A type of subsurface rock layer—primarily limestone or dolomite—that subcontractors may encounter during drilling, completions, or civil excavation work, often requiring specialised equipment, bit selections, or modified drilling programmes due to its hardness and tendency to cause lost circulation events.
Carbonate Formation
Related Terms
RAP (Reclaimed Asphalt Pavement)
IndustryMilled or crushed material salvaged from existing asphalt surfaces during road removal or rehabilitation work. Subcontractors reuse RAP as base material or blend it into new asphalt mixes, reducing material costs. Proper handling and testing requirements may apply depending on project specs.
Waterflood
IndustryA secondary recovery method where water is injected into a reservoir to push remaining oil toward producing wells. Subcontractors support waterflood projects through injection well services, pump maintenance, and water handling infrastructure. Work scope can be long-term, offering stable recurring contracts.
Load Path Planning
IndustryThe process of mapping how heavy equipment or materials will be moved from origin to job site. Subcontractors must identify weight limits, road restrictions, and permit requirements along the route. Poor planning causes costly delays, fines, or equipment damage.
BPD (Barrels Per Day)
IndustryA measure of a well's or facility's daily oil output. Higher BPD typically means greater activity levels, more crews on site, and increased service demand. Subcontractors often see scope and call-out frequency tied directly to a client's BPD targets.
VDC (Virtual Design and Construction)
IndustryA project delivery approach that combines 3D modelling, scheduling, and cost data into a single digital environment. Subcontractors use VDC to coordinate scope, reduce field conflicts, and plan work sequences before boots hit the ground. Early involvement in VDC workflows can help subs identify clashes, price work more accurately, and avoid costly rework.
Pylon
IndustryA tall structural tower used to support overhead power lines, pipelines, or signage on job sites. Subcontractors may work near pylons during civil, electrical, or pipeline installation scopes. Always verify exclusion zones before mobilising equipment.
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