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IndustryGlossary Term

First Gas

The milestone when a gas facility produces and delivers its first commercial volumes. For subcontractors, it signals the end of construction-phase work and the shift to operations-phase contracts. Billing terms, crew rotations, and scope of work often change significantly at this point.

Related Terms

IEA (International Energy Agency)

Industry

An intergovernmental organisation that publishes global energy outlooks and demand forecasts, which subcontractors and field service companies use to anticipate shifts in upstream and downstream activity levels that may affect project pipelines and contract opportunities.

Thermal Resource Fleet

Industry

A subcontractor's collection of heat-generating equipment, such as steam generators, line heaters, and freeze protection units. These assets are mobilised for cold-weather operations, pipeline conditioning, or process heating on oil and gas sites. Fleet size directly affects a subcontractor's capacity to bid on thermal service contracts.

Completions

Industry

The phase of oil and gas well development after drilling is finished, encompassing the work required to prepare a well for production — including perforating, fracturing, and installing wellhead equipment. For subcontractors, completions represent a concentrated burst of high-demand field work where specialised crews, equipment, and services are mobilised under tight timelines.

Service Company

Industry

A company that provides specialized services to oil and gas operators, such as drilling, completions, workover, transportation, or maintenance. Also called oilfield services (OFS).

Master Service Agreement (MSA)

Industry

A contract between an operator and a service company that establishes the general terms and conditions for all future work. Individual jobs are then executed under work orders or AFEs referencing the MSA.

Caustic Service

Industry

Work involving equipment or piping that handles highly alkaline chemicals, such as sodium hydroxide. Subcontractors must use compatible materials and certified personnel to avoid rapid corrosion and serious chemical burns. Specialised PPE and handling procedures are typically required by the client's safety plan.

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