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Industry Glossary Term

Run Schedule

A timeline that outlines when specific tools, equipment, or crews are deployed downhole or on-site during an operation, dictating when a subcontractor's services are required and for how long. For field service companies, the run schedule directly determines mobilisation timing, crew rotations, and invoiceable hours on location.

Related Terms

Tied-Arch

Industry

A bridge or structural design where a curved arch is connected to a horizontal tension member, preventing the arch from spreading. Subcontractors may encounter tied-arch structures on pipeline crossings, access bridges, or heavy industrial sites. Rigging, lifting, and load planning must account for the unique stress distribution in these structures.

Shaker Screen

Industry

A mesh filter used in drilling operations to separate rock cuttings and solids from drilling fluid (mud). Subcontractors handling fluid management or solids control equipment must monitor screen condition closely. Worn or damaged screens reduce efficiency and can trigger costly downtime charges.

Brownfield

Industry

An existing facility—such as a producing well, pipeline, or plant—being modified, upgraded, or maintained rather than built from scratch. For subcontractors, brownfield work often means tighter workspaces, live equipment hazards, and stricter site access requirements. Scopes can change quickly due to unforeseen conditions uncovered during work.

LWD (Logging While Drilling)

Industry

A drilling technique that collects formation data in real time as the bit advances. Subcontractors providing LWD services operate specialised downhole tools that transmit data to surface during the drill run. Mobilisation windows are tight, so crews and equipment must be ready on short notice.

Demand Destruction

Industry

A permanent drop in demand for oil, gas, or construction services, often caused by high prices or economic shifts. Unlike a temporary slowdown, destroyed demand means work volumes may never fully recover. Subcontractors should treat it as a signal to diversify their client base or service offerings.

WTI (West Texas Intermediate)

Industry

A global benchmark crude oil price used to gauge market health and operator spending confidence. When WTI prices drop, clients often freeze or cut field service contracts and budgets. Rising WTI typically signals more work and stronger mobilisation activity for subcontractors.

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