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IndustryGlossary Term

Inactive Well

A wellbore that is not currently producing or being actively operated, but has not been formally abandoned. Subcontractors may be hired for monitoring, maintenance, or eventual reclamation work on these sites. Regulatory requirements around inactive wells vary by province and can affect scope and timeline.

Related Terms

Grid-Tie

Industry

A system that connects on-site power generation to the utility grid. Subcontractors working on grid-tie installations must coordinate with utility companies and meet strict interconnection standards. Common on solar and wind projects in remote industrial or construction settings.

Proved Development Locations

Industry

Sites already approved for drilling within a producing field, based on confirmed reserves data. For subcontractors, these locations represent near-term, lower-risk work opportunities. Expect faster mobilisation timelines and more defined scopes compared to exploratory sites.

Umbilicals, Risers, and Flowlines

Industry

Collectively referred to as URF, these are the subsea infrastructure components that connect wellheads to production facilities — umbilicals carry control fluids and signals, risers bring production to surface, and flowlines move product along the seabed — subcontractors are commonly engaged for their installation, inspection, maintenance, and integrity management work. Understanding the distinctions between these systems helps field crews accurately scope work orders, apply correct certifications, and bill against the right line items in offshore or subsea contracts.

SMR (Small Modular Reactor)

Industry

A compact, factory-built nuclear power unit used to generate on-site electricity for remote industrial facilities and resource projects. For subcontractors, SMR sites represent emerging work in civil, electrical, and mechanical trades. Expect strict federal nuclear safety compliance requirements affecting worker certifications and site access.

Tank Farm

Industry

A designated site containing multiple large storage tanks for oil, gas, or chemicals. Subcontractors frequently perform inspection, maintenance, and cleaning work at these facilities. Access permits and confined space certifications are typically required on site.

Third-Party Contracting

Industry

An arrangement where a primary contractor hires an outside company to perform specialised work on a project. For subcontractors, this defines your position in the contracting chain and affects payment terms, liability, and site access. Knowing your tier level helps clarify who you invoice and who manages your compliance requirements.

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