Pipeline Engineering and Design

Services

Looking for solutions involving subsea pipelines for hydrocarbon or CO2 transportation? Offshore Independents provides engineering and project management services to the oil and gas industry.

 

Our experienced pipeline engineers and designers offer a range of services covering all stages of subsea pipeline projects from start to finish.

OI has maintained a core staff of experienced managers supported by highly qualified specialist engineers, and compliments this by actively recruiting and training graduate engineers. This core expertise is augmented by contract staff with specific skills and knowledge, as required. 

On many occasions OI engineers and managers have been involved in large multi-discipline offshore and onshore transportation system projects, and are thus fully knowledgeable of client requirements and expectations related to such projects.

We can cover the whole pipeline project or parts of it, provide project management, geological, pipeline and structural experts, logistics, field engineers and drafting services.

Pipeline Design

Our pipeline designers translate the technical requirements into design drawings showing general arrangements as well as detailed information required for fabrication and installation of the pipeline systems. 

  • Field Layouts
  • Alignment sheets
  • Plot Plans, GA's and side views
  • Landfalls
  • Crossings
  • Isometrics
  • Detailed drawings
  • Launchers, Receivers
  • Steel Structures

Track record

 
Port of Rotterdam

CO2 Pipeline Feasibility Study and Preliminary Design

  • Pipeline Engineering and Design
  • Netherlands
 
Boskalis

Alexandroupolis LNG Pipeline System FEED Endorsement & Tender Support

  • Pipeline Engineering and Design
  • Greece
 
Petrol Ofisi

Antalya Terminal Pipeline Extension Verification of detailed design

  • Pipeline Engineering and Design
  • Turkey

Installation Engineering

Pipe lay operations require extensive preparations taking into account the properties of the pipeline materials, the selected pipe lay vessel, environmental loads and statutory requirements pertaining to the working area.   

 

During pipe lay, a team of specialist engineers perform engineering calculations on the go to ensure a safe and efficient operation.

Installation Engineering may comprise:

  • Installation Analysis (Static, Dynamic, Fatigue)
  • Installation Methodology & Procedures
  • Lay barge pipe lay equipment layout and specifications
  • Welding, Non Destructive Testing and Field Joint Coating
  • Lifting analyses, RAO’s, Anchor Patterns
  • Quality Control, SIMOPS, HAZOP, HSE
  • Landfalls, crossings, expansion spools, risers, tie-ins
  • Fleet Management
  • Vessel selection
  • Stinger design / verification
  • Logistics, permitting
  • Installation Analysis (Static, Dynamic, Fatigue)
  • Installation Methodology & Procedures
  • Lay barge pipe lay equipment layout and specifications
  • Welding, Non Destructive Testing and Field Joint Coating
  • Lifting analyses, RAO’s, Anchor Patterns
  • Quality Control, SIMOPS, HAZOP, HSE
  • Landfalls, crossings, expansion spools, risers, tie-ins
  • Fleet Management
  • Vessel selection
  • Stinger design / verification
  • Logistics, permitting

Track record

 
Bluestream

Dana F2-A Hanze 4-inch Gas Export Pipeline Installation Engineering Support

  • Pipeline Engineering and Design
  • North Sea
 
Undisclosed client

Pipelay Analysis long

  • Pipeline Engineering and Design
  • Somewhere, The World

Pipeline / SURF Engineering

Based on the major international pipeline codes we perform pipeline analysis with the latest finite element software packages, provide specifications to international standards and deliver state-of-the-art and cost effective designs. 

Our capabilities include:

 

  • Route Selection
  • On Bottom Stability
  • Seabed Roughness & Span Analysis
  • Expansion & Upheaval Buckling Analysis
  • Material selection (Line pipe, Coatings, Insulation, appurtenances)
  • Pipeline sizing, & wall thickness determination
  • Crossings and Landfalls
  • Side taps, SSSV’s, Tie-ins
  • PLEM / PLET
  • Risk Analyses
  • Expansion Spools, Risers & J-tubes, Riser Clamps
  • Riser and Side Tap Protection Frames
  • Corrosion Assessment & Cathodic Protection
  • Route Selection
  • On Bottom Stability
  • Seabed Roughness & Span Analysis
  • Expansion & Upheaval Buckling Analysis
  • Material selection (Line pipe, Coatings, Insulation, appurtenances)
  • Pipeline sizing, & wall thickness determination
  • Crossings and Landfalls
  • Side taps, SSSV's, Tie-ins
  • PLEM / PLET
  • Risk Analyses
  • Expansion Spools, Risers & J-tubes, Riser Clamps
  • Riser and Side Tap Protection Frames
  • Corrosion Assessment & Cathodic Protection

Track record

 
Tideway

Sapref Pipelines, Durban, Stress Analysis

  • Pipeline Engineering and Design
  • South Africa

Pre-commissioning & IRM Services

After the pipeline system is successfully installed it has to be demonstrated that the system is fit for purpose and be prepared for introduction of the medium to be transported. 

Pre-commissioning usually consists of:

 

  • Checking for dents and ovality by running a Gauging plate through the pipeline
  • Filling with treated water
  • Hydrostatic test to demonstrate the structural integrity
  • Dewatering using air driven pigs
  • Cleaning, brushing, removal of debris, possibly passivating and rinsing
  • Drying to a specified dew point
  • Preservation by corrosion inhibitor or nitrogen

OI field engineers are available to manage and monitor these activities.

  • Checking for dents and ovality by running a Gauging plate through the pipeline
  • Filling with treated water
  • Hydrostatic test to demonstrate the structural integrity
  • Dewatering using air driven pigs
  • Cleaning, brushing, removal of debris, possibly passivating and rinsing
  • Drying to a specified dew point
  • Preservation by corrosion inhibitor or nitrogen

Track record

 
VBMS

Modular Pipelay System Offpipe Support

  • Installation project engineering
  • Somewhere, The World
 
Bluestream

Various Projects Project Engineer

  • Pipeline Engineering and Design
  • Netherlands
 
IRM systems

Above Water Tie-Ins (AWTI) Static Analysis

  • Pipeline Engineering and Design
  • Somewhere, The World
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