Cook Inlet

A measure of how much oil a well or facility produces daily. Operators use Bbl/d targets to schedule field service crews and equipment. Higher Bbl/d often means more maintenance contracts and longer mobilisation windows for subcontractors.

To identify and remove constraints limiting throughput or efficiency on a project or facility. For subcontractors, this often means mobilising additional crews or equipment to clear backlogs. Work is typically urgent and can command premium rates.

All supporting systems and infrastructure outside the primary process equipment, such as electrical, piping, HVAC, and civil works. For subcontractors, BOP (Balance-of-Plant) scope often represents the bulk of awarded field labour. Knowing what falls under BOP helps avoid scope gaps and missed bid items.

A utility or pipeline operator's fast-tracked assessment to connect new energy infrastructure to the grid or network. For subcontractors, an approved ERAS often signals upcoming mobilisation opportunities and tight project timelines. Winning work tied to an ERAS typically means compressed schedules and rapid crew deployment.

A rubber-tracked, skid-steer-style machine used for grading, excavating, and material handling on tight or soft job sites. Subcontractors commonly mobilise CTLs for site prep, trenching support, and backfill work. Their compact footprint makes them well-suited for restricted-access oil and gas and construction sites.

A series of vessels and equipment that separates wellhead fluids into oil, gas, and water. Subcontractors are often scoped to one train at a time, so know which train your work order covers. Shutdowns or upsets on your train can directly affect your crew's schedule and completion milestones.

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An AFE (Authorization for Expenditure) controls every dollar spent on an oilfield project. Learn how it affects your billing, change orders, and cash flow as a subcontractor.