Why Outsourcing Industrial Oil and Gas Design Services Makes Sense

Engineering design is one of the most important stages of an industrial oil and gas project. Before equipment is purchased, pipes are fabricated, structures are built, or systems are commissioned, engineers must turn project requirements into practical and reliable designs.

That work can become extremely demanding on large projects.

A refinery expansion, gas processing facility, LNG project, petrochemical plant, offshore platform, pipeline terminal, or storage facility may require hundreds or thousands of engineering documents. These can include P&IDs, piping layouts, equipment specifications, 3D models, isometric drawings, stress calculations, structural drawings, electrical layouts, instrumentation documents, and material specifications.

For many companies, maintaining a large permanent engineering department for every project simply doesn’t make financial sense.

That’s where outsourcing comes in.

By working with specialised engineering providers, project owners and contractors can access experienced engineers, designers, CAD specialists, and technical professionals without building an entire internal team from scratch.

Access to Specialised Engineering Expertise

The biggest advantage is often expertise.

A specialised engineering company may already have professionals experienced in refinery piping, pressure vessels, rotating equipment, offshore structures, pipeline systems, mechanical packages, or process plant design.

Instead of spending months recruiting and training personnel, a project team can bring in specialists when they’re needed.

This approach is particularly valuable when a project requires knowledge that isn’t used continuously by the company’s internal engineering department.

For example, a company may have strong mechanical engineers but limited experience with complex piping flexibility analysis. Outsourcing that specific package allows the company to obtain specialist support without permanently hiring several piping stress engineers.

Lower Engineering Overhead

Engineering labour can represent a significant portion of project costs.

Outsourcing allows companies to convert some fixed engineering expenses into project-based costs. The organisation doesn’t necessarily need to maintain a large workforce during periods when project activity is low.

However, cost shouldn’t be the only consideration.

The cheapest engineering provider isn’t automatically the best choice. A poorly prepared drawing or incorrect engineering calculation can create expensive downstream problems.

A better goal is value engineering: obtaining the right technical capability at a reasonable total project cost.

Faster Project Delivery

Large industrial projects operate under strict schedules.

Engineering delays can affect procurement, fabrication, construction, commissioning, and startup. When internal teams become overloaded, outsourcing can provide additional capacity.

A qualified external team can work alongside the owner’s engineers or EPC contractor to complete specific engineering packages.

In other words, outsourcing can act as an extension of the project team rather than simply replacing it.

7 Places to Outsource Industrial Oil and Gas Design Services

There isn’t one perfect outsourcing destination for every project.

The right choice depends on project size, engineering complexity, budget, required certifications, schedule, location, and the level of responsibility you want the external company to assume.

Here are seven practical options.

1. Specialised Oil and Gas Engineering Firms

Specialised oil and gas engineering firms are often the first option for technically demanding projects.

These companies focus specifically on energy-sector engineering and may provide services covering:

• Process engineering
• Piping design
• Mechanical engineering
• Pipeline engineering
• Equipment engineering
• Structural engineering
• Electrical engineering
• Instrumentation
• 3D plant modeling
• Engineering documentation

Their industry focus can be particularly useful when the project involves complex operating conditions, hazardous fluids, high pressures, elevated temperatures, or demanding safety requirements.

Specialised firms may also understand common owner specifications and engineering practices used throughout the sector.

2. EPC Engineering Companies

Engineering, procurement, and construction companies are another major outsourcing option.

An EPC contractor can take responsibility for a much broader scope than a design-only company.

Depending on the contract, the EPC organisation may handle:

• Front-end engineering.
• Detailed engineering.
• Procurement.
• Vendor coordination.
• Construction support.
• Commissioning support.

This model is attractive for large projects where the owner wants a single organisation to coordinate multiple disciplines.

The trade-off is that EPC contracts can be more complex and expensive than outsourcing a small engineering package.

3. Multidisciplinary Engineering Consultancies

Multidisciplinary consultancies provide engineering services across several technical disciplines.

They can be useful when the project requires coordination between mechanical, civil, structural, electrical, instrumentation, and process engineering.

For example, a new gas processing facility may require:

• Process simulations
• Equipment sizing
• Piping design
• Structural steel design
• Building design
• Electrical distribution
• Instrumentation
• Fire protection
• Utility systems

Using one multidisciplinary partner can reduce coordination problems between separate suppliers.

4. Offshore Engineering Design Firms

Offshore projects have unique design requirements.

Floating production facilities, offshore platforms, subsea systems, and marine terminals require engineers who understand environmental loading, marine conditions, corrosion, structural dynamics, space limitations, and offshore safety requirements.

For these projects, an ordinary industrial design provider may not be sufficient.

An offshore engineering specialist can provide services such as:

• Offshore structural design
• Piping layouts
• Equipment arrangement
• Marine systems engineering
• Structural analysis
• Mechanical package engineering
• Topsides design
• Brownfield modification design

Experience matters greatly here because offshore engineering errors can be exceptionally expensive to correct.

5. CAD and Plant Design Service Providers

Not every outsourced project requires complete engineering responsibility.

Sometimes the engineering team already knows what needs to be built but doesn’t have enough drafting or modelling capacity.

CAD and plant design providers can then handle tasks such as:

• 2D drafting
• 3D modeling
• Piping isometrics
• Equipment layouts
• Structural drawings
• As-built documentation
• CAD conversion
• Point-cloud modeling
• Drawing revisions

This can be a cost-effective option for companies that retain engineering responsibility internally.

6. Global Engineering Outsourcing Teams

Global engineering teams have become increasingly common.

These providers may operate from engineering centres in countries such as India, Indonesia, the Philippines, Eastern Europe, or other regions with large technical workforces.

The primary attraction is scalability.

A company can potentially increase engineering capacity without establishing a new office.

However, successful global outsourcing requires strong communication, document control, cybersecurity, technical standards, and project management.

Time-zone differences aren’t necessarily a problem. With good workflows, they can even create a near-continuous engineering cycle.

7. Independent Engineering Specialists

Independent engineers and small engineering teams can be excellent choices for focused technical assignments.

Examples include:

• Piping stress analysis
• Mechanical equipment calculations
• Pressure vessel review
• Design verification
• Reverse engineering
• Failure analysis
• Technical documentation
• Engineering audits

This model works especially well when a company needs highly specialised expertise for a limited period.

The key is verifying credentials, project history, technical competence, and professional liability arrangements before assigning safety-critical work.

What Industrial Oil and Gas Design Services Can Be Outsourced?

The term “design services” covers a much wider scope than CAD drafting.

Depending on the provider, a company can outsource almost an entire engineering package or only a small part of it.

Process and Piping Design

Process and piping engineering are among the most commonly outsourced services.

Typical deliverables include:

• Process flow diagrams
• Piping and instrumentation diagrams
• Piping layouts
• Piping specifications
• Isometric drawings
• Pipe support drawings
• Valve schedules
• Line lists
• Material take-offs
• Piping stress analysis
• Hydraulic calculations

For process piping, applicable codes and standards must be identified at the beginning of the project.

For example, ASME B31.3 covers process piping used in facilities including petroleum refineries and related processing plants. The standard addresses areas such as materials, design, fabrication, examination, inspection, and testing.

Mechanical Equipment Design

Mechanical design may cover both static and rotating equipment.

Common equipment includes:

• Pressure vessels
• Heat exchangers
• Pumps
• Compressors
• Storage tanks
• Separators
• Filters
• Skids
• Package equipment

Engineers may be responsible for equipment specifications, calculations, datasheets, vendor document review, layout, and integration with other systems.

Structural and Civil Design

Industrial facilities need substantial structural infrastructure.

Outsourced services can include:

• Steel structures
• Equipment foundations
• Pipe racks
• Platforms
• Access structures
• Concrete foundations
• Structural analysis
• Building layouts
• Site development

The structural design must account for equipment loads, wind, seismic conditions where applicable, vibration, thermal effects, and operational requirements.

Electrical and Instrumentation Design

Modern oil and gas facilities depend heavily on electrical and control systems.

Outsourced services may include:

• Electrical load lists
• Single-line diagrams
• Cable schedules
• Lighting layouts
• Instrument indexes
• Instrument datasheets
• Control system documentation
• Instrumentation layouts
• Cable tray design
• Grounding design

These systems must be coordinated closely with process and mechanical design.

How to Choose an Industrial Oil and Gas Design Partner

Choosing a design provider shouldn’t be based on price alone.

A strong selection process evaluates technical capability, communication, quality systems, project experience, software, security, and commercial terms.

Technical Qualifications and Experience

Start by asking for evidence.

Look for previous projects similar to yours in:

• Facility type
• Project size
• Process complexity
• Geographic location
• Applicable codes
• Engineering discipline
• Project phase

A company with extensive experience in building design isn’t necessarily qualified to design a high-pressure gas processing system.

Relevant experience is what counts.

Software and Digital Engineering Capability

Modern projects rely heavily on digital engineering.

Depending on the scope, providers may need experience with:

• AutoCAD
• Plant 3D
• Revit
• Navisworks
• AVEVA E3D
• Hexagon Smart 3D
• SolidWorks
• Inventor
• CAESAR II
• STAAD.Pro
• ANSYS
• ETAP

Don’t simply ask which software they own.

Ask whether their engineers have used the software on projects similar to yours.

Codes, Standards, and Compliance

Codes and standards should be defined before design begins.

Potential requirements can include ASME, API, NFPA, IEC, ISO, NACE, ASTM, and local regulations.

The exact requirements depend on the facility, jurisdiction, process, equipment, and contractual specifications.

ASME’s B31.3 requirements, for example, cover process piping design, analysis, materials, fabrication, testing, and inspection.

A qualified engineering partner should be able to explain which standards apply and how compliance will be demonstrated.

Quality Assurance and Document Control

Engineering quality isn’t just about calculations.

Document control is equally important.

Ask potential suppliers about:

• Drawing revision procedures
• Design checking
• Independent verification
• Calculation reviews
• File naming
• Transmittals
• Change management
• Document registers
• QA/QC procedures
• Engineering approval workflows

A technically correct drawing can still cause trouble if the wrong revision reaches the fabrication team.

Typical Outsourcing Models

Companies can outsource engineering in several ways.

Project-Based Outsourcing

Under a project-based model, the supplier receives a defined scope and produces agreed deliverables.

This model is ideal when:

• Scope is clearly defined.
• Deliverables are measurable.
• Schedule is known.
• Engineering requirements are stable.

A fixed-price arrangement may provide predictable costs, although changes must be managed carefully.

Dedicated Engineering Teams

A dedicated team works almost like an extension of the internal engineering department.

For example, a company could establish a remote team consisting of:

• Two mechanical engineers
• Three piping designers
• One structural engineer
• One project coordinator

The team can then support several projects over a longer period.

This model is useful for organisations with recurring engineering requirements.

Staff Augmentation

Staff augmentation provides individual engineers or designers who work under the client’s project management structure.

It’s useful when the client has strong project management but lacks sufficient personnel.

The company maintains more direct control while gaining additional capacity.

How Much Do Industrial Oil and Gas Design Services Cost?

There is no universal price for industrial oil and gas design services.

Pricing depends on several variables:

Cost Factor      Typical Impact
Project size:    Larger projects require more resources
Engineering complexity:  Complex systems require specialists
Number of disciplines:  More disciplines increase coordination
Required standards:  Additional compliance can increase effort
Project schedule:  Accelerated delivery can increase cost
Design maturity:  Early-stage designs may require more revisions
Location:  Labour rates vary by region
Software requirements:  Specialised tools can affect costs
Documentation requirements:  More deliverables increase engineering hours
Site support:  Travel and field engineering add costs

For this reason, a good outsourcing provider should quote against a defined scope rather than simply offering a generic hourly rate.

A proper request for quotation should include drawings, specifications, equipment lists, design criteria, applicable codes, expected deliverables, schedule requirements, and revision expectations.

The more complete the scope, the more meaningful the quotation will be.

Risks of Outsourcing Engineering Design

Outsourcing provides significant benefits, but it also introduces risks.

Common problems include:

• Poor communication
• Weak technical supervision
• Inadequate quality control
• Unclear scope
• Incorrect design assumptions
• Data-security issues
• Revision-control errors
• Schedule delays
• Lack of industry experience
• Hidden costs

The good news is that most of these risks can be reduced through proper project controls.

One practical strategy is to start with a smaller engineering package.

Instead of immediately outsourcing an entire project, assign a clearly defined package such as piping modelling, equipment drawings, or documentation.

Evaluate the provider’s performance.

If the results are good, expand the relationship.

How to Manage an Outsourced Design Project

Successful outsourcing requires active management.

Start by establishing a clear engineering basis.

The project should define:

• Design conditions.
• Applicable codes.
• Client specifications.
• Design deliverables.
• Drawing standards.
• File formats.
• Revision procedures.
• Approval workflows.
• Communication channels.
• Project milestones.

Weekly technical meetings can help identify issues before they become expensive.

A shared document register is also extremely valuable.

Every drawing, calculation, specification, and model should have a clear status.

For example:

Status         Meaning
WIP            Work in progress
IFA             Issued for approval
IFC             Issued for construction
AFD            Approved for design
As-Built     Final field condition

The exact terminology can vary by project, but the principle remains the same: everyone should know which document is current.

Emerging Technologies in Industrial Oil and Gas Design

Technology is changing how engineering companies deliver projects.

Traditional 2D drawings remain important, but modern engineering increasingly relies on connected digital models and automated workflows.

3D Modelling and Digital Twins

3D plant modelling allows engineering teams to identify physical conflicts before construction.

For example, designers can identify clashes between:

• Pipes
• Structural steel
• Equipment
• Cable trays
• HVAC systems
• Access platforms

Digital twins take this concept further by connecting engineering information with operational data.

This can improve asset management after construction.

AI and Engineering Automation

Artificial intelligence is beginning to support engineering workflows.

Potential applications include:

• Automated drawing checks
• Design rule verification
• Document classification
• Engineering data extraction
• Clash detection
• Predictive maintenance
• Design optimization
• Automated reporting

AI shouldn’t replace professional engineering judgment.

Instead, it can reduce repetitive work and help engineers spend more time on technical decisions.

Cloud-Based Collaboration

Cloud-based engineering environments make remote collaboration easier.

An owner in one country, an EPC contractor in another, and a design team somewhere else can potentially work on the same project ecosystem.

This makes global outsourcing more practical than it was in the past.

However, cybersecurity and access control become increasingly important when sensitive engineering information is shared across organisations.

Frequently Asked Questions

1. What are industrial oil and gas design services?

Industrial oil and gas design services involve engineering and technical work required to design facilities, equipment, piping, structures, utilities, electrical systems, instrumentation, and related infrastructure used in the energy industry.

2. Where is the best place to outsource oil and gas engineering?

The best provider depends on the project. Specialised engineering firms are suitable for technical work, EPC companies are useful for large integrated projects, CAD providers are suitable for drafting and modeling, while independent specialists can handle highly focused engineering tasks.

3. Can small oil and gas companies outsource engineering design?

Yes. Outsourcing can be particularly useful for smaller companies because they may not need a large permanent engineering department.

They can hire specialists only when specific projects require additional capacity.

4. Is outsourcing engineering cheaper?

It can be, but cost savings aren’t guaranteed.

The total value depends on labour rates, project management, engineering quality, revisions, schedule performance, and the cost of correcting errors.

A lower hourly rate can become expensive if the design requires extensive rework.

5. What software should an oil and gas design company know?

The software depends on the engineering scope. Common platforms can include AutoCAD, Plant 3D, AVEVA E3D, Smart 3D, Navisworks, CAESAR II, STAAD.Pro, ANSYS, SolidWorks, Inventor, and ETAP.

The important question isn’t simply whether a provider uses these tools. Their team should have demonstrated experience applying them to comparable projects.

6. What standards are commonly used in oil and gas design?

Depending on the project, engineers may work with standards from organisations such as ASME, API, NFPA, IEC, ISO, ASTM, and NACE, as well as applicable national and local regulations.

For process piping, ASME B31.3 is a major reference. ASME states that B31.3 addresses piping found in petroleum refineries and other processing facilities and includes requirements covering design, materials, fabrication, examination, inspection, and testing.

7. Should engineering outsourcing be project-based or long-term?

Both models can work.

Project-based outsourcing is usually better for clearly defined packages. Dedicated teams are often more effective when a company has recurring engineering requirements.

8. How can I evaluate an engineering outsourcing company?

Review its previous projects, technical personnel, engineering software, quality system, applicable certifications, project references, communication process, cybersecurity controls, and sample deliverables.

Most importantly, verify that its experience matches your specific project type.

9. Can outsourced engineers work with an internal engineering team?

Absolutely.

In fact, a hybrid model is often highly effective. The internal team can retain engineering authority and project knowledge while the external team provides additional technical capacity.

10. What should be included in an outsourcing request for quotation?

A good RFQ should define the project scope, engineering basis, drawings, specifications, codes, deliverables, schedule, software requirements, document formats, revision process, quality requirements, and commercial expectations.

The clearer the RFQ, the easier it is to compare competing providers.

Conclusion

Outsourcing Industrial Oil and Gas design services can give project owners, EPC contractors, manufacturers, and energy companies access to specialised engineering skills without maintaining a massive permanent design organisation.

The seven major options include specialised oil and gas engineering firms, EPC companies, multidisciplinary consultancies, offshore engineering specialists, CAD and plant design providers, global engineering teams, and independent technical specialists.

However, choosing a provider shouldn’t come down to price alone.

Technical experience, engineering quality, applicable standards, software capability, communication, document control, cybersecurity, and project management all matter.

For smaller assignments, a specialist or CAD provider may be enough. For complex refinery, LNG, petrochemical, offshore, or gas-processing projects, a multidisciplinary engineering organisation or EPC contractor may provide better coordination.

The smartest approach is to match the outsourcing model to the project’s actual needs.

Start with a clearly defined scope, establish measurable deliverables, verify the provider’s technical experience, and maintain strong engineering controls throughout the project.

When those fundamentals are in place, outsourcing isn’t simply a way to reduce workload. It can become a strategic engineering advantage—helping companies scale faster, access specialised expertise, control costs, and deliver complex industrial projects with greater confidence.