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Substructures
Substructures
Structures

National Oilwell Varco is the leading expert in overall land rig design, including substructures. Bringing together leading rig designers and manufacturers such as DRECOTM, IRI, Continental Emsco and DSI, NOV has the unique ability to provide necessary solutions for even the most demanding and custom rig application.

For questions, please contact:

Land Rig Solutions
10000 Richmond Avenue
Houston, TX 77042
Phone: 713-346-7500
Fax: 713-435-2195
Email:rig@nov.com

Direct Connect New

NOV understands that time means money. Use the Direct Connect email link above and we will respond within 24 hours. If we can't answer your question, we will direct you to an NOV expert. If you are in a rig down situation, contact 24/7 technical support at 281-569-3050.

 

National Oilwell Varco substructures are in service worldwide in every drilling environment. Within NOV, we have brought together the history and experience of leading rig designers and manufacturers such as DRECOTM , IRI, Continental Emsco and DSI, and we offer the unique ability to provide the necessary solutions for even the most demanding rig applications, whether it be dealing with extreme environmental conditions, designing a completely custom rig or just upgrading your current equipment. With a wide variety of standard mast designs shown below and the experience and engineering power to develop innovative and custom designs, NOV 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.
    • Check out this substructure on our Smart Box Rig.
FeaturesBenefits

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

Box-on-Box

 · Field-proven

 · Cost-effective
 · Easily winterized

Telescoping

 · 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

Box-in-Box

 · 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