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Industry Glossary Term

E&I (Electrical and Instrumentation)

A trade discipline covering the installation, maintenance, and commissioning of electrical systems and process instrumentation on industrial sites. Subcontractors in this scope typically hold specialised certifications and work across upstream, midstream, and construction projects. E&I scopes are commonly tendered separately from mechanical or civil work.

Related 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.

Spud Date

Industry

The date when drilling begins on a new well. Marks the start of drilling operations.

Upstream

Industry

The segment of the oil and gas industry involved in exploration and production (E&P). Includes drilling, completions, and well operations.

Bakken Play

Industry

A major tight-oil producing region spanning North Dakota, Montana, and southern Saskatchewan and Manitoba. Subcontractors working here should expect high-volume horizontal drilling and multi-stage fracturing scopes. Seasonal road bans and remote logistics significantly impact crew mobilisation and equipment scheduling.

Pressure Pumping

Industry

A well stimulation service involving the high-pressure injection of fluids — such as fracturing fluid, cement, or acid — into a wellbore to improve production or complete the well; for subcontractors, it represents a specialised, equipment-intensive scope of work that typically requires certified operators, dedicated pump trucks, and close coordination with the primary operator on site.

Turnaround

Industry

A planned shutdown of a facility for maintenance, inspection, and repair. Turnarounds often require large numbers of contractors and subcontractors working intensive schedules.

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