Subsea design · Advanced analysis · Integrity
Committed to engineering excellence.
Z-Subsea Energies is an independent consultancy delivering subsea systems design, advanced analysis and integrity management across the full life of oil and gas assets, worldwide.
Asset integrity & life extension
Keeping ageing assets safely in service.
Fitness-for-service, ECA and life-extension studies that maximise safe operating time and minimise shutdowns and downtime.
Training & software
Sharing what we know with the industry.
Technical training in subsea pipeline engineering and integrity, and Spectrum Pipelines, our pipeline design and integrity software suite.
Subsea engineering
Pipelines, risers, structures and components, from concept and FEED to detailed design.
Integrity management
Risk-based integrity, fitness for service, ECA and life extension.
Advanced analysis
Nonlinear FEA of buckling, free spans, stability, impact and components.
Training & software
Technical courses worldwide and the Spectrum Pipelines software suite.
Our mission
To provide world-class, multi-disciplinary and impartial subsea design and integrity consultancy that creates value for our clients through better new designs and the safe life extension of existing assets.
About Z-Subsea Energies
Independent engineering, from concept to life extension.
Established in London in 2011, Z-Subsea Energies provides integrated, impartial engineering to the oil and gas industry: from concept and FEED through detailed design, construction and operation to decommissioning, and safe operation beyond the original design life.
- Asset integrity management Risk-based IM to DNV-RP-F116 and ASME B31.8S
- Fitness for service & ECA API 579-1/ASME FFS-1 · DNV-RP-F101 · BS 7910
- Subsea pipelines & risers DNV-ST-F101 · PD 8010 · ASME · API RP 1111
- Advanced FE analysis ABAQUS nonlinear FEA · DNV-RP-F105 · DNV-RP-F109
Engineering services
Full life-cycle subsea engineering.
Five specialist areas covering subsea projects from concept to end of life and beyond.
Asset Integrity Management
Risk-based integrity management of new and existing assets from design to decommissioning, including fitness for service, ECA and life extension.
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Subsea Engineering
Subsea systems design from pre-FEED and FEED to detailed design: field layout, pipelines, risers, structures and components.
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Advanced Analysis
Nonlinear finite element analysis of pipelines, risers, components and structures, for safer and more economical designs.
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Flow Assurance and Process Engineering
Flow assurance and process design for subsea and onshore pipelines: multiphase, single-phase oil, LPG, gas and special products.
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Materials Selection and Corrosion Control
Full life-cycle materials selection, corrosion and erosion assessment, cathodic protection and failure investigation.
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Years of independent consultancy
3
Directors holding PhDs
11
Technical training courses
13
Spectrum Pipelines modules
Quality & standards
Certified, registered and code-driven.
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ISO 9001
Quality management · QMS International
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ISO 14001
Environmental management · QMS International
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FPAL registered
Supplier registration · Achilles
- Subsea UK Member
- Oil & Gas UK Member
Design codes we work to
- DNV-ST-F101
- DNV-RP-F101
- DNV-RP-F105
- DNV-RP-F109
- DNV-RP-F110
- DNV-RP-F112
- DNV-RP-F116
- BS 7910
- API 579-1/ASME FFS-1
- ASME B31.4/B31.8
- PD 8010
- NORSOK N-001
Engineering software
- ABAQUS
- ANSYS
- OrcaFlex
- Flexcom
- OLGA
- PIPESIM
- PVTsim
- CrackWise
- Spectrum Pipelines
How we engage
From enquiry to engineering.
Quick turnaround and high-quality delivery, with senior engineers involved from the first conversation.
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01 Tell us about the challenge
Share the asset, the scope and your timeline through the quote form, by email or with a call.
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02 Receive a clear proposal
We reply with the scope, approach, codes, schedule and price.
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03 Engineering, delivered
Our team delivers to the budget and to the standards your project requires, with clear reporting.
Free download
Asset Integrity and Materials Portfolio
Our integrity management, fitness-for-service, ECA, life extension and materials and corrosion services, with our track record. 27 pages.
Selected projects
Proof, not promises.
Recent work for operators, contractors and verification bodies worldwide.
Integrity management
Integrity Management System Audit
Oman Gas Company (OGC)
Subsea design
Ultra-Deep-Water Tee and Wye Piece Design
Petrobras
Advanced analysis
48-Inch Paradip Offshore Pipeline Dent Assessment
Indian Oil Corporation Limited (IOCL)
Integrity management
Fitness for Service of Seven Offshore Pipelines
PetroVietnam Gas (PV Gas)
Advanced analysis
Level 2 and 3 Free Span Assessment
EnQuest Malaysia (through Ankaa Consulting)
Integrity management
J-Tube Inspection and Integrity Management
TAQA
Our team
Led by PhD-qualified engineers.
Directors and associates with experience at leading design consultancies, verification bodies and operators.
Trusted by
Clients and partners.
News
Latest from Z-Subsea Energies.
Project awards, training courses and company news.
Company news
· 1 min read
Introducing Spectrum Pipelines
With SK Engineering, we have developed Spectrum Pipelines: a suite of 13 linked modules for pipeline design and integrity.
Read article
Projects
· 1 min read
Three Contracts for EnQuest Malaysia
Ankaa Consulting has contracted Z-Subsea Energies for a risk and integrity review, free span assessment and riser stress analysis for EnQuest Malaysia.
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Projects
· 1 min read
Advanced Dent Assessment for IOCL
Indian Oil Corporation has awarded our subsea design team a contract for advanced dent assessment of its 48-inch Paradip offshore pipeline.
Read article
Planning a subsea project?
Tell us about the scope and timeline. A senior engineer will come back to you, usually within one working day.