The section of casing or liner that has been shot through with charges to allow hydrocarbons to flow into the wellbore. Subcontractors working completions or workovers need to know the perforated interval to plan fluid placement and tool runs accurately.
Perforated Interval
Related Terms
CCUS (Carbon Capture, Utilization, and Storage)
IndustryTechnology that captures CO₂ emissions from industrial sites and either stores or repurposes them. Subcontractors are increasingly hired to build, maintain, and service CCUS infrastructure. Familiarity with these projects opens doors to growing work in emissions-reduction programmes.
SCADA (Supervisory Control and Data Acquisition)
IndustryA control system that monitors and manages field equipment like pipelines, compressors, and wellheads in real time. Subcontractors working on SCADA-connected sites must follow strict access and cybersecurity protocols. Your work may trigger automated alarms or shutdowns if procedures aren't followed precisely.
CSG (Casing)
IndustrySteel 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.
Straddle Plant
IndustryA midstream processing facility installed along an existing pipeline to extract natural gas liquids like propane and butane. Subcontractors are frequently mobilised for construction, maintenance, and turnaround work at these sites. Work scopes often include compression, refrigeration, and fractionation system servicing.
Debottlenecking
IndustryThe process of identifying and removing constraints that slow production or operations on a job site. For subcontractors, this often means short-term scopes to upgrade equipment, piping, or workflows. Debottlenecking projects can generate fast-mobilisation work but typically run on tight timelines.
Capital Maintenance Agreement
IndustryA long-term contract where a subcontractor provides scheduled upkeep and repairs on a client's major assets or facilities. Work scopes, pricing, and mobilisation terms are typically locked in advance. These agreements offer subcontractors predictable revenue but may limit flexibility to take on other work.
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