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Industry Glossary Term

Sewer Separation

The process of splitting combined sewer systems into separate lines for sanitary waste and stormwater runoff. Subcontractors are commonly hired for excavation, pipe installation, and tie-in work on municipal or industrial separation projects. Scopes can include bypass pumping, trenchless methods, and service reconnections.

Related Terms

Legacy Well

Industry

An older well built to outdated standards that may require specialised remediation, abandonment, or workover services. Subcontractors should expect non-standard equipment configurations and additional compliance requirements. Scope creep and unforeseen costs are common on legacy well projects.

Compression

Industry

The mechanical process of increasing natural gas pressure for pipeline transport or storage. Subcontractors are frequently mobilised to install, maintain, or repair compressor units and associated equipment. Compression work is common in gas processing facilities, wellsites, and midstream pipeline operations.

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.

Triple Drilling Rig

Industry

A large land rig capable of drilling deep wells, typically over 5,000 metres. It requires specialised subcontractors and larger crews than smaller single or double rigs. Expect higher equipment and certification requirements when bidding on triple rig projects.

Energy Transition

Industry

The global shift from fossil fuels toward renewables, hydrogen, and lower-emission energy sources. For subcontractors, it means new project types, updated certification requirements, and evolving client scopes. Diversifying skills into solar, wind, or carbon capture work helps firms stay competitive.

Crude Oil Stock Build

Industry

A rise in stored crude oil inventories, signalling weak demand or oversupply. This often triggers operators to slow production, which can delay or reduce field service work orders. Subcontractors should monitor stock build trends as an early indicator of project slowdowns.

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