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Industry Glossary Term

Reamer

A downhole tool that enlarges or stabilises a borehole during drilling operations. Subcontractors supplying or operating reamers must ensure proper tool specifications match formation conditions. Rental and mobilisation costs are typically scoped into the drilling services contract.

Related Terms

Decommissioning

Industry

The process of safely shutting down and dismantling oil and gas infrastructure at end-of-life. For subcontractors, it generates significant work in removal, remediation, and site restoration. Scopes often include demolition, equipment salvage, and regulatory closeout tasks.

Berth

Industry

A designated docking space where vessels load or offload equipment, materials, and crew. Subcontractors must coordinate mobilisation schedules around berth availability to avoid costly delays. Port congestion can directly impact your invoicing milestones and crew rotations.

AISI (American Iron and Steel Institute)

Industry

A standards body that classifies steel grades used in oilfield and construction equipment. Subcontractors reference AISI codes when sourcing pipe, fittings, or structural steel to meet spec requirements. Knowing these grades helps avoid costly material rejections on site.

Gas Sales Precedent Agreement

Industry

A conditional agreement between a producer and gas buyer that must be satisfied before a project moves to full development. For subcontractors, it signals that major field mobilisation and long-term work commitments depend on this deal closing. Delays or failed negotiations can stall contracts, procurement, and crew deployment.

Kelly Bar

Industry

A heavy, telescoping steel rod that transmits rotary torque from a drill rig to the auger or cutting tool. Subcontractors operating foundation or piling rigs must inspect kelly bars regularly for wear and cracking. Damage affects drilling performance and can cause costly downtime on tight project schedules.

Call for Interest

Industry

A formal notice from an operator or prime contractor inviting subcontractors to express interest in upcoming work. It is not a binding tender but helps owners build a qualified vendor list. Responding early can position your company for the actual bid process.

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