• AHD-500 Active Heave Drilling Drawworks

    With development and introduction of the Active Heave Drilling™ (AHD) technology, NOV offers a quantum leap solution to the drilling industry.
    Description

    With development and introduction of the Active Heave Drilling™ (AHD) technology, NOV offers a quantum leap solution to the drilling industry. AHD has already set new standards for compensation accuracy, improved wireline life, workable load range, and rig safety, by providing proven, active heave compensation for drill ships, semi-submersible drilling rigs, and floating drilling/production platforms. Costly, heavy, compensation systems and machinery are eliminated and the available capacity increases the operational window for the vessel, drastically reducing operating costs.

    Features/Benefits

    • AHD vs. Traditional Compensator Systems - Reduced Overall Equipment Cost
    • Increased operational capacity and availability:
      • Less waiting on weather
      • Less operational cost
    • Lower weight and weight on drillfloor:
      • Increased deckload capacity
      • Less operational cost
    • Lower center of gravity:
      • Better vessel stability
      • Less operational cost
    • More accurate active heave compensation:
      • Better drilling performance and easier equipment landing
      • Less operational cost
    • Lighter derrick and substructure:
      • Less initial cost
    • Easy installation with few components:
      • Less initial cost
    • Reduced and easier maintenance:
      • Less operational cost
    • Redundancy on critical components:
      • High availability
      • Less operational cost
    • Single high speed:
      • Faster tripping, riser and BOP running
      • Less operational cost

    Specifications

    Continuous HorsepowerNumber of MotorsNumber of Lines2nd Layer Hook Load (Tons)Drawworks Dimensions
    L x W (in)
    Drum Dimensions
    Dia x L (in)
    Weight (lbs)
    4600410
    12
    500
    600
    290" x 154"63" x 82"152,000
    Specifications are subject to change without notice.