Dredging

A rock formation made of compacted sediment fragments — like sandstone or conglomerate — that holds oil or gas. Most drilling and completions work in Western Canada targets clastic reservoirs. Knowing the formation type helps crews anticipate ground conditions and equipment requirements.

Pipelines that collect oil, gas, or water from individual wellheads and route it to a central processing facility. Subcontractors frequently work on installation, inspection, and maintenance of these lines. Knowing the layout is essential for safe excavation and tie-in work.

A mechanical fitting that connects hoses, pipes, or hydraulic lines without tools or threading. Common on wellsite and construction equipment, they allow fast swaps between attachments or fluid systems. Subcontractors should verify coupler compatibility before mobilising to avoid costly downtime.

The process of connecting new pipelines, equipment, or infrastructure to an existing operating facility. For subcontractors, tie-in work often requires strict hot-work permits and coordinated shutdowns with the operator. Scope can expand quickly, so clear change-order procedures are essential before mobilising.

A chemical additive injected into pipelines to reduce turbulence and increase flow rates without adding compression. Subcontractors handling pipeline operations or chemical injection work may be scoped to install, maintain, or monitor DRA injection skids. Understanding DRA systems helps crews execute chemical handling tasks safely and meet operator flow assurance targets.

Refers to the contiguous United States, excluding Alaska and Hawaii. For subcontractors, it defines a common work jurisdiction with distinct regulatory, tax, and labour rules from Canadian or Alaskan operations. Mobilisation costs and compliance requirements differ significantly when crews cross into or out of this region.

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