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Industry Glossary Term

Equipment Uptime

The percentage of scheduled time that equipment is operational and available for use on a job site. For subcontractors, high uptime directly affects billing hours, client satisfaction, and contract renewals. Downtime caused by mechanical failure or poor maintenance often falls on the subcontractor to remedy at their own cost.

Related Terms

Geothermal Brine

Industry

Highly mineralised, hot saltwater extracted from underground geothermal reservoirs during energy production. Subcontractors handling it must follow strict corrosion control and PPE protocols. Disposal and handling are heavily regulated due to its chemical content.

TVD (True Vertical Depth)

Industry

The straight-line vertical distance from surface to a specific point in a wellbore, regardless of how the well is drilled — subcontractors working on directional or horizontal wells need to reference TVD (not measured depth) when scoping equipment reach, calculating hydrostatic pressures, or verifying work zone depths on service orders.

Exploratory Well

Industry

A well drilled in an unproven area to determine whether hydrocarbons are present, typically representing higher-risk, shorter-duration work for subcontractors with less certainty of follow-on contracts compared to development drilling programmes. Field service companies should account for the speculative nature of these projects when negotiating mobilisation costs and contract terms.

Throughput

Industry

The volume of work or units a crew completes within a set timeframe. Higher throughput means more billable output per shift, directly affecting your contract profitability. Subcontractors often track throughput to justify crew sizes and equipment needs.

GC (General Contractor)

Industry

The prime contractor hired by an owner to manage a project, responsible for awarding and overseeing subcontracts. As a sub, your contract, invoicing, and site access typically flow through the GC. They control your payment terms and schedule, making them your primary business relationship on site.

HDD (Horizontal Directional Drilling)

Industry

A trenchless method used to install pipelines, conduits, or cables beneath obstacles like roads, rivers, or existing infrastructure. Subcontractors are typically engaged for the drill crew, mud mixing, and equipment operation. Scopes are highly specialised and often require certified operators and dedicated HDD spreads.

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