• Wellhead Pump Skid

    This unit is a dual output unit for use in ATEX Zone 1 hazardous environments and in compliance with NORSOK regulations.

    Wellhead Pump Skid Pdf

    NESSIE Explained Pdf


    The unit features control of the Hydraulic Master Valve (HMV) and Down Hole Safety Valve (DHSV) and Balance Line. Hydraulic power is provided by two air driven pneumatic pumps with stainless steel hand pumps as backup.

    All the regulators and valves required to operate this unit are mounted on the unit for manual operation.

    The unit is not designed for open seas handling and should be transferred using a suitable container.


    Dimensions & Weights

    Part Number L-6901027712
    (L) 90 cm, 35 in (W) 90 cm, 35 in (H) 75 cm, 30 in (Maximum Gross Weight) 500 kg, 1,102 lbs

    Performance Data & Specifications

    Hydraulic Pump ‚Äď Air / Hydraulic Pump

    • Max Pressure 11,000psi (758bar)
    • Flow rate 0.75lpm @ 10,000psi (690bar)
    • Hydraulic Tank Capacity (combined) 30 litres


    • Maximum Pressure (manual control) 5,000psi (345Bar)
    • Maximum Pressure (10K hand pump) 6,000psi (414Bar)


    • Maximum Pressure 10,000psi (690Bar)

    Balance Line

    • Maximum Pressure 10,000psi (690Bar)

    Sound Level

    • Maximum Sound Level (outside of unit) 80dB(A)

    Digital Pressure Recording

    • Digital Pressure Gauge with Data logging functionality¬†

    Environmental Conditions

    • Design Temperature range -20oC to +40oC, the hydraulic oil and grease grades must be chosen to suit the local environmental conditions.

    Power / External Supply

    • Air Supply
    • Minimum pressure 80psi (5.5Bar)
    • Maximum pressure 100psi (7Bar)
    • Volume requirements minimum 50cfm

    Design Standards

    The wellhead pump skid will be designed using the following standards:

    • Machinery Directive 2006/42/EC. CE Marked
    • ATEX 95 (94/9/EC), Group 2 Category 2 (Zone 1)
    • NORSOK D-002 System Requirements Well Intervention Equipment
    • NORSOK Z-015 Temporary Equipment


    • CE marked, ATEX Approved for use in a
    • Category 2 (Zone 1) hazardous area