A shared 3D digital model of a construction project that contains structural, mechanical, and site data. Subcontractors use it to coordinate work sequences, avoid clashes with other trades, and verify installation specs before mobilising. Access to the BIM model is often required before entering a worksite.
BIM (Building Information Modelling)
Related Terms
Appraisal Drilling
IndustryDrilling program that follows an initial discovery to confirm reservoir size and commercial viability. For subcontractors, it means short-term, high-intensity scopes between exploration and full development phases. Mobilisation windows can be tight and contract durations unpredictable.
Owner-Formed Alliance
IndustryA long-term agreement where an owner operator selects a fixed group of contractors to handle ongoing work. Subcontractors inside the alliance get preferred access to scopes but must meet strict performance and pricing benchmarks. Those outside the alliance are often locked out of bidding entirely.
TVD (True Vertical Depth)
IndustryThe 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.
Tank Farm
IndustryA 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.
SAGD (Steam Assisted Gravity Drainage)
IndustryA heavy oil extraction method using paired horizontal wells where steam is injected into the upper well to heat bitumen, allowing it to drain by gravity to the lower production well. Creates specialized maintenance and service opportunities for subcontractors in steam generation equipment, wellhead systems, and pipeline infrastructure at oil sands operations.
Workover
IndustryOperations performed on an existing well to restore, maintain, or improve production. Includes activities like recompletions, artificial lift installation, and remedial cementing.
Latest Industry News
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A T&D World webinar summary says utilities should bring contractors in when engineering is 10% to 30% complete and treat site access as engineering. Here is what that means for crews and yard commitments.
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