Large-scale pipelines, compressor stations, and related facilities that move oil, gas, or power across long distances. Subcontractors are frequently mobilised for construction, inspection, and maintenance work on these assets. Scopes can be extensive, requiring multi-trade crews and strict regulatory compliance.
Transmission Infrastructure
Related Terms
Hydrostatic Testing
IndustryA pressure integrity test where pipelines, vessels, or equipment are filled with water and pressurised to detect leaks or weaknesses. Subcontractors are often hired to perform or witness these tests before commissioning. Proper documentation is critical, as clients and regulators require certified test records.
JV (Joint Venture)
IndustryA formal business arrangement where two or more companies partner to pursue a specific project or contract, which can affect subcontractors by changing who issues purchase orders, approves invoices, or holds liability on site. Field service companies should confirm early which JV partner is the contracting entity to avoid payment delays or scope disputes.
Recommissioning
IndustryThe process of reactivating idle or mothballed equipment and facilities for resumed operations. Subcontractors are often mobilised to inspect, test, and restore systems to operational standards. Scope can be extensive, requiring multi-trade crews and detailed documentation.
Pre-Salt
IndustryRefers 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.
Negative Gas Prices
IndustryOccurs when oversupply forces producers to pay buyers to take gas, signalling severe market stress. For subcontractors, this often triggers rapid project suspensions, deferred work orders, and delayed payments. Expect scope reductions and early contract terminations when prices turn negative.
MWD (Measurement While Drilling)
IndustryA real-time data acquisition process used during directional drilling that transmits downhole measurements — such as wellbore trajectory, formation data, and tool orientation — to surface crews without interrupting operations. For subcontractors, MWD services represent a specialised scope of work requiring certified technicians and dedicated equipment, often billed as a separate line item on drilling contracts.
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