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Industry Glossary Term

Wellfield

A defined area containing multiple wells and associated surface infrastructure operated as a single development. Subcontractors often mobilise across an entire wellfield under one master contract, servicing several wellsites in rotation. Scope, travel, and logistics planning should account for the full wellfield footprint.

Related Terms

Long-Span Structural Systems

Industry

Structural frameworks that cover large distances without intermediate supports, such as trusses, arches, or space frames. Subcontractors encounter these in industrial buildings, processing facilities, and modular plant construction. Work in these areas often requires specialised rigging, elevated access planning, and load-path awareness.

Long-Lead Procurement

Industry

The advance ordering of materials or equipment with lengthy manufacturing or delivery timelines. For subcontractors, delays in these items often push back mobilisation dates and affect project cash flow. Always confirm long-lead delivery schedules before locking in your crew start dates.

Rig Utilization

Industry

The percentage of time a rig is actively working versus sitting idle. For subcontractors, high rig utilisation means steady billable hours and predictable revenue. Low utilisation signals contract gaps that strain cash flow and crew retention.

Pad Construction

Industry

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.

Basemat

Industry

The reinforced concrete foundation slab supporting a structure's entire load. Subcontractors doing civil or concrete work often mobilise early to complete basemat pours before other trades arrive. Scheduling and cure time directly affect downstream scopes.

Pigging

Industry

The process of running a device called a pig through a pipeline to clean, inspect, or displace fluids. Subcontractors are often hired to provide pig launcher and receiver equipment, operators, and associated support services. Pigging scopes can range from routine maintenance runs to complex inline inspection campaigns.

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