HMR SlotBox® Highly Mobile Rig® Package

The HMR SlotBox® land drilling structure from Lee C. Moore provides a mast and substructure system that offers pad drilling efficiencies, weather protection and ease of movement from one drilling site to another. These state-of-the-art, highly mobile rigs feature the mast lower section to remain secured inside the top substructure box during transport to reduce rig-up time.


HMR Highly Mobile Rig SlotBox® Mast
This three-section mast system for land drilling offers optimal safety and efficiency going from the horizontal to vertical position. It also simplifies transport, thanks to a bottom section that is integrally mounted in the substructure boxes and single-stage/double-acting hydraulic cylinders.

The mast provides a large footprint on the drill floor to maximize the safe working surface area. Standard static hook capacities range from 600,000 to 750,000 pounds, with capabilities up to 1.3 million pounds.

Features and benefits
  • Easy transport with Lee C. Moore dollies
  • Integral lifting eyes for handling with cranes
  • Bracing to prevent misalignment
  • Accommodates four foot-wide catwalk the full length of mast on the drawworks side to safely access lifting eyes
  • Full view of drill floor from driller’s cabin during operations
  • Hydraulic cylinders remain pinned to mast during drilling/transport
  • Reduced move and rig-up time
  • Adjustable front shoe controls deflection and keeps drill pipe over well center
  • Monogrammed per API specification 4F

Learn more
Quotes are available on request. Contact us and provide the maximum static hook load required, overall height of the mast, working temperature and total lines strung to mast.

More information is also available in our online brochure.

HMR Highly Mobile Rig SlotBox® Substructure
SlotBox® box-on-box substructures from Lee C. Moore can accommodate drawworks with more than 1,500 horsepower and are designed to facilitate fast rig moves with minimal disassembly and rig-up. They offer an integral walking system and are designed to operate in any condition, with features that include adjustable floor heights, internal staircases, access platforms and handrails.

For cold weather areas, winterization panels offer protection with either single- or dual-panel fabrications. The dual-panel design puts insulation between the panels to maximize efficiency.

Mast-raising cylinders are easily accessible within the top box, and alignment guides facilitate the quick stacking of sub-boxes. The substructure also provides an open view of the drill floor during drilling operations.

Features and benefits
  • Bracing enables walking rig over well heads up to five feet high in both forward and side skidding operations
  • Enclosed sub-boxes for protection in sub-freezing temperatures
  • Dog house/driller’s cabin supports fold into sub-boxes, eliminating removal for rig moves
  • Drill floor recess allows drawworks to be flush with working area
  • Designed to work with Lee C. Moore BOP hoist
  • Drill line spooler pins directly to substructure – no need for forklift during walking operations
  • Designed to meet API specification 4F

Learn more
Quotes are available on request. Contact us and provide the overall height and width of the substructure, the size of the drawworks, maximum static hook load and operating pressure.

More information is also available in our online brochure.