Derrick Sub-structures

01 / 07

Under the derrick

Two braced boxes carrying the drill floor, with the lower mast section above. The rig designer’s drawings set every size.

Scroll to see how it is built · drag to turn it round

02 / 07

Side boxes

Braced boxes of H-sections and tubular diagonals, drilled for the pins that join them on site.

How is it possible at Allmarc?

Kotec newRun10DX CNC beam drilling lineH-beams up to 1,000 x 500 mm

Used here for: Side boxes

Heavy profiles that need precise holes, where plasma cannot do the job: the lower structure and panel borders of a ground flare, and every bolted PEB and multi-storey frame.

• H-beams up to 1,000 x 500 mm
• Drills 3 faces in one pass
• Channels, angles and box sections

All our machinery

HSG CNC tube laser4 kW

Used here for: Side boxes

• 4 kW
• Tubes and sections up to 250 dia
• Automatic loading

All our machinery

03 / 07

Rotary and setback beams

Deep built-up beams carrying the rotary table and the pipe set back on the floor.

04 / 07

Drill floor

A plated floor with handrails round the edge.

05 / 07

Lower mast section

Legs, girts and diagonals, with the V-door opening on one face.

How is it possible at Allmarc?

CNC profile laserTube, beam and structural profile cutting

Used here for: Lower mast section

• Tube, beam and structural profile cutting

All our machinery

06 / 07

Ramp, catwalk and stairs

Pipe-handling ramp and catwalk, and stairs from grade.

07 / 07

A kit of parts

Boxes, beams, floor and mast section: every member numbered, match-marked and packed in erection sequence.