Oil and gas
Legacy parts, site measurements and old drawings turned into engineering information for maintenance, modification and decommissioning.

Working with existing assets
Components may have been in service for decades. Original suppliers may no longer exist, and CAD data can be incomplete, out of date or missing altogether. We turn limited information into usable engineering data for maintenance, modification, replacement, manufacture and regulatory work.
Reverse engineering for legacy equipment
When replacement parts are unavailable or design data has been lost, reverse engineering is often the only practical route. From physical parts, site measurements, scan data, photographs or legacy drawings we create CAD models and manufacturing documentation for procurement, fabrication and asset records.
Part of your team
We work with operators, engineering contractors, maintenance teams and equipment suppliers, at whatever level the project needs, from a single legacy part to extra CAD resource on a critical project.
Typical work
- Inspection tooling and specialist fixtures
- Fabricated structures and mechanical assemblies
- Replacement parts
- Offshore platforms and subsea equipment
- Process facilities
- Maintenance and shutdown projects
- Decommissioning
Services we use most in oil and gas
- Reverse engineeringEditable CAD from physical parts, including worn, legacy and discontinued components.
- 3D CAD modellingParametric parts and assemblies, built to be analysed, drawn and machined.
- Manufacturing drawingsDrawing packs your suppliers can quote and make from.
- Engineering resourceF-CAD® engineers working as part of your team.
Related case studies
- Oil and gas
Offshore wellhead decommissioning
More than 15 critical interface and legacy-data uncertainties resolved before the removal tooling was made
Reverse engineering, 3D CAD, tooling design - Energy
Prototype green hydrogen production system
A fabrication-ready prototype developed from an early concept, with optimised pipe routing
SixGate™, stages 02 to 04
3D CAD, pipework design, fabrication drawings
Design to manufacture by F-CAD®
A whole product to develop?
SixGate™ takes it from specification to production in six stages.
Tell us about the job
An engineer reads every enquiry and replies by e-mail.
- Freephone
- 0800 246 1012
- enquiries@f-cad.co.uk
- Office
- 220 St Vincent Street
Glasgow G2 5SG
Your designs are treated in confidence, with an NDA in place before any files are shared, and the design and CAD we produce are yours once the work is paid for. Confidentiality and ownership