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IndustryGlossary Term

Heavy Civil

Large-scale infrastructure construction involving earthworks, bridges, roads, and foundations. Subcontractors in this sector typically supply specialised equipment, civil crews, or concrete services. Contracts are often high-value but require significant bonding and insurance capacity.

Related Terms

Vertical Mast Lift

Industry

A type of aerial work platform that raises personnel or materials straight up on a single mast column. Commonly used in confined or tight job sites where boom lifts cannot manoeuvre. Subcontractors must verify operator certifications and load ratings before mobilising.

Operator

Industry

The company that holds the rights to develop an oil and gas property and manages day-to-day operations. Operators hire subcontractors and service companies to perform various tasks.

Telematics

Industry

A system that tracks vehicle and equipment location, usage, and performance data in real time. Subcontractors use it to monitor fleet activity, verify hours worked, and support billing accuracy. It also aids compliance with safety and maintenance requirements.

CSG (Casing)

Industry

Steel pipe installed in a wellbore to provide structural integrity and prevent contamination between different geological formations, requiring specialized installation and cementing services that subcontractors frequently provide during drilling operations.

Workover

Industry

Operations performed on an existing well to restore, maintain, or improve production. Includes activities like recompletions, artificial lift installation, and remedial cementing.

TVD (True Vertical Depth)

Industry

The straight-line vertical distance from surface to a specific point in a wellbore, regardless of how the well is drilled — subcontractors working on directional or horizontal wells need to reference TVD (not measured depth) when scoping equipment reach, calculating hydrostatic pressures, or verifying work zone depths on service orders.

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