• Choke Manifold: 5000D

    The MPowerD™ choke manifold automatically provides primary finite control for balanced/underbalanced fluid return rates and wellhead pressure during managed pressure drilling (MPD) operations. This choke manifold has been designed for use in a wider range of MPD applications and is suitable for land, shelf, and offshore drilling operations.

    Our choke manifold offers the widest range of operations in the different MPD variants. Since NOV is a single-source OEM, you will gain greater value and a positive impact on your MPD applications and overall ownership costs.


    HXE-G3 Choke

    Continuous duty-cycle Siemens electric servo motor  

    • Yields precise pressure control and quick response times 
    • Allows the choke to function reliably in cold conditions without the cost of running and maintaining hydraulic lines

    Remote MPowerD control system operation allows automatic or manual control of the choke 

    • Automatic mode - The choke rapidly adjusts trim positioning to maintain the set-point pressure that is input at the control system
    • Manual mode – The choke can be operated by bypassing the electric motor for inspection and service 

    Integrated Bypass Line

    • Allows cement and the casing shoe to be drilled out without impacting the chokes while in MPD Mode
    • Bypasses the MPD system without impacting drilling operations when the system is not in use
    • Directs pressure and fluids safely away from personnel servicing the choke while online

    ANSON E-Type Gate Valves

    Two types of valve actuators used 

    • ROTORK™ Electric Actuator – remote actuation 
      • Isolates either or both legs of the manifold 
      • Designed with spring-return fail-safe double-acting cylinders (DA) to fail in place 
    • Manual Actuator – local operation at the manifold

    Through-conduit gate valves are robust and easy to maintain 

    Forged steel body and bonnet, bi-directional sealing, low operating torque, manually operated (non-rising stem) 

    MPD 30 PRV

    • Continuous monitoring of the wellbore pressure to prevent over-pressurization scenarios
      • Hard trip – set at the highest expected pressure
      • Soft trip – set dynamically by the MPD operator 
    • Fail-in-place design prevents unintentional pressure fluctuations
    • Bleeds off only excess pressure and will close under pressure to maintain setpoint
    • Network capable system is interfaced with the MPowerD control system for remote set point control



    Working pressure: 5,000 psi 
    Flange inlet and outlet: API 41/16 in.
    Service: Sour NACE MR0175
    Ring groove inlay: CRA 625
    Temp. class: ‘P+U’ (-20°F to 250°F) 
    Choke mode: HXE-G3 
    Choke actuator: Electric servo
    Choke size: 3 in. 
    Relief valve: MPD 30 Automatic PRV
    Isolation valves: ANSON E-Type
    Performance standard: PSL-3
    Dimensions (L x W x H): 16 x 8 x 7.5ft 
    Weight: 23,700 lbm
    Lifting certification: DNV 2.7-1
    Area classification: Class 1, Div.1, ATEX Zone 1
    Manufacturing certifications: ISO 9001-2008 and API Q1 9th edition

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