A tie-in point where two or more pipelines are joined to allow fluid or gas transfer between systems. Subcontractors are often mobilised for the hot-tap, welding, and pressure-testing work at these connections. Scope can expand quickly, so confirm tie-in specifications before pricing the job.
Pipeline Interconnect
Related Terms
Artificial Lift
IndustryA system used to boost production from oil wells that lack sufficient natural pressure to bring fluids to surface. Common methods include rod pumps, ESPs (Electric Submersible Pumps), and gas lift. Subcontractors are often mobilised to install, service, or troubleshoot these systems throughout a well's producing life.
Well Pairs
IndustryTwo horizontal wells drilled together — one injector, one producer — used in SAGD (Steam-Assisted Gravity Drainage) operations. Subcontractors often mobilise crews and equipment to service both wells simultaneously. Expect back-to-back work scopes and coordinated scheduling across a shared pad site.
GWD (Getting Work Done)
IndustryA safety and compliance management system used by some operators to pre-qualify and manage contractors working on their sites.
Screening Circuit
IndustryA series of vibrating screens used on-site to separate solids by size from drilling fluids or aggregates. Subcontractors operating or maintaining this equipment must track run-hours carefully for service billing. Screen cloth replacement is a common scope item in solids-control contracts.
In-Service Date
IndustryThe date when equipment or a facility is officially commissioned and begins active operation. For subcontractors, this date often triggers billing milestones, warranty periods, or contract close-out requirements. Missing this date can result in penalties or delayed final payment.
Spot Work
IndustryShort-term, unplanned jobs awarded without a long-term contract, typically filled on short notice. Subcontractors are engaged for a single scope or site visit at a negotiated day rate. Common in shutdown, turnaround, and emergency maintenance situations.
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