• Substructures

    Bringing together leading rig designers and manufacturers such as DRECOTM, IRI, Continental Emsco and DSI, we have the unique ability to provide necessary solutions for even the most demanding and custom rig application.


    Our substructures are in service worldwide in every drilling environment. Whether it be dealing with extreme environmental conditions, designing a completely custom rig or just upgrading your current equipment, we have a wide variety of standard designs and the experience and engineering power to develop innovative and custom designs. We can provide the right substructure to meet your needs.

    Substructures from NOV's comprehensive portfolio of standard rig offerings include:

    • DRECOTM Slingshot substructures
    • Box-on-Box substructures
      • Substructure boxes are stacked on top of each other to create a stable substructure. The top box can serve as the rig floor or a separate floor can be stacked separately.
      • Check out this substructure on our Ideal Box Rig.
    • Telescoping substructures
      • The floor is attached to the base of the substructure; the supports connect the floor to the base in the same respective locations. The base remains stationary and the floor telescopes directly up to working position.
      • Check out this substructure on our Mono-Transit Rig.
    • Box-in-Box substructures
      • The substructure is composed of two outside boxes placed parallel to each other, connected at the tops by a center drill floor. Each outside box contains an inner box. Hydraulic cylinders within the boxes raise the outer boxes vertically above the inner boxes. Outer boxes are latched in place to bring drill floor to working position.



    DRECOTM Slingshot

    • All rig floor components are installed and rigged up with the floor lowered so that no further rig-up is required after raising
    • All connections requiring disassembly for rig moves are pinned rather than bolted
    • Special alignment guides and stops for setback floor supports and setback spreader quicken assembly
    • Integrated side boxes and either pin-in spreaders or unitized floors
    • No personnel required to ride drill floor during raising operations
    • Substructure girders and floor elevators boxes equipped with loading rolls to ease transportation
    • Faster and easier rig-up and rig-down
    • Increased safety
    • Easier transportation
    • Field-proven
    • Efficient


    • Field-proven
    • Cost-effective
    • Easily winterized


    • Hydraulic cylinders or the block can be used for raising
    • Typical substructure for mobile rigs
    • Ideal for highly mobile, small rigs
    • Faster rig-up and rig-down
    • Increased safety
    • Easier transportation
    • No need for cranes


    • Latching cylinders hydraulically lock the outer top boxes in place
    • Total drill floor includes the top of both outer boxes and the center drill floor, which is pinned in place
    • Outer boxes are already assembled with cylinders and inner boxes
    • No personnel required to ride drill floor during raising operations
    • Faster and easier rig-up and rig-down
    • Increased safety
    • No need for cranes
    • Easier transportation and improved mobility
    • Efficient