A large lifting crane mounted on tracked undercarriage, used for heavy lifts on unstable or soft ground at oil and gas and construction sites. Subcontractors often source these through specialised rigging firms on a day-rate or project basis. Confirm ground-bearing capacity and operator certifications before mobilising.
Crawler Crane
Related Terms
Force Majeure
IndustryA contract clause that excuses a party from performing obligations due to extraordinary events beyond their control, such as natural disasters or pandemics. For subcontractors, it can mean suspended work orders without compensation. Always review how your prime contract defines triggering events before signing.
Interoperability
IndustryThe ability of different software systems, tools, or equipment to work together without manual workarounds. For subcontractors, this means your timesheets, invoicing, and reporting tools can connect directly with a prime contractor's systems. It reduces double-entry errors and speeds up approvals and payments.
NOC (National Oil Company)
IndustryA state-owned oil producer that controls exploration and production within its country. NOCs often require local content compliance, affecting subcontractor hiring and procurement. Payment cycles and approval chains can be longer than with private operators.
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.
Production Liner
IndustryA casing string run inside an existing wellbore to line the productive zone without extending to surface. Subcontractors are often mobilised for liner running, cementing, and pressure testing during completion operations. Work is typically time-sensitive and tied to rig-day rates.
Commissioning
IndustryThe phase where completed systems and equipment are tested, verified, and handed over to the client as fully operational. For subcontractors, it often means intensive punch-list work, inspections, and sign-offs before demobilisation. Scope creep is common during this phase, so track all additional hours carefully.
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