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IndustryGlossary Term

Transmission Infrastructure

Large-scale pipelines, compressor stations, and related facilities that move oil, gas, or power across long distances. Subcontractors are frequently mobilised for construction, inspection, and maintenance work on these assets. Scopes can be extensive, requiring multi-trade crews and strict regulatory compliance.

Related Terms

Remote Visualisation

Industry

Technology that lets off-site engineers or clients view live site conditions, equipment data, or progress through cameras and sensors. Subcontractors use it to reduce costly site visits and support faster decision-making. It also creates a visual record that can support billing milestones or dispute resolution.

High-Impact Well

Industry

A well with significant technical complexity, cost, or strategic value to the operator. For subcontractors, these projects typically involve stricter oversight, specialised equipment, and higher performance expectations. Mobilisation windows and crew qualifications are often scrutinised more closely.

Support Activities for Oil and Gas Operations

Industry

An industry classification covering subcontractors who provide services to upstream oil and gas producers without extracting resources themselves. This includes well servicing, site prep, equipment rental, and pipeline support. Most field service companies in oil and gas fall under this category for tax and regulatory purposes.

ERAS (Expedited Resource Addition Study)

Industry

A utility or pipeline operator's fast-tracked assessment to connect new energy infrastructure to the grid or network. For subcontractors, an approved ERAS often signals upcoming mobilisation opportunities and tight project timelines. Winning work tied to an ERAS typically means compressed schedules and rapid crew deployment.

Preconstruction

Industry

The planning phase before field work begins, covering scope review, site assessments, and schedule alignment with the GC. Subcontractors are often engaged during this phase to provide pricing, labour forecasts, and constructability input. Early involvement can improve mobilisation timelines and reduce costly scope changes later.

Secondary Stress

Industry

Indirect mechanical stress that develops in structures or piping due to thermal expansion, settlement, or equipment movement. Unlike primary stress, it isn't caused by direct applied loads. Subcontractors must account for it during installation and inspection to avoid material fatigue and warranty disputes.

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