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IndustryGlossary Term

High-Impact Well

A well with significant technical complexity, cost, or strategic value to the operator. For subcontractors, these projects typically involve stricter oversight, specialised equipment, and higher performance expectations. Mobilisation windows and crew qualifications are often scrutinised more closely.

Related Terms

Material Takeoff

Industry

A detailed list of all materials, quantities, and specifications needed to complete a scope of work. Subcontractors use it to prepare accurate bids and avoid costly shortages or overruns in the field.

Mud Logging

Industry

A well-site service that monitors drilling fluid returns to detect hydrocarbons and analyse formation data in real time. Subcontractors provide specialised technicians and instrumentation units for this work. It is commonly scoped as a standalone package within a drilling contract.

Refinery Throughput

Industry

The volume of crude oil a refinery processes over a set period, typically measured in barrels per day. Higher throughput means more maintenance, turnaround, and inspection work for subcontractors. Expect busier scopes and tighter schedules when a client ramps up processing capacity.

Trenchless

Industry

A method of installing or repairing underground pipelines and conduits without open excavation. Techniques include horizontal directional drilling (HDD) and pipe bursting. Subcontractors working trenchless scopes need specialised equipment and certified operators.

Drillship

Industry

A self-propelled vessel equipped with a drilling rig used for offshore exploration and production in deepwater locations, which subcontractors may be mobilised to for specialised services such as equipment maintenance, inspection, or crew support under strict offshore safety and logistical requirements.

PPA (Power Purchase Agreement)

Industry

A long-term contract where a buyer agrees to purchase electricity from a generator at a fixed price. For subcontractors, PPAs on large sites can affect whether temporary or permanent power infrastructure is in scope. Understanding site power arrangements helps clarify mobilisation costs and equipment requirements.

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