• Tore Trap Desander

    Tore™ Trap is a single vessel desander and accumulator designed to remove sand from an inlet fluid stream with minimal disruption to the flow. Solid/liquid hydrocyclones deposit sand within the accumulation section whereupon the fluidizer is installed in the base of the accumulation section allows on-line sand discharge. It can be used in conjunction with a sand cleaning unit (e.g. a Tore Scrub) to allow sand to be cleaned to meet current environmental standards for disposal.

    The Tore Trap desander removes sand from a process fluid stream before the sand can cause problems with downstream equipment and allows on-line transfer or disposal of the captured sand while remaining on-line. It can also be used off-line in batch operation. Well fluids containing sand, enter the desanding cyclones installed in the upper section of the Tore Trap. These liners induce high centrifugal forces within the fluids, encouraging the sand to disengage and drop to the accumulation section in the lower section. The substantially sand free fluids exit via the cyclone overflow and continue to the remainder of the process equipment.

    After a set time period, or once the sand has reached a high level within the accumulation section, the Tore Fluidizer in the base of the desander is activated. The fluidizer utilises a motive fluid supply to fluidise and transport the sand as slurry from the accumulation section in a controlled manner. The sand can be directed to a cleaning package, disposal or other equipment as the project dictates. Typically a 1” Tore Fluidizer requires a motive fluid flow of 3-4 m3/hr to operate at a delivery pressure 0.5 bar above the operating pressure of the vessel. The desander continues to separate sand from the inlet fluids as this disposal occurs. Due to this on-line removal, the Tore Trap is superior to other desanders which may require off-line depressurisation or a separate accumulator vessel to operate. These vessels can be installed as part of a larger sand handling package or retrofitted to an existing plant. The operation of the Tore Trap can be fully automated allowing possible installation subsea to provide wellhead desanding or to allow removal of sand in hazardous areas.
    Description

    Operation Details:
    Well fluids containing sand enter the desanding hydrocyclones installed into the upper section of the desander. These liners induce high centrifugal forces within the fluids, encouraging the sand to disengage and drop into the accumulation section in the lower portion of the ToreTrap. The sand-free fluids exit the desander via the cyclone overflow and continue through the equipment on the production site. After a set time period, or once the sand has reached a high level within the accumulation section, the Tore fluidizer is activated.

    Utilizing a motive fluid supply, the Tore transports the sand as slurry. The sand can be directed to a cleaning package, disposal or other piece of equipment as the site requires. The desander continues to separate sand from inlet fluids as disposal continues. Online removal creates no pause in production, unlike other desanders. The operation can be fully automated.

    Features/Benefits

    • Online sand removal means no need to take desander offline
    • Single vessel provides reduced space and weight requirements
    • No moving parts in contact with sand leads to low maintenance
    • Removal of sand prevents erosion problems and improves production efficiency
    • Hydrocyclones and Tore fluidizer are insensitive to motion, so suitable in a range of environments
    • Low feed pressure and flowrate required
    • Automation available
    • Can be incporporated into wider plant control system
    • Can be retrofitted into existing system

    Specifications

    •  Common industries with applications include:
      • Oil & Gas
      • Metal Industries
      • Mining
      • Water/Wastewater
      • Nuclear
      • Food/Beverage
      • Pharmaceutical