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IndustryGlossary Term

Pad Drilling

A method where multiple wells are drilled from a single surface location, or pad. For subcontractors, this means sustained, back-to-back work cycles with minimal rig-up and tear-down time. Efficient mobilisation and crew scheduling are critical to maintaining productivity across the pad.

Related Terms

Combined-Cycle Gas Plant

Industry

A power generation facility that uses both gas turbines and steam turbines to maximise efficiency. For subcontractors, these sites involve complex, multi-discipline scopes across mechanical, electrical, and instrumentation trades. Outage and commissioning work is highly scheduled, requiring precise crew coordination and fast mobilisation.

Transmission Tie-in

Industry

A connection point where a new pipeline is joined to an existing high-pressure transmission system. Subcontractors typically handle welding, purging, and pressure testing during a planned outage window. Tie-in scopes often require strict scheduling coordination and certified welding procedures.

Deepwater Export Terminal

Industry

An offshore facility in deep water where oil or gas is transferred from production infrastructure to tankers or pipelines for transport. For subcontractors, these sites require specialised marine certifications and offshore safety training. Mobilisation costs are high, so confirm day-rate structures and expense recovery terms before committing crews.

Borrow Material

Industry

Soil, gravel, or fill excavated from one location and transported to another for grading or earthwork. Subcontractors may need to source, haul, and place borrow material as part of site prep scopes. Confirm who supplies and pays for it before signing your contract.

Transmission Corridor

Industry

A designated strip of land reserved for pipelines, power lines, or utility infrastructure. Subcontractors must obtain right-of-entry approvals before mobilising equipment or crews within these zones. Work inside corridors often triggers additional environmental and regulatory compliance requirements.

Surface Milling

Industry

A machining process that removes material from a flat surface to restore or achieve precise tolerances on equipment components. Subcontractors are often mobilised to perform surface milling on wellheads, flanges, or structural steel on-site. Proper equipment certifications and dimensional records are typically required for handover documentation.

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