A massive concrete offshore platform held in place by its own weight rather than piles or anchors. Subcontractors working on CGS projects face complex multi-trade scopes in remote marine environments. Mobilisation, access logistics, and specialised certifications are critical planning factors.
Concrete Gravity Structure
Related Terms
Battery
IndustryA centralised surface facility where oil and gas from multiple wells is gathered, measured, and processed. Subcontractors frequently mobilise to battery sites for maintenance, instrumentation, and civil work. Knowing the battery layout helps crews plan access, logistics, and safe work zones.
Critical Path
IndustryThe sequence of tasks that directly controls a project's completion date. Delays to any critical path activity push the whole project's finish date back. Subcontractors on critical path work face tighter scrutiny and stronger pressure to meet scheduled milestones.
Cementing
IndustryThe process of pumping cement slurry into a wellbore to seal the casing and isolate formation zones. Subcontractors may be hired to provide cementing crews, pumping equipment, or bulk material handling. It is a critical well integrity step with strict regulatory and operator specifications.
Hydrotesting
IndustryA pressure test using water to verify the integrity of pipelines, vessels, or equipment before commissioning. Subcontractors are often scoped separately for hydrotest labour, equipment, and water disposal. Confirm whether these costs are included in your contract or billed as extras.
Chokepoint
IndustryA stage in a project where workflow bottlenecks, delaying downstream tasks and crew productivity. For subcontractors, chokepoints often occur at inspection holds, permit approvals, or material deliveries. Identifying them early helps protect schedule and avoid costly standby time.
Tieback
IndustryA structural anchor or connection point used to secure equipment, pipelines, or wellheads back to an existing infrastructure system, commonly referenced in subcontractor scopes of work when connecting new installations to live or existing lines. Subcontractors should confirm tieback specifications and isolation procedures clearly in their contracts, as this work often involves elevated risk and may require additional certifications or permits.
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