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IndustryGlossary Term

Bentonite

A natural clay mineral used in drilling fluids to stabilise boreholes and suspend drill cuttings. Subcontractors handling bentonite slurry must follow site-specific mixing and disposal procedures. Improper handling can trigger environmental compliance issues and project delays.

Related Terms

VRU (Vapour Recovery Unit)

Industry

A compression system that captures hydrocarbon vapours from storage tanks or production equipment instead of venting them. Subcontractors are often hired to install, maintain, or service VRUs to meet emissions regulations. Familiarity with VRU work is increasingly required on oil and gas production sites.

Rigging

Industry

The equipment and techniques used to lift, secure, and move heavy loads on a job site. Subcontractors must ensure all rigging gear is certified and operators are ticketed. Improper rigging is a leading cause of serious incidents and contract liability.

Proactive Maintenance

Industry

Scheduled inspections and repairs performed before equipment fails, reducing costly downtime on job sites. Subcontractors who offer proactive maintenance services can secure longer-term service agreements with operators. It also helps avoid liability tied to unexpected breakdowns during active contracts.

Competitive Tender

Industry

A formal process where a client or prime contractor solicits bids from multiple subcontractors for a defined scope of work. Subcontractors submit priced proposals and are evaluated on cost, capability, and safety record. Winning a competitive tender typically requires balancing competitive pricing against maintaining viable margins.

Aggregates

Industry

Crushed stone, gravel, and sand used as base materials in construction and oil and gas site preparation. Subcontractors sourcing or hauling aggregates must account for material costs, transport, and site access conditions. Pricing and availability vary significantly by region and project remoteness.

Crawler Crane

Industry

A large lifting crane mounted on tracked undercarriage, used for heavy lifts on unstable or soft ground at oil and gas and construction sites. Subcontractors often source these through specialised rigging firms on a day-rate or project basis. Confirm ground-bearing capacity and operator certifications before mobilising.

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