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IndustryGlossary Term

Processing Train

A series of vessels and equipment that separates wellhead fluids into oil, gas, and water. Subcontractors are often scoped to one train at a time, so know which train your work order covers. Shutdowns or upsets on your train can directly affect your crew's schedule and completion milestones.

Related Terms

Pigging

Industry

The process of running a device called a pig through a pipeline to clean, inspect, or displace fluids. Subcontractors are often hired to provide pig launcher and receiver equipment, operators, and associated support services. Pigging scopes can range from routine maintenance runs to complex inline inspection campaigns.

Heavy Civil Contractors

Industry

Companies that build large-scale infrastructure such as roads, bridges, pipelines, and earthworks. For subcontractors, they are common prime contractors who hire specialised field crews and equipment operators. Understanding their project structures helps subs navigate bidding, scheduling, and payment terms.

Energy Security

Industry

A nation's ability to maintain reliable, uninterrupted energy supplies. For subcontractors, it drives long-term project demand in oil, gas, and infrastructure. Governments prioritising energy security often accelerate capital spending, creating sustained work opportunities.

Design-Bid-Build

Industry

A project delivery method where design is completed before subcontractors are invited to bid. Scope is fully defined upfront, reducing ambiguity in your quote. Common in construction; less flexible once awarded, so price your bid carefully.

Multi-Package Procurement

Industry

A contracting approach where a large project is divided into separate scopes, each awarded as its own contract package. Subcontractors may bid on one or several packages rather than the full project. This creates more entry points for smaller field service firms but requires careful scope coordination.

Combined-Cycle Gas Plant

Industry

A power generation facility that uses both gas turbines and steam turbines to maximise efficiency. For subcontractors, these sites involve complex, multi-discipline scopes across mechanical, electrical, and instrumentation trades. Outage and commissioning work is highly scheduled, requiring precise crew coordination and fast mobilisation.

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