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IndustryGlossary Term

Support Activities for Oil and Gas Operations

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.

Related Terms

Hookup

Industry

The phase where installed equipment and systems are connected to utilities, instrumentation, and process lines. For subcontractors, hookup work often follows construction and represents a distinct, billable scope. Crews must coordinate closely with commissioning teams to avoid delays.

Compression Station

Industry

A facility that boosts natural gas pressure to move it through pipelines over long distances. Subcontractors are frequently mobilised here for maintenance, mechanical work, and equipment inspections. These sites often require specific safety certifications and site orientations before work begins.

LNTP (Limited Notice To Proceed)

Industry

A partial greenlight from a client authorising subcontractors to begin limited, specific work before the full contract is executed. It typically covers early mobilisation, procurement, or site prep activities only. Scope and spending are strictly capped, so track your costs carefully to avoid unauthorised overruns.

Lng (liquefied Natural Gas) Train

Industry

A single end-to-end processing unit that cools natural gas into liquid form for storage and export. Large LNG facilities run multiple trains, each requiring dedicated construction, maintenance, and shutdown crews. Subcontractors are typically mobilised per train, making scope and schedule highly compartmentalised.

Transmission Main

Industry

A large-diameter pipeline that moves water, gas, or other fluids over long distances at high pressure. Subcontractors are often hired for installation, inspection, or maintenance work on these lines. Strict pressure ratings and material specs govern all field work.

Pipeline Open Season

Industry

A formal period when a pipeline operator solicits capacity commitments from shippers before building or expanding a line. For subcontractors, it signals upcoming construction and maintenance work. Winning bids during this phase often trigger mobilisation timelines and crew planning.

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