SPE (Society of Petroleum Engineers)

A method of tracking an underground drill head's position by walking the surface above it with a handheld receiver. The receiver picks up a signal from a transmitter housed in the drill head. Subcontractors use this to guide directional boring and confirm depth in real time.

Fixing or restoring equipment and structures at their installed location, without removal or shutdown. Subcontractors performing in-situ work often command premium rates due to specialised techniques and confined-space conditions. Scope clarity upfront is critical, as discovered defects can significantly expand the job.

A large boiler unit that captures exhaust heat from gas turbines to produce steam for power generation. Subcontractors are commonly engaged for HRSG installation, maintenance, and inspection scopes. Work typically requires certified welders, boilermakers, and compliance with pressure vessel regulations.

Refers to oil reservoirs located beneath thick layers of underground salt, typically in deepwater offshore basins. For subcontractors, pre-salt projects involve specialised equipment, extended mobilisation timelines, and higher operational complexity. Expect longer contract cycles and stricter certification requirements from operators.

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.

A delivery model where a construction manager guarantees a maximum project cost and takes on financial risk if it's exceeded. Subcontractors are hired by the CM, not the owner, making the CM your direct client and contract holder. Your scope, payments, and change orders all flow through the CM.

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