What Envirex does

Envirex is a Norwegian subsea engineering company headquartered in Bryne, Norway, founded in 2011 by Thomas Aunvik and Kenneth Thunheim. The company designs and manufactures subsea hydraulic systems, control solutions, and custom ROV tooling for oil and gas operators, primarily serving the Norwegian Continental Shelf. Its offering combines a standardized product catalog with bespoke system integration: modular building blocks such as subsea hydraulic power units, valve packs, pressure sensors, and compensators are configured into complete ROV-mounted systems and field-proven custom solutions including SWIFT (umbilical-less tubing hanger control), RLCT (riserless coiled tubing), MODFOX (modular subsea control, co-developed with FOX Subsea), and SubComm (subsea commissioning, co-developed with OceanOne). Envirex manages the full delivery lifecycle from concept through in-house production and hyperbaric testing, holding ISO 9001 and ISO 14001 certifications.

The company operates a direct enterprise sales model with senior sales engineers and a key account manager engaging operators and service companies on project-based custom quotes. Revenue streams include one-time custom subsea solution contracts, standardized hardware sales, and multidisciplinary engineering services. Named customers include TechnipFMC, FOX Subsea, OceanOne, and E&P companies operating on the Norwegian Continental Shelf, with partnerships extending to Ixys for HMI software and Envirent for manipulator control integration. Annual turnover is approximately NOK 200 million, with a team of 30+ colleagues across eight group entities under the Envirex Group umbrella.

In March 2026, Envirex Group AS announced the sale of its subsea business to OneSubsea—a joint venture of SLB, Aker Solutions, and Subsea7—and the transaction completed on May 11, 2026. Envirex Group continues to operate as part of OneSubsea, retaining its agile engineering culture while gaining access to a global oilfield services distribution network. The acquisition represents a strategic exit and scale-up pathway, transforming the business from a regionally focused Norwegian subsea specialist into a unit within a top-tier global subsea supplier.

Name

Envirex

Legal name

Envirex Group AS

Website

https://envirex.no

Company type

Private

Founded year

2011

Operating status

Acquired

Headcount range

11–50 employees

Short description

Envirex is a Norwegian subsea engineering company that designs and manufactures modular hydraulic systems, intelligent control solutions, and custom ROV tooling for oil and gas operators on the Norwegian Continental Shelf. Founded in 2011, it became part of OneSubsea following the May 2026 acquisition of its subsea business by SLB's joint venture.

Ownership category

akta.pro rank

Product category

Subsea Engineering Equipment

NAICS

Oil and Gas Field Machinery and Equipment Manufacturing (333132)

SIC

Oil & Gas Field Machinery & Equipment (3533)

akta.pro primary industry

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

Keywords

• Subsea engineering
• Subsea hydraulics
• ROV tooling
• Subsea control systems
• Oil and gas equipment

Headquarters

HQ city

Bryne

HQ country

Norway

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Subsea Solutions: Envirex designs and builds innovative, sustainable systems tailored to each client and project, combining modular building blocks to create complete systems. This includes ROV skids, control panels, and specialized subsea equipment.
2. Standardized Products: Sale of field-proven standardized products including subsea pumps, valve packs, reservoirs, compensators, sensors, and ROV-operated valves. Products include Subsea Hydraulic Power Units, Dirty Work Packs, and Pressure Sensors.
3. Engineering and Project Services: Multidisciplinary engineering services including design, project management, software development, and technical personnel for subsea projects from initial concept through final delivery.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Envirex designs and manufactures subsea hydraulic products, ROV tooling, subsea control systems, and integrated subsea systems for the oil and gas industry. Its offering spans individual hardware components (subsea pumps, valve packs, pressure sensors, compensators, ROV-operated valves) up to complete custom-engineered systems (SWIFT, RLCT, MODFOX, SubComm, ROV skids) configured from modular building blocks, delivered end-to-end from concept and design through in-house production and hyperbaric testing.

Product overview

Envirex is a subsea engineering company that designs and manufactures a broad portfolio of subsea systems, products, and tailor-made solutions for the oil and gas industry. Its offering is organized around modular building blocks and integrated systems — ranging from individual components (subsea pumps, valve packs, sensors, compensators) to complete ROV-mounted systems (ROV Skids, Back Pack Systems, ROV Control Panels, PCS positioning control kits) — which are configured and combined into custom solutions such as SWIFT (wireless tubing hanger installer), RLCT (riserless coiled tubing), MODFOX (modular subsea control), and SubComm (subsea commissioning). The company manages end-to-end delivery from idea and design through in-house production and testing, serving customers globally with products rated for depths up to 5000 meters.

Differentiator

Problem solved

Functional benefit

Products and services

• SWIFT - Submersible Wireless Installer for Tubing A remotely operated in-riser tubing hanger control tool integrated within the drill pipe landing string that eliminates the need for umbilicals and surface control systems, reducing topside complexity, footprint, and operational risk for subsea well operators.
• RLCT - Riserless Coiled Tubing Riserless Coiled Tubing technology that enables coiled tubing operations in subsea wells without traditional rig, riser, or tensioned frame infrastructure, operated from a Riserless Light Well Intervention vessel, with an Envirex-designed control system that fully automates the mechanical injector.
• MODFOX Modular Subsea Control System A flexible modular subsea control system co-developed with FOX Subsea for intervention and installation operations, offering reconfigurable system setups to reduce turnaround times and support future remote operations.
• SubComm Modular Subsea Commissioning System A modular subsea commissioning system co-developed with OceanOne to handle flooding, testing, and chemical injection subsea, replacing multiple topside tools and enabling smaller vessels with reduced operational costs and CO2 emissions.
• Atlas Positioning Control System Gen 3 A precision upgrade kit that transforms the Atlas 7F manipulator arm into a high-precision subsea tool, combining servo hydraulics, magnetic sensors, and a master controller for full position control.
• PCS - Positioning Control System Kit A modular upgrade kit that transforms standard subsea manipulator arms into high-precision tools using servo hydraulics, magnetic sensors, and a dedicated master controller, providing smooth, accurate, and responsive control with real-time position feedback.
• ROV Skids A family of tailored ROV-mounted skids built on proven modular building blocks, integrating hydraulic power, control systems, sensors, and valve packs for operations including intervention, hydrate remediation, and BOP emergency shutdown; includes RWOCS Intervention System, ROV Multipurpose Skid, HRS Hydrate Remediation Skid, and BOP Shutdown Skid.
• Back Pack Systems Modular subsea reservoir systems designed to extend ROV runtime and capability, providing additional clean or dirty fluid capacity in a compact, reliable, and easily integrated package; includes Back Pack 2x200L and Dirty WorkPack Back Pack configurations.
• ROV Control Panels Tailored ROV interface panels integrating ROV-operated valves, hotstabs, receptacles, gauges, and regulators, built to API and ISO standards, tested and documented for deployment.
• Subsea Hydraulic Power Unit (SHPU) An electrically controlled subsea pump capable of delivering 1035 Bar (HP) and 345 Bar (LP) with software-configurable pressure and flow adjustments, integrated temperature and pressure transmitters.
• H-SHPU Hydraulically Driven Subsea Power Unit A hydraulically driven subsea power unit capable of delivering pressures up to 1035 Bar, designed for seamless integration into subsea systems with user-friendly pressure and flow adjustments via computer-based software.
• High Flow Dirty Work Pack An isolated hydraulic power unit with two completely separate oil circuits used to reduce contamination risk in the main ROV hydraulic system, capable of delivering up to 120 L/min at 345 bar.
• Smart Dirty Work Pack An isolated hydraulic power unit with integrated electrical remote operated pressure regulation, providing two separate oil circuits to prevent contamination in ROV hydraulic systems, rated up to 345 bar.
• Dirty Work Valve Pack A compact all-in-one unit for subsea tooling and pressure leak/test applications, containing 4x NG4 and 1x NG6 proportional valves integrated with a motor-pump, rated to 3000m water depth.
• 8-Station Valve Pack A compact, pressure-compensated subsea housing containing 8x NG6 directional valves with configurable proportional, solenoid, or mixed valve configurations driven by a digital control system with RS232, RS485, or Ethernet communication.
• 4-Station Small Valve Pack A compact subsea valve pack with four proportional directional valves, individual pressure and flow adjustment per outlet, pressure sensor feedback, and communication via RS232, RS485, or Ethernet.
• 4-Station High Flow Valve Pack A cost-effective subsea valve pack with high flow capabilities up to 120 L/min, featuring 4 directional control valves with individual pressure and flow control.
• Subsea WOCS 8-function Valve Pack A self-contained pressure-compensated subsea valve pack with 8 pulse-operated DCVs for controlling hydraulic functions on subsea tools, suitable for 3000m water depth.
• ROV Operated Valve - 0-1379Bar / 20K - SS Actuator A field-proven subsea ROV-operated directional control valve rated up to 20,000 PSI (1379 Bar) and 3000m water depth, with stainless steel construction and 2, 3, and 4-way configurations.
• ROV Operated Valve - ALU Actuator A field-proven subsea ROV-operated rotary directional control valve rated up to 20,000 PSI (1379 Bar) and 3000m water depth, designed for the most demanding subsea environments.
• Pressure Relief Valve (with range) A compact, highly accurate direct-acting pressure relief valve factory preset to 0.8 Bar or 1.5 Bar crack pressure, with tamper-proof internal adjustments.
• Hydraulic Valve Actuator A compact subsea hydraulic actuator for operating standard ball valves, based on hydraulic principles with a lever arm, rated to 210 bar operational pressure, with modular design adaptable to different valves.
• Pressure Sensor ESPS3000 Series A compact subsea pressure transmitter for use in subsea applications, offering reliable pressure measurement under harsh conditions, with pressure ranges from 0 to 2200 Bar and submersible to 3000m seawater.
• Spring Loaded Compensator 50 litres A hydraulic compensator designed for subsea systems requiring over-pressure at depths down to 5000m, used as a fluid reservoir for subsea systems, produced with EN-AW 6082 T6, GRP, and POMC materials.
• Spring Loaded Compensator 100 litres A large-capacity hydraulic compensator for subsea systems at depths down to 5000m, produced in stainless steel, GRP, and POMC materials with stainless steel springs.
• 30ml Subsea Pressure Compensator A compact, low-weight subsea pressure compensator with a rolling diaphragm design consisting of few components for reliability, suitable for various subsea applications.
• Engineering and Project Services Multidisciplinary engineering services covering design, project management, software development, and technical personnel for subsea projects from initial concept through final delivery, including tailored end-to-end execution.

Quantifiable outcome

• Significant reduction in time, risk, and cost for tubing hanger operations using SWIFT compared to traditional methods
• +2 more outcomes

Named customers4 records

Segments3 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature7 records

Partnerships

Five partnerships are on record, tiered core and minor.

• OneSubsea (SLB)coreStrategic or Co-development Partner · 11 May 2026OneSubsea, a joint venture between SLB, Aker Solutions, and Subsea7, completed acquisition of Envirex Group's subsea business in May 2026. The transaction creates opportunities to support development and deployment of next-generation subsea solutions including umbilical-less and wireless systems. Envirex Group continues to operate as part of OneSubsea, maintaining its agility and innovative mindset while gaining access to OneSubsea's global reach.
• FOX SubseacoreStrategic or Co-development PartnerEnvirex collaborated with FOX Subsea to develop MODFOX, a next-generation modular subsea control system. The partnership combined FOX Subsea's domain expertise with Envirex's system engineering and integration capabilities. FOX Subsea has secured major contracts using MODFOX for the Yggdrasil and Skarv fields.
• OceanOnecoreStrategic or Co-development PartnerEnvirex worked alongside OceanOne to develop SubComm, a modular subsea commissioning system designed to handle flooding, testing and chemical injection operations subsea, replacing traditional topside tools.
• TechnipFMCcoreStrategic or Co-development PartnerCollaboration with TechnipFMC on RLCT (Riserless Coiled Tubing) technology development. TechnipFMC's expertise and hands-on approach during critical phases of RLCT testing and execution contributed to the technology's successful field deployment in the North Sea.
• EnvirentminorStrategic or Co-development PartnerClose collaboration with Envirent from concept to field-ready system on Atlas Positioning Control System Gen 3. Envirex delivered the control package combining reliability, precision and ease of use while maintaining the strength and robustness of the Atlas arm.

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Proserv: Independent provider of subsea controls, instrumentation, and intervention equipment, with a strong subsea hydraulic and controls heritage. Closely comparable to Envirex in target market (subsea controls, hydraulic systems) and customer base (E&P operators and subsea service companies).
• Dril-Quip: Manufacturer of subsea wellhead equipment, subsea trees, and related downhole tools for offshore oil and gas. Directly comparable to Envirex in subsea tree and wellhead-adjacent technologies, including the vertical tree systems targeted by MODFOX.
• TechnipFMC: Global subsea equipment and services major that designs and manufactures subsea trees, controls, and intervention systems. Comparable to Envirex as a subsea engineering and equipment counterpart, and already a named Envirex partner on the RLCT program.

Emerging players

• Helix Energy Solutions: Provider of subsea intervention, well intervention, and robotics services with proprietary ROV tooling and intervention systems. Comparable to Envirex as a subsea intervention specialist competing in similar intervention and decommissioning workflows.
• Forum Energy Technologies: Provider of subsea robotics, ROV tooling, and intervention equipment used by E&P operators and subsea service companies. Comparable to Envirex's ROV skids, valve packs, and intervention tooling product lines.

Broad incumbents

• Saipem: Global engineering and construction contractor with subsea tree, SURF, and intervention capabilities. Comparable to Envirex in addressing subsea oil and gas engineering challenges, though Saipem operates at much larger scale and across the full project lifecycle.
• Kongsberg Maritime: Norwegian-headquartered supplier of marine and subsea technology, including subsea positioning, sensors, and control systems. Comparable to Envirex on the subsea controls and positioning side, including the Atlas PCS product family.
• Aker Solutions: Large Norwegian subsea and offshore engineering contractor with a broad subsea production, umbilical, and control systems portfolio. Comparable as a subsea equipment supplier in the same NCS ecosystem and an indirect stakeholder in Envirex via the OneSubsea joint venture.
• Teledyne Marine: Provider of subsea imaging, sensors, instruments, and acoustic positioning used in ROV and intervention operations. Comparable to Envirex on the subsea instrumentation and measurement side, including pressure sensors and control system components.
• Subsea7: Global subsea construction, installation, and inspection contractor active in SURF and IRM work. Overlaps with Envirex on intervention and subsea operations, and is a partner in the OneSubsea joint venture that has acquired Envirex.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/EnvirexAS
• LinkedInlinkedin.com/company/envirex-a-s

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about Envirex