OneSubsea

What OneSubsea does

OneSubsea is a private joint venture headquartered in Houston, Texas (with a parallel European headquarters in Oslo/Lysaker, Norway) that delivers integrated subsea production, processing, and life-of-field systems for the offshore oil and gas industry. The company was formed in October 2023 through the combination of the legacy subsea businesses of SLB and Aker Solutions, with ownership split SLB 70%, Aker Solutions 20%, and Subsea7 10%. Its product portfolio spans three groupings: Subsea Production Systems (trees, manifolds, wellheads, SPS control systems, umbilical systems, connection systems, wet connectors), Subsea Processing Systems (boosting pumps, compression, separation, water injection, sampling, subsea power solutions), and Life-of-Field Services (asset performance management, production enhancement, intervention and workover, well abandonment). Two flagship technologies anchor the technical position: the world's first true subsea wet-gas compressor (handling 0-100% liquid fractions, tolerating sand and solids) with over 5.0 million operating hours logged across compression and boosting, and a high-pressure boosting architecture capable of 15,000 psi operation. Digital tools include Subsea Live (an AI- and automation-powered monitoring platform) and Subsea Planner on the SLB Delfi ecosystem. The company operates manufacturing in Norway (Moss for umbilicals, Håsøy for compression/processing) and Brazil (Curitiba for control modules), with project offices across Europe, Africa, Asia Pacific, and the Americas.

The business model is enterprise project-driven: OneSubsea secures large EPC and EPCI contracts directly with major international and national oil companies through competitive bidding and strategic partnerships, with typical contract values of $150 million to $300 million and major awards reaching $1 billion+. Revenue is generated through two principal streams: one-time subsea equipment EPC contracts and recurring life-of-field services spanning asset performance management, intervention, workover, and abandonment. Distribution runs through direct enterprise field sales augmented by the global footprints of the three parent companies (SLB's technology platform and Delfi ecosystem, Aker Solutions' Norwegian manufacturing and engineering, Subsea7's SURF and marine installation network); the Subsea Integration Alliance with Subsea7 delivers end-to-end EPCI capability across the subsea value chain. The customer base consists of deepwater-focused offshore operators including BP, Equinor, Shell, ExxonMobil, CNOOC, PTTEP, Vår Energi, Beacon Offshore Energy, Azule Energy, and PETRONAS, with growing activity in subsea carbon capture and storage (notably Equinor's Northern Lights phase 2). The company holds the #1 position in subsea tree installed base globally and employs over 10,000 subsea-focused personnel.

Name

OneSubsea

Legal name

OneSubsea

Website

https://onesubsea.slb.com

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

OneSubsea is a Houston-based joint venture (SLB 70%, Aker Solutions 20%, Subsea7 10%) that delivers integrated subsea production systems, boosting and compression equipment, umbilicals, and life-of-field services to offshore oil and gas operators globally.

Ownership category

akta.pro rank

Product category

Subsea Oil & Gas Equipment

NAICS

Oil and Gas Field Machinery and Equipment Manufacturing (333132)

SIC

Oil & Gas Field Machinery & Equipment (3533), Oil & Gas Field Services, Nec (1389)

akta.pro primary industry

Subsea Services & Equipment (Subsea Trees, Umbilicals, Installation, IMR) (EUALABAI)

akta.pro secondary industries

Offshore E&P (Shallow/Deepwater, Subsea Production Systems) (EUALAAAI), Production Services & Artificial Lift (ESP, Rod Lift, Gas Lift, Chemicals) (EUALABAH), Completion Tools & Subsurface Equipment (Packers, Liners, Valves, Sand Control) (EUALABAD)

Keywords

• Subsea production systems
• Subsea processing equipment
• Deepwater oil and gas
• Subsea compression systems
• Subsea umbilical systems

Headquarters

HQ city

Sugar Land

HQ country

United States

HQ region

North America

Offices11 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Personnel, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Subsea Equipment EPC Contracts: Engineering, Procurement, and Construction contracts for subsea production systems, boosting systems, compression systems, and associated equipment. Contracts typically range from $150M to $300M for major projects, with larger awards reaching into billions.
2. Subsea Services and Support: Life-of-field services including asset performance management, production enhancement, subsea intervention and workover, and well abandonment services.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

OneSubsea designs, manufactures, and integrates subsea production systems (subsea trees, manifolds, wellheads, control systems), subsea processing systems (subsea compression, boosting pumps, separation, water injection, power solutions), and subsea umbilical systems for offshore oil and gas operators. It also delivers life-of-field services (asset performance management, intervention and workover, well abandonment) and AI-powered digital monitoring solutions (Subsea Live, Subsea Planner on Delfi), with integrated EPC(I) project delivery through the Subsea Integration Alliance with Subsea7.

Product overview

OneSubsea is a joint venture backed by SLB (70%), Aker Solutions (20%), and Subsea7 (10%), created in October 2023. It operates as a platform-plus-modules architecture offering an integrated subsea technology portfolio organized around three core product groupings. Subsea Production Systems (SPS) include subsea trees, manifolds, wellheads, SPS control systems, umbilical systems (steeltube umbilicals, power umbilicals, integrated production umbilicals, direct electrical heating systems), connection systems, and wet connectors. Subsea Processing Systems encompass boosting pumps, compression, separation, water injection, sampling, and power solutions (cooling, substations, junction boxes, power hubs) under a unified processing control system. The Life-of-Field Services portfolio covers asset performance management, production enhancement, subsea intervention and workover (including SWIFT and reinjection systems), and well abandonment. Digital tools Subsea Planner (on the Delfi platform) and Subsea Live provide collaborative planning and AI-powered real-time monitoring. Subsea EPC(I) services are delivered through the Subsea Integration Alliance with Subsea7. Key differentiators include 5.0M+ operating hours in compression and boosting, 10,000 subsea-focused employees, and #1 position in subsea tree installed base worldwide. Notable reference projects include the Ormen Lange subsea compression system (Shell) and Åsgard subsea gas compression (Equinor).

Differentiator

Problem solved

Functional benefit

Products and services

• Subsea Trees Field-proven subsea trees serving as the essential building block for safe and reliable subsea production, designed for extreme temperatures (-18°C to +176°C) and pressures up to 15,000 psi. Available in horizontal, vertical, and tubing-head spool configurations up to 7-inch production bore for deepwater applications.
• Subsea Manifolds Highly configurable subsea manifolds for testing, isolation, sampling, and allocation management, with deepwater capability up to 10,000 ft depths, 15,000 psi pressures, and 175°C temperatures.
• Subsea Wellheads Primary pressure barriers for subsea wells serving as anchor and suspension points and seal elements for casing strings in exploration or production phases. Compatible with vertical or horizontal trees, BOPs, workover systems, and downhole casings; conforming to API Specs 6A and 17D.
• SPS Control Systems Fully integrated subsea control systems enabling full remote operation from the surface, configurable for all water depths and reliable in high-temperature/high-pressure conditions, using copper or fiber-optic systems with common TCP/IP technology.
• Subsea Umbilical Systems Complete portfolio of umbilical systems providing power, controls, and chemical injection fluids to subsea units. Links surface and seafloor equipment, powers subsea boosting and compression systems, and prevents wax and hydrate formation.
• Subsea Processing Systems Complete portfolio covering oil-water separation, gas-liquid separation, gas-liquid multiphase boosting, and water injection. Subsea processing increases production for new field developments, tiebacks, and existing facilities, and can reduce project carbon footprint by more than 50% compared with topside alternatives.
• Subsea Compression Systems Field-proven subsea compression systems providing the industry's highest flowrates and pressure ratios, including the world's first and only true subsea wet-gas compressor for unprocessed multiphase well streams. Uses about 67% less energy than topside compression for 120 km gas tiebacks.
• Subsea Boosting Pumps Multistage centrifugal pumps for increasing well flow and recoverable reserves, suitable for hydrocarbon or water flows on the seabed. Achieve 20%–200% higher flow rates and enable production from otherwise unavailable fields.
• Subsea Separation Efficient gas/liquid and oil/water separation systems with all-electric control, including two- and three-phase separation, electrostatic separators for heavy-oil dehydration, and wellhead desanders and solids accumulators.
• Subsea Power Solutions Modular subsea power components including subsea substations, power hubs, cooling systems, and junction boxes enabling smarter, lighter offshore power infrastructure. Subsea substations are up to seven times lighter than topside alternatives with natural sea cooling.
• Life-of-Field Services Portfolio of services helping unlock full asset potential by accelerating ROI and optimizing production while reducing operational risk and cost. Includes asset performance management, production enhancement, subsea intervention and workover, and well abandonment.
• Subsea Live Digital Platform AI-powered digital solution optimizing subsea asset performance through AI, automation, and OEM expertise. Uses machine learning to extract and action insights from large subsea data volumes for real-time monitoring and remote performance optimization.
• Subsea Planner (on Delfi) Collaborative subsea concept development solution built on SLB's Delfi digital platform, integrating OEM expertise, simulation, and visualization to accelerate project delivery, time to first production, and recovery.
• Subsea EPC(I) Services Engineering, procurement, construction, and installation services delivered through the Subsea Integration Alliance, providing end-to-end delivery of subsea assets from selection and design through operation, reducing risk, revisions, and delays.

Quantifiable outcome

• 20%-200% higher flow rates with subsea boosting
• +4 more outcomes

Named customers12 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability7 records

Feature6 records

Partnerships

Seven partnerships are on record, tiered major, strategic and technology.

• Vår EnergimajorStrategic or Co-development Partner · 22 May 2026Strategic partnership agreement between Vår Energi, Subsea7, and OneSubsea for Goliat Gas Export project ($150M-$300M contract). First award under the strategic partnership covering subsea infrastructure in Barents Sea.
• Envirex Group ASstrategicTechnology or Integration · 11 May 2026Acquisition of Envirex's subsea business completed on May 11, 2026. Strengthens capabilities in subsea control systems, hydraulics, intelligent control software, ROV tooling, and pipeline commissioning solutions. Expected to accelerate deployment of next-generation subsea technologies including umbilical-less and wireless systems.
• Toyo Engineering CorporationstrategicStrategic or Co-development Partner · 15 April 2026MOU signed to explore collaboration in subsea carbon capture and storage (CCS) projects. Partnership combines TOYO's CCS project development and onshore facility engineering with OneSubsea's subsea technology and processing systems. Initial focus on Japan and Southeast Asia.
• PETRONAS Suriname E&PmajorStrategic or Co-development Partner · 7 April 2026Subsea Integration Alliance (SLB OneSubsea and Subsea7) signed strategic collaboration agreement with PETRONAS Suriname E&P for field development projects in Suriname's frontier basin. Establishes long-term framework for integrated subsea solutions.
• BPmajorStrategic or Co-development Partner · 1 September 2023Partnership formed in September 2023 between BP and Subsea Integration Alliance (OneSubsea and Subsea7) to enhance subsea project delivery across the entire project lifecycle.
• Shell (Ormen Lange)majorStrategic or Co-development Partner · 1 January 2019Frame agreement awarded by A/S Norske Shell for Ormen Lange subsea multiphase compression system EPCI. OneSubsea co-designed world's first subsea wet-gas compression system with Shell.
• NVIDIAtechnologyTechnology or IntegrationSLB partnership with NVIDIA for AI infrastructure in energy sector, including data center cooling solutions and AI applications development for subsea operations.

Scale indicators12 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Baker Hughes: Baker Hughes is a broad oilfield services incumbent with a subsea production systems portfolio (subsea trees, wellheads, manifolds, controls) that competes head-to-head with OneSubsea across most IOC RFQs, particularly in Brazil, West Africa, and the North Sea.
• TechnipFMC: TechnipFMC is the most direct competitor to OneSubsea, offering integrated subsea production systems including subsea trees, manifolds, controls, and EPC(I) services. Its "subsea 2.0" standardized product line directly parallels OneSubsea's Agile SPS approach, and it serves the same IOC/NOC deepwater customer base globally.
• Aker Solutions: Aker Solutions holds 20% of OneSubsea but operates competing subsea umbilicals, subsea controls, and offshore engineering services business lines, creating a partial overlap where it can both contribute to and compete with OneSubsea, particularly on Norwegian Continental Shelf and SURF-adjacent scopes.
• Oceaneering International: Oceaneering is a direct peer in subsea intervention, ROV tooling, and life-of-field services, with comparable installed-base service offerings. It competes for intervention and workover scopes adjacent to OneSubsea's SWIFT and life-of-field portfolio.
• Subsea7: Subsea7 holds 10% of OneSubsea and is the SURF (subsea umbilicals, risers, flowlines) and marine installation partner in the Subsea Integration Alliance. It is a peer in marine construction and SURF scopes but cooperates with OneSubsea on integrated EPCI delivery for the same deepwater projects.

Broad incumbents

• Saipem: Saipem is a broad offshore engineering, procurement, construction, and installation incumbent that delivers integrated subsea field development projects and competes with OneSubsea/Subsea Integration Alliance on large EPCI tenders, particularly in West Africa, Mediterranean, and Middle East deepwater.
• Halliburton: Halliburton is a broad oilfield services incumbent that, through its Landmark and subsea intervention offerings, overlaps with OneSubsea on integrated field development planning, drilling-to-subsea interfaces, and certain subsea completion scopes.
• McDermott International: McDermott is a broad offshore EPCI incumbent that delivers subsea tieback and SURF scopes for deepwater developments, competing with the Subsea Integration Alliance on integrated project execution, particularly in the Gulf of Mexico and Asia Pacific.

Emerging players

• ABB: ABB is an emerging player in subsea electrification, subsea power distribution, and subsea compression drive systems, intersecting with OneSubsea's subsea power solutions and electrification roadmap as offshore operators move toward all-electric subsea trees and powered-from-shore architectures.
• Siemens Energy: Siemens Energy competes in subsea compression electrification and grid-connected subsea power infrastructure, and is partnering across the offshore wind and CCS value chains where OneSubsea's subsea substation and power hub products are positioned.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat8 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/OneSubsea
• Facebookfacebook.com/onesubsea
• LinkedInlinkedin.com/company/onesubsea

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about OneSubsea