Borehole Steel Casing

01 / 06

Strings inside strings

A well is lined with steel casing, each string set inside the last and cemented in. The fittings at the top and along the string are where fabrication counts.

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

02 / 06

Casing strings

Conductor, surface and production strings, cut to length and bevelled, with each joint checked for straightness.

03 / 06

Casing head

A flanged spool with side outlets, welded and faced, with its bolt holes drilled to the next spool.

How is it possible at Allmarc?

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

Used here for: Casing head

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

Manual MIG weldingQualified welders, including 6G

Used here for: Casing head

• Qualified welders, including 6G

All our machinery

04 / 06

Centralisers and shoe

Bow-spring centralisers keep the string in the middle of the hole; the rounded guide shoe leads it down.

How is it possible at Allmarc?

Deratech 6 kW fibre laser6 kW

Used here for: Centralisers and shoe

• 6 kW
• Cuts up to 20 mm
• 2,500 x 6,300 mm bed

All our machinery

Deratech 8 m tandem press brake8 m bending length

Used here for: Centralisers and shoe

• 8 m bending length
• Tandem technology

All our machinery

05 / 06

Joints and couplings

Joints delivered with their couplings, stored and shipped on racks.

06 / 06

Every part, apart

Strings, head, centralisers, shoe and couplings.