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IndustryGlossary Term

Pad Construction

The process of building a level gravel or compacted surface to support drilling rigs, equipment, and site infrastructure. Subcontractors are often mobilised early to complete pad work before main drilling operations begin. Delays in pad construction can push back entire project schedules and affect downstream crew mobilisation.

Related Terms

Petrophysical Analysis

Industry

The evaluation of reservoir rock and fluid properties using well log data and core samples. Results determine whether a well is worth completing, directly affecting drilling programme scope and subcontractor workload. Field crews support this work through wireline logging, coring, and fluid sampling operations.

AFE (Authorization for Expenditure)

Industry

A budgeting document used in oil and gas projects that outlines expected costs and seeks approval before work begins. Subcontractors often work under AFEs issued by operators.

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.

Marine Foundation

Industry

A structural base system that anchors offshore platforms, wind turbines, or subsea equipment to the seabed. Subcontractors may support installation, inspection, or repair work on pile-driven, gravity-based, or suction caisson foundations. Scope can include diving services, grouting, and non-destructive testing.

Antifriction Bearing

Industry

A bearing that uses rolling elements — balls or rollers — to reduce friction between moving parts. Common in pumps, motors, and rotating equipment on job sites. Subcontractors should inspect and replace these during scheduled maintenance to avoid unplanned downtime.

Long-Lead Items

Industry

Equipment or materials requiring extended procurement timelines, often months ahead of project start. Subcontractors must identify these early to avoid costly schedule delays. Late orders can stall mobilisation and trigger liquidated damages clauses.

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