• Block Control System

    NOV engineers integrated our proven MD Totco™ instrumentation and sensor technologies with the powerful Baylor 2025B eddy brake control to create a closed-loop block control system (BCS) that overcomes the inherent deficiencies of traditional crown/rig floor savers and kinetic energy devices. The closed-loop control technology allows our system to constantly calculate when to apply the eddy current brake, while continuously measuring the effect of the brake’s application and adjusting the force accordingly.



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    Closed-loop control and passive operation  

    • Provides positive block control over the entire range of travel
    • Operates in the background, only providing the driller with control when necessary

    Crown/rig floor saver—driller establishes upper and lower limits 

    • Helps eliminate unplanned events and costly consequences

    Monkeyboard protection 

    • Avoids collisions by stopping the blocks with link tilt extended beyond a desired range when approaching the monkeyboard

    Block positioning and speed control 

    • Enables faster trips and connections
    • Maximizes operational efficiency and protects against swab and surge effects