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Industry Glossary Term

OD (Outer Diameter)

The measurement across the outside of a pipe, casing, or tubular component. Subcontractors use OD to specify compatible fittings, tools, and equipment on job sites. Mismatched ODs can cause costly delays and safety issues in the field.

Related Terms

Step-Out Drilling

Industry

Drilling wells at increasing distances from a proven discovery to test the boundaries of a reservoir. For subcontractors, it signals extended mobilisation cycles and potential new work corridors. Expect shifting logistics, camp requirements, and crew rotations as operators push further from existing infrastructure.

WCSB (Western Canadian Sedimentary Basin)

Industry

A vast sedimentary basin spanning BC, Alberta, Saskatchewan, and Manitoba that hosts Canada's largest oil and gas reserves. It is the primary operating region for most Canadian upstream field service subcontractors. Work here includes conventional drilling, oil sands operations, and pipeline construction.

Wireline Logging

Industry

A data-gathering service where specialised tools are lowered into a wellbore on a cable to measure formation properties. Subcontractors often provide the crew, equipment, and vehicles supporting these operations. Accurate job records are critical, as logging runs directly affect well completion decisions.

Shovel-Ready

Industry

A project with permits, funding, and engineering approved, allowing field work to begin immediately. For subcontractors, it signals that mobilisation and contract awards are imminent. Pursuing shovel-ready work reduces the risk of scoping delays eating into your margins.

Single-Scope Contract

Industry

A contract that limits a subcontractor to one defined service or trade, such as civil work or instrumentation. It prevents scope creep by clearly separating responsibilities between contractors. This structure helps subcontractors price accurately and avoid liability for work outside their expertise.

Advanced Conductors

Industry

Large-diameter steel casings driven into the ground before main drilling begins to stabilise the wellbore and prevent surface collapse. Subcontractors involved in conductor installation, welding, or pile-driving work are typically mobilised in this early phase. Securing this scope early can anchor longer project commitments on a well site.

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