 0 and 10 bar. Also, a process of offshore enhanced oil recovery by injection of an aqueous polymer solution uses the apparatus.

Abstract: An apparatus for emptying bags of pulverulent products without the spread of dust on the outside, which is intended to be used in particular in a water treatment plant, the apparatus including a box equipped with a removable closure, a slab situated at the periphery of the box, the slab being able to receive the bags so that they can be opened inside the box, a dust suction situated at the top of the box, a mechanism for dispersing the sucked-up dust or dissolving it in scrubbing water, a hopper situated at the base of the box, able to collect the powder from the bags, a mechanism of transporting the powder from the hopper to a powder storage.

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: An apparatus for controlling the injection pressure of an aqueous polymer solution in a subsea oil wellhead, includes a linear pressure reducer in the form of a tube connected in series to the main injection line that is capable of absorbing the majority of the pressure drop and a choke that is capable of being regulated in order to enable a pressure control between 0 and 10 bar. Also, a process of offshore enhanced oil recovery by injection of an aqueous polymer solution uses the apparatus.

Abstract: An apparatus for emptying bags of pulverulent products without the spread of dust on the outside, which is intended to be used in particular in a water treatment plant, the apparatus including a box equipped with a removable closure, a slab situated at the periphery of the box, the slab being able to receive the bags so that they can be opened inside the box, a dust suction situated at the top of the box, a mechanism for dispersing the sucked-up dust or dissolving it in scrubbing water, a hopper situated at the base of the box, able to collect the powder from the bags, a mechanism of transporting the powder from the hopper to a powder storage.

Abstract: Device that can be used in an enhanced oil recovery method by injection of a solution of water soluble polymer and brine having a viscosity below 1000 cps that includes a mixer, and preferably a static mixer, capable of homogenizing the solution on-line; a device capable of measuring the viscosity of the homogenized solution, continuously, downstream of the solution injection pump, at a pressure below or equal to 250 bars, and preferably between 50 and 250 bars, and at a temperature below or equal to 120° C., and preferably between 40 and 120° C., by measuring a pressure drop in a calibrated tube, at a constant rate of flow.