• Shakers and Fluid Conditioners

    BRANDTâ„¢ manufactures several models of shale shakers, each targeting a specific segment of the market. Manufacturing facilities are located in USA and Scotland. Shale shakers are just one of the many solids control offerings that NOV supplies to the industrial industry.

    Shale shakers separate solids from liquids by utilizing a vibrating basket, which is outfitted with specially designed and sized screens. Shakers are considered the most important tool for removing drilled solids. These units remove the majority of drilled solids generated during the typical drilling process. Shale shakers typically generate between five to over eight G-forces of energy for removing solids from the fluid system.

    Drilling rigs may employ any number of shale shakers, depending on the specific drilling parameters of the well. Typically, several shakers are utilized for normal drilling operations. Additional shakers are added in response to a specific well program.

    Mud conditioners were first designed to remove fine drilled solids from weighted muds. Their primary purpose now is to de-sand weighted muds. Due to advancements in fine screening at the flowline, the mud conditioner's use in the weighted hole section is much more limited than in previous decades. Consequently, the mud conditioner is used in this application to de-sand the mud until the primary shakers are capable of maintaining the sand content of the mud to a trace. The secondary use of a mud conditioner occurs when environmental conditions prohibit the use of a reserve pit. The mud conditioner is used to reclaim liquid from the hydrocyclone underflow while drilling hole sections with unweighted mud.

    Typically, multiple desander cones (12 in or 10 in) and desilter cones (4 in) are mounted above the screen deck of a shale shaker. The size of the solids (in microns) removed by these units is directly correlated to the size of the cone. The larger the cone, the larger the size of the particle removed and vice-versa. The mud is fed first through the hydrocyclones, where it subsequently cascades down over the shale shaker. The remaining solids, including barite, are returned to the mud system.

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