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Industry Glossary Term

Trenchless Contractor

A subcontractor specialising in underground utility or pipeline installation without open excavation. Methods include HDD (Horizontal Directional Drilling) and pipe bursting. These firms are commonly hired on oil and gas, municipal, and construction projects where surface disruption must be minimised.

Related Terms

Interconnection Agreement

Industry

A contract governing how a facility or system connects to a larger network, such as a pipeline or power grid. For subcontractors, it defines technical requirements and responsibilities during tie-in work. Non-compliance can trigger delays, penalties, or scope disputes.

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.

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.

Spud Date

Industry

The date when drilling begins on a new well. Marks the start of drilling operations.

Subcontractor

Industry

A company hired by a general contractor or directly by an operator to perform a specific portion of work. Subcontractors often specialize in particular services or trades.

EPC (Engineering, Procurement, Construction)

Industry

A project delivery model where one main contractor handles all phases from design to completion, typically creating multiple subcontracting opportunities for field service companies across different project phases. For subcontractors, EPC projects often mean working under a prime contractor who coordinates all trades and manages the overall timeline and specifications.

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