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IndustryGlossary Term

ISR (In-situ Recovery)

A mining and extraction method where ore or hydrocarbons are dissolved and pumped to surface without conventional excavation. Subcontractors typically supply specialised drilling, fluid handling, and wellfield construction services. Work scopes are often long-duration with strict environmental monitoring requirements.

Related Terms

DUC (Drilled-but-uncompleted Well)

Industry

A well that has been drilled but is awaiting completion work such as fracturing, perforating, or production tie-in. Operators stockpile DUCs when commodity prices are low, then activate them when prices recover. For subcontractors, a large DUC inventory signals upcoming bursts of completion and surface work.

Cable-Stayed

Industry

A bridge or structure supported by cables running directly from towers to the deck. Subcontractors working on these structures face specialised rigging, inspection, and access challenges. Confirm tower and cable access requirements before mobilising crew and equipment.

Inversion (pipe Lining)

Industry

A trenchless pipe rehabilitation method where a resin-saturated liner is turned inside-out into an existing pipe using water or air pressure. The liner cures in place, forming a new pipe within the old one. Subcontractors are typically scoped for setup, inversion equipment operation, and post-cure inspection.

Wall Thickness Assessment

Industry

An inspection process that measures remaining material thickness in pipes, vessels, or structural components to detect corrosion or erosion. Subcontractors are often hired to perform these assessments using UT (Ultrasonic Testing) equipment. Results determine whether assets require repair, replacement, or continued monitoring.

Life Extension

Industry

A formal process that prolongs the operational life of ageing assets beyond their original design lifespan. For subcontractors, it often means increased inspection, repair, and maintenance scopes. Expect stricter compliance requirements and potential for longer-term service contracts.

Transmission Corridor

Industry

A designated strip of land reserved for pipelines, power lines, or utility infrastructure. Subcontractors must obtain right-of-entry approvals before mobilising equipment or crews within these zones. Work inside corridors often triggers additional environmental and regulatory compliance requirements.

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