• Dryers

    BRANDTâ„¢ markets two types of dryers: horizontal units and vertical units. Both types of dryers can reduce the oil content left on the drill solids by an average of less than three weight/weight percent. This is based on the wet weight of the solids discharged from the solids control equipment on the rig.

    Dryers are similar to centrifuges in that they subject drill solids to high G-forces. They differ, however, in that they use a wedge wire screen to separate solids from liquid. Normally, these units are used on wells that employ an oil-based or synthetic-based mud system. Mud costs are high in these situations and dryers reduce mud losses, thus providing cost savings.

    Dryers are positioned to process the solids that are removed by the shale shakers and hydrocyclones. Once these solids have been processed by the dryer, they can be stored for removal from the rig (land or offshore), ejected from the rig (offshore) or they can be sent to a centrifuge for further processing. The liquid recovered by the dryer and subsequent centrifuge is returned to the active mud system for reuse. This process creates cost savings by reducing the mud volume that would have been discharged along with the drill solids. The waste generated throughout the drilling process is also reduced.

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