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IndustryGlossary Term

Gas Processing

The treatment of raw natural gas to remove impurities and separate saleable products like propane and condensate. Processing plants are major work sites for subcontractors providing maintenance, instrumentation, and turnaround services. Scopes can be large and ongoing, making them reliable sources of repeat field work.

Related Terms

Tolerance Zone

Industry

The acceptable range of variation allowed in measurements, materials, or workmanship on a job site. Subcontractors must stay within these limits or face rework orders and cost penalties. Specs are set by the prime contractor or engineering drawings.

Marine Construction

Industry

Offshore and nearshore infrastructure work including platform installation, subsea pipelines, and dock or jetty builds. Subcontractors often face strict vessel access requirements and marine safety certifications. Mobilisation costs and weather delays are major contract risk factors.

Forward Operating Location

Industry

A temporary staging base positioned close to active work sites, used to store equipment, house crews, and coordinate field operations. Subcontractors often mobilise from an FOL rather than returning to a main facility daily. This reduces travel time and keeps personnel and resources on standby near the job.

Aeroderivative Turbine

Industry

A lightweight gas turbine adapted from jet engine technology, used for power generation and compression on oil and gas sites. Subcontractors are often called in for maintenance, hot-section inspections, and component exchanges. These units start up quickly and are common on remote or temporary installations.

Exploratory Well

Industry

A well drilled in an unproven area to determine whether hydrocarbons are present, typically representing higher-risk, shorter-duration work for subcontractors with less certainty of follow-on contracts compared to development drilling programmes. Field service companies should account for the speculative nature of these projects when negotiating mobilisation costs and contract terms.

Deepwater

Industry

Refers to offshore oil and gas operations conducted in water depths exceeding 300 metres, where subcontractors and field service crews must hold specialised certifications, work within stricter regulatory frameworks, and often face extended mobilisation timelines and higher equipment day-rates.

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