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    AI Overview

    An AI Overview is not available for this search Can't generate an AI overview right now. Try again later.
    AI Overview
    A "near-bit follow-on measurement system" is a downhole drilling tool that collects real-time data, such as inclination, gamma ray counts, and resistivity, directly from near the drill bit to provide immediate feedback to drillers. This "follow-on" aspect refers to the system providing data that leads to or follows from drilling decisions, enabling immediate adjustments to the drilling trajectory and improving accuracy in geo-steering operations .
    How it Works
    1. Placement:
      The system is positioned in a sub-assembly between the drill bit and the downhole motor.
    2. Measurement:
      It collects data on drilling parameters in real-time at the bit-rock interface, where conditions can be influenced by vibration and other drilling factors.
    3. Wireless Transmission:
      Data is transmitted wirelessly, often via an electromagnetic signal, through the drill string to a receiver located some distance above the bit.
    4. Surface Transmission:
      The receiver decodes the information, which is then sent to the surface for logging and analysis.
    • MODEL AP600 - Applied Physics Systems
      Page 1. The Applied Physics Systems Model AP600 Near Bit Sub is designed to be used with the Applied Physics Systems Model AP250 E...
      Applied Physics Systems
    • Continuous near-bit inclination measurement based on installation ...
      Continuous near-bit inclination measurements can improve the accuracy of calculating wellbore trajectory and drilling efficiency.
      IOPscience
    Benefits
    • Improved Accuracy:
      Near-bit measurements improve the accuracy of wellbore trajectory calculations and can be critical for precise kickoff delivery.
    • Enhanced Geo-Steering:
      The real-time data allows for immediate, informed decisions, enabling drillers to make rapid adjustments to stay within the target reservoir.
    • Increased Efficiency:
      By minimizing deviations from the target, near-bit systems can help extend the length of productive intervals.
    • Real-Time Control:
      The system provides "up/down" or "high/low" information by tabulating gamma counts in different bins, allowing for quick directional guidance.
    • A Step Change in Real-Time Near-Bit Measurements from an ...
      Oct 19, 2020 — A Step Change in Real-Time Near-Bit Measurements from an Instrumented Downhole Drilling Motor Improves Directional Dri...
      OnePetro
    • Rotary Steerable Systems Optimize Wells in Variety of Environments
      Oct 1, 2017 — Powered By Experience. The systems also measure inclination and azimuth close to the bit. This close proximity and meas...
      SLB
    • Near Bit Tools - COMPASS
      Compass Directional Guidance
    • Development of a near-bit MWD system. Phase 2 -- Final report
      Aug 6, 2025 — Description. The program objective was to develop a Near-Bit Measurement-While-Drilling (MWD) system which collects bor...
      UNT Digital Library
    • Near-Bit Measurement While Drilling System
      The NB MWD system comprises a Measurement Collar and a Receiver Collar. The Measurement Collar is positioned between the positive ...
      liu-he.com
    • Near Bit Tools - COMPASS
      Compass Directional Guidance
    • Development of a near-bit MWD system. Phase 2 -- Final report
      Aug 6, 2025 — Description. The program objective was to develop a Near-Bit Measurement-While-Drilling (MWD) system which collects bor...
      UNT Digital Library
    • MODEL AP600 - Applied Physics Systems
      Page 1. The Applied Physics Systems Model AP600 Near Bit Sub is designed to be used with the Applied Physics Systems Model AP250 E...
      Applied Physics Systems
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    Near-Bit Sub | The Closest Thing to The Bit


    MWDPlanet
    https://mwdplanet.ca › voyager-near-bit-sub
    MWDPlanet
    https://mwdplanet.ca › voyager-near-bit-sub
    Our modular near - bit sub, Voyager, provides measurements as close to the real-time position of the bit as possible.

    Near Bit Tools


    Compass Directional Guidance
    https://compass-mwd.com › near-bit-tools
    Compass Directional Guidance
    https://compass-mwd.com › near-bit-tools
    Compass near bit tools provide industry-leading near-bit measurement (Inclination, Azimuthal Gamma, Azimuthal Resistivity).
    Missing: follow- ‎| Show results with: follow-

    Near Bit-based Coal Seam Construction Operation


    CIQTEK
    https://www.ciqtekglobal.com › near-bit-based-coal-sea...
    CIQTEK
    https://www.ciqtekglobal.com › near-bit-based-coal-sea...
    In January 2022, the CatLiD-I 675 near-bit follow-on measurement system provided by CIQTEK-QOILTECH achieved a successful operation well in the Linxin.

    NEAR BIT INCLINATION - Pacesetter Directional Drilling


    pacesetterdirectional.com
    https://www.pacesetterdirectional.com › 2018/05
    pacesetterdirectional.com
    https://www.pacesetterdirectional.com › 2018/05
    PDF
    Ideal for accurate well placement, providing dynamic inclination, shock and vibration measurements right behind the drill bit. Used in vertical or build ...
    1 page

    Tolteq iSeries Near-Bit Sub


    NOV
    https://www.nov.com › products › tolteq-iseries-near-bi...
    NOV
    https://www.nov.com › products › tolteq-iseries-near-bi...
    Tolteq iSeries Near-Bit Sub. Provides real-time inclination and azimuthal gamma data from directly above the drill bit for accurate and precise well placement.
    Missing: follow- ‎| Show results with: follow-

    Near-Bit Az GR Sub - Fulsailing


    fulsailing.com
    https://fulsailing.com › index.php › Drilling
    fulsailing.com
    https://fulsailing.com › index.php › Drilling
    The Near-Bit Az GR Sub measures the Gammer reading of formation by sending radio current signal. The receiver receives and decodes the signals, ...

    MODEL AP600


    Applied Physics Systems
    https://appliedphysics.com › uploads › 2022/06
    Applied Physics Systems
    https://appliedphysics.com › uploads › 2022/06
    PDF
    The Near Bit Sub enables measurement of inclination and gamma count data approximately two feet behind the bit. Data is wirelessly transmitted around the ...
    2 pages
    Missing: follow- ‎| Show results with: follow-

    Research and Test on the Device of Downhole Near-Bit ...


    MDPI
    https://www.mdpi.com › ...
    MDPI
    https://www.mdpi.com › ...
    by M Lu · 2023 · Cited by 3 — The system utilizes a near-bit measurement method to simultaneously measure downhole parameters, including mud pressure and temperature.

    Bit inclination measurements enhancing traditional ...


    Offshore Magazine
    https://www.offshore-mag.com › article › bit-inclinatio...
    Offshore Magazine
    https://www.offshore-mag.com › article › bit-inclinatio...
    Jul 31, 1999 — A near - bit directional measurement increases the ability of these systems to automatically detect, and correct, trajectory deviations. This ...

    Near Bit Inclination Motor - Pacesetter Directional Drilling


    pacesetterdirectional.com
    https://www.pacesetterdirectional.com › ranging-services
    pacesetterdirectional.com
    https://www.pacesetterdirectional.com › ranging-services
    The near bit inclination motor reduces the reaction time for making time critical steering decisions and maintaining the well bore in the targeted interval.
    Missing: follow- ‎| Show results with: follow-

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