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IndustryGlossary Term

Lean Construction

A project delivery approach that eliminates wasted time, materials, and labour on job sites. Subcontractors use lean methods to tighten scheduling, reduce idle crew time, and improve handoffs between trades. It often involves short-interval planning tools like the Last Planner System.

Related Terms

Legacy Site

Industry

An older facility or work location operating on outdated infrastructure, systems, or equipment. Subcontractors often face non-standard conditions, ageing assets, and extra compliance requirements on these sites. Mobilisation and scoping costs can be higher due to undocumented or deteriorated site conditions.

Advanced Conductors

Industry

Large-diameter steel casings driven into the ground before main drilling begins to stabilise the wellbore and prevent surface collapse. Subcontractors involved in conductor installation, welding, or pile-driving work are typically mobilised in this early phase. Securing this scope early can anchor longer project commitments on a well site.

Aggregates

Industry

Crushed stone, gravel, and sand used as base materials in construction and oil and gas site preparation. Subcontractors sourcing or hauling aggregates must account for material costs, transport, and site access conditions. Pricing and availability vary significantly by region and project remoteness.

Lower-Tier Subcontractor

Industry

A company or sole operator hired by a subcontractor, rather than directly by the prime contractor or owner. Lower-tier subs often face delayed payment cycles and reduced contract visibility. Understanding your tier position affects lien rights, insurance requirements, and invoice routing.

SCADA (Supervisory Control and Data Acquisition)

Industry

A control system that monitors and manages field equipment like pipelines, compressors, and wellheads in real time. Subcontractors working on SCADA-connected sites must follow strict access and cybersecurity protocols. Your work may trigger automated alarms or shutdowns if procedures aren't followed precisely.

Rig Utilization

Industry

The percentage of time a rig is actively working versus sitting idle. For subcontractors, high rig utilisation means steady billable hours and predictable revenue. Low utilisation signals contract gaps that strain cash flow and crew retention.

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