• Shale Shaker Screens

    NOV manufactures screens for BRANDT™ shale shakers, which include the COBRA™, VSM™ and LCM Series shakers. Replacement screens are also manufactured for competitor equipment. Replacement screens for competitor shale shakers combine proven mesh combinations with an innovative, diamond-patterned plate to improve separation efficiency of the shaker, while extending screen life. These NOV replacement screens are engineered to meet the exact design specifications of the competitor’s shale shaker and can be installed directly on the unit using the stock wedges. Replacement screens are available in a variety of mesh combinations to best suit the needs of the drilling application.

    BRANDT screens will enable you to gain the best energy transfer from the basket to the screen surface while maximizing screen vibration which increases conductance (flow), cut point, and maximizes non-blanked open area on screens.

    As a voting member of the American Petroleum Institute, NOV has fully supported the development of the API 13C RP (ISO 13501) standard for screens. All BRANDT screens are compliant to API 13C RP (ISO13501), which means the screen must be tested and labeled in accordance to the API 13C RP standard. This testing and labeling enable prediction of the performance of the screen anywhere in the world as an internationally accepted practice.

    The new recommended screen labeling practice provides the following API RP 13C information:

    • API Designation
    • Conductance in kD/mm
    • D100 Value
    • Non-Blanked Open Area in Square Feet
    Engineers test and develop screen products in the NOV Analytical Laboratory. This laboratory performs many different functions, such as: 
    • Failure Analysis
    This analysis allows us to better define the root cause of failure. The identification of root cause provides the direction to modify the design for improvement in actual performance, as well as increased durability.
    • Fluids Management 
    The Analytical Laboratory also supports our full scale pilot plant testing. Constant observation and monitoring of calibrated test fluids, which have solids representing each API sieve class, allows us to maintain consistency and repeatability in screen testing. This base mud, along with particles of a known size, are used to evaluate the performance of new and existing screens.
    • API RP 13C Testing
    Dry sieve testing procedures, as well as conductance testing, allow us to apply specific potential values to screens in order to aid in further design advancements.
    • QA/QC of Screen Materials

    Periodic sampling and analysis of screen cloths ensures consistent quality. Typical analyses include chemical composition, tensile strength, percent elongation, ductility, wire count and wire size. With highly trained screen sales teams available to support your screening needs 24/ 7, a knowledgeable and friendly salesperson is ready to provide you with the correct screen for any drilling condition.

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