When a project owner shortens the original timeline without reducing scope. Subcontractors must mobilise more crew, run shifts, or overlap tasks to meet the new dates. This often triggers overtime costs and equipment conflicts that may not be covered under the original contract.
Schedule Compression
Related Terms
Fractionation
IndustryThe process of separating raw natural gas into sellable components like propane, butane, and ethane at a processing facility. Subcontractors often support fractionation plants through instrumentation, maintenance, and turnaround work. Understanding the process helps crews align their scope with plant operating priorities.
FID (Final Investment Decision)
IndustryThe point when a project owner formally approves funding and commits to proceeding with a major project. For subcontractors, FID is the trigger that converts preliminary work into confirmed scopes and purchase orders. Mobilisation planning, crew hiring, and equipment sourcing typically begin after FID is announced.
Field Ticket
IndustryA document created in the field that records work performed, equipment used, materials consumed, and time spent. Field tickets are the basis for invoicing and must typically be approved by the customer before payment.
Spud Date
IndustryThe date when drilling begins on a new well. Marks the start of drilling operations.
FFS (Fitness-for-service)
IndustryA structured engineering assessment that determines whether ageing or damaged equipment is safe to keep operating. Subcontractors are often hired to collect inspection data, run integrity tests, or execute repairs recommended by FFS evaluations. Understanding FFS scope helps field crews prioritise work orders and meet client fitness thresholds before returning assets to service.
JV (Joint Venture)
IndustryA formal business arrangement where two or more companies partner to pursue a specific project or contract, which can affect subcontractors by changing who issues purchase orders, approves invoices, or holds liability on site. Field service companies should confirm early which JV partner is the contracting entity to avoid payment delays or scope disputes.
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