A subcontractor hired to perform one specific, clearly defined scope of work on a project. They operate independently from other trades and are not responsible for coordinating adjacent scopes. This structure limits liability exposure but also restricts opportunities to capture additional work on site.
Single-Scope Contractor
Related Terms
Hydraulic Fracturing
IndustryA well stimulation process where fluid is pumped at high pressure to crack subsurface rock and release oil or gas. Subcontractors are commonly engaged for pump operations, fluid handling, and equipment transport during frac campaigns. Work is often fast-paced and shift-intensive, with strict site access and safety requirements.
Full-Depth Reclamation
IndustryA road rehabilitation method where the full pavement structure is pulverised and mixed with the subgrade to create a stabilised base. Subcontractors use specialised reclaimers and stabilisers to complete the work in a single pass. It is common on oilfield lease roads and remote access routes requiring cost-effective repair.
Tubular Running
IndustryThe process of installing pipe, casing, or tubing strings into a wellbore during drilling or completion operations. Subcontractors providing tubular running services supply specialised crews and equipment such as power tongs and elevators. Accurate job scoping is critical, as rig time is costly and delays directly affect invoicing and contract performance.
TOFD (Time-of-flight Diffraction)
IndustryAn ultrasonic weld inspection method used to detect and size internal flaws in pipelines and pressure vessels. Subcontractors performing NDT work must hold TOFD-specific certifications to qualify for this scope. It is widely accepted by regulators as an alternative to radiographic testing.
Processing Capacity
IndustryThe maximum volume of oil, gas, or fluids a facility can handle within a given timeframe. For subcontractors, it determines the pace and scale of your scope of work on site. Exceeding this limit causes bottlenecks that can delay schedules and trigger penalties.
Unconventional
IndustryRefers to oil and gas extracted from tight rock formations requiring hydraulic fracturing or horizontal drilling. For subcontractors, unconventional work typically means large multi-well pad sites with high crew and equipment demands. Expect fast-paced rotational schedules and specialised service requirements.
Latest Industry News
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