Offshore drilling operations conducted in water depths exceeding 1,500 metres. Subcontractors working these projects require specialised certifications, equipment ratings, and offshore survival training. Mobilisation costs and logistics complexity are significantly higher than shallow-water scopes.
Ultra-Deepwater
Related Terms
Compression Expansion
IndustryA growth phase where an operator scales up gas compression infrastructure, creating demand for additional field service crews and equipment. Subcontractors should anticipate increased work orders for installation, commissioning, and maintenance. Securing standing agreements before expansion begins helps lock in preferred vendor status.
Earn-In Agreement
IndustryA deal where a subcontractor gains equity or a stake in a project by completing defined work or spending milestones. Common in junior oil and gas ventures where cash is tight. Your services effectively buy you into the asset rather than just earning a fee.
Progressive Design-Build
IndustryA project delivery method where design and construction phases overlap, with the owner and contractor collaborating before scope is fully defined. Subcontractors are often brought on early, meaning scope, pricing, and schedules can shift as design matures. Contracts may be cost-reimbursable at first, then convert to fixed-price once scope is confirmed.
Class 8 Truck
IndustryThe heaviest commercial truck classification, with a gross vehicle weight rating over 33,000 lbs. Includes semi-trucks, tankers, and heavy haulers commonly used to move equipment and materials on job sites. Operators require a Class 1 commercial driver's licence in Canada.
TVD (True Vertical Depth)
IndustryThe straight-line vertical distance from surface to a specific point in a wellbore, regardless of how the well is drilled — subcontractors working on directional or horizontal wells need to reference TVD (not measured depth) when scoping equipment reach, calculating hydrostatic pressures, or verifying work zone depths on service orders.
Midstream
IndustryThe segment of the oil and gas industry involved in processing, storing, and transporting oil, gas, and NGLs. Includes pipelines, gathering systems, and processing plants.
Latest Industry News
Foresea Lands $465M Petrobras Drillship Contract for Ultra-Deepwater Campaign
Foresea has secured a $465 million contract from Petrobras to operate the ODN I drillship offshore Brazil, with work starting in early 2027 on a 1,443-day campaign supporting the Mero consortium.
6 months agoIndustrySonadrill Secures 480-Day Extension for Quenguela Drillship Offshore Angola
Sonadrill has locked in roughly 480 days of additional work for the ultra-deepwater drillship Sonangol Quenguela offshore Angola, keeping the rig contracted through June 2028 under a seven-well priced option exercise.
6 months agoIndustrySaipem's FlatFish Autonomous Drone Clears Final Testing, Heads to Deepwater Deployment
Saipem's FlatFish underwater inspection drone passed Functional Acceptance Tests with Petrobras and is now approved for deployment in Brazil's ultra-deepwater fields, signaling a shift in how subsea inspection work gets done.
6 months agoIndustryWoodside Begins 24-Well Trion Campaign in Gulf of Mexico
Woodside and PEMEX launch $1B+ ultra-deepwater drilling program creating opportunities for Gulf Coast service companies and supply vessel operators.
7 months agoRelated Guides
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When operators merge, get acquired, or sell assets, subcontractor agreements are caught in the middle. Learn how M&A activity affects your MSA, payment terms, vendor status, and what to do before, during, and after a deal closes.
Industry GuideHow Rig Count Trends Affect Subcontractor Demand and What to Do About It
Rig counts are the earliest signal of where field service work is heading. Learn how to read drilling activity trends, anticipate demand shifts, and position your crew before the phone stops ringing.
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