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I am a versatile engineer that has fifteen years of experience.  A bulk of that experience has been in the front end engineering design of subsea field development with a focus on pipeline and flowline design.  This design experience ranges from route studies considering seabed side slopes stability and routing hazards to detailed lateral buckling and axial expansion studies.  Because of this experience, my peers have regarded me as having a deep understanding of the technical challenges that subsea field developments have and as an engineer who can be relied upon to solve those complex issues. 

Along with my experience in design of subsea pipelines, I have a strong background in the use of solid modeling analysis and CFD to study subsea structures and components. I have performed several projects modeling subsea structures and components to determine their stress and fatigue limits. With the many projects that I have performed over the years has made me into an engineer that has the experience and the talent to handle the most challenging projects for my clients.

I also served in the U.S. Navy aboard the U.S.S. Long Beach and was deployed to the Middle East in support of Operation Desert Storm in 1991. My duties onboard ship included surface radar scope monitoring, ship to ship communications, and various other Combat Information Center duties. While in the Navy I held a Secret clearance classification


Software and Skillsets

  • Extensive Knowledge of both ABAQUS and ANSYS
  • Pipeline Installation Analysis using ABAQUS, OrcaFlex, and Pipelay
  • SME on pipe-soil interactions
  • SME on issues related to High Pressure/ High Temperature
  • Extensive knowledge of piping system stress analysis
  • In-Depth Knowledge of ocean currents and wave motions
  • Extensive knowledge of natural frequency vibration and fatigue
  • In-depth Knowledge of fluid flow and CFD
  • Extensive knowledge of Pipeline routeing and use of Fleadermaus
  • Expert in Microsoft Word, Excel and Powerpoint
  • Excellent Communication and Technical Writing skills
  • Knowledgeable in Matlab
  • Experienced in Mathcad
  • Extensive knowledge of 3D modeling using industry leading Solidworks and Inventor

Programing Languages

  • Fortran
  • Visual Basic for Applications
  • Python
  • Learning C#

Work History

Doris Inc.

Jan 2015Mar 2015

Senior Pipeline Engineer

Hired as a subject matter expert regarding subsea pipeline traversing rugged seabed contours, knowledge of pipe-in-pipe systems for long distance pipelines and issues related to high pressure high temperature pipelines for the Nsiko project in Nigera West Africa. The project was put on hold and I was subsequently released from the company.


Jan 2009Dec 2014

Senior Engineer

  • Served as the Subsea Department SME on HP/HT pipelines pertaining specially to lateral buckling and axial walking
  • Served as the Subsea Department SME for the interpretation soil data lab results and for the calculation of pipeline soil spring models
  • Served as engineer lead for multiple projects of various sizes and complexity. Engineer lead duties included developing project schedule, review of all project technical reports and calculations, and advising junior engineers with the technical calculations assigned to them.
  • ENI Petroleum Milan Kashagan Project FEED Design - Performed the riser shore approach design for the 28" sour service Oil and Gas export lines from Island "D". The riser shore approach design included studying the effects of both artificial island settlement and ice rubble loadings on the end of the riser.
  • Shell BC-10 Project - Performed Installation analysis to determine the stress induced into the pipe of an inline sled as it passed over the stinger of the Lorelay pipe lay vessel and at the seabed touchdown point. The analysis was done to provide Shell and Allseas a second opinion regarding the stress results from Allseas' internal installation analysis.
  • MURPHY E&P CO. Thunder Hawk Gas lift Project – Performed a local FSI analysis to determine the pressure effect of the gas through a small orifice tee into the larger diameter jumper caused by increases and decreases in flow rates and pressures for input into fatigue calculation of the tee
  • Shell E&P West Boreas PLET Stress Joint Assessment – Responsible for the detailed FEA assessment of the pipe in pipe stress joint flange. This assessment detailed the analysis of the stress joint, connecting bulkhead and the PLET piping to ensure that no localized stress intensifications occur during installation and operational conditions on the stress joint/ bulkhead location.
  • ENI Petroleum USA Block Tee and Elbow Design - ENI Petroleum requested a design and specification for a general block tee and Elbow with a maximum internal pressure rating of 10,000 psi. The analysis was performed to ASME Section VIII Division 2 and prepared a design package, which included both written specifications and fabrication drawings.
  • WEIR SEABOARD - Performed detailed FEA analysis of the OVERSHOT Connector design for Shell Deepwater. The analysis consisted of demonstrating that the stresses in the OVERSHOT connector would not fail due to the forces and moments induced into the system from the pressure containment end cap loads.
  • EMAS AMC Cascade Chinook Installation - Provided third party FEA verification of subcontractor analysis of the flexible riser hang off stands. Ensured that the subcontractor applied correct loadings and followed API RP 2A design code.
  • MURPHY E&P Co. Dalmatian Field Development DC-4 Oil Flowline – Responsible for the mechanical design of the Pipe-In-Pipe oil flowline package. Package included inner and out pipe wall thickness design, cathodic protection and inner pipe internal fluid corrosion study, the in place route study analysis, preliminary end bulkhead design, preliminary installation feasibility study, tie-in study to the Petronius compliant tower, and the DC-4 well tie-in study, which where correlated into a single master design study report. During the construction phase of the project, the location of the wellhead was identified being on a soil mound, which was 10 foot above the planned location of the flowline PLET. Using Fleadermaus visualization software and 3D models developed by in-house designers and third party vendors, a true 1 to 1 scale of the entire well location was modeled. This allowed the team to study the seabed slope angles to check the installability of the equipment, which helped to identify locations that needed rectification prior to PLET laydown.
  • MURPHY E&P Co. Dalmatian Field Development DC-48 Gas Flowline – provided in-place route study and span assessment. Using a specialized developed Abaqus input file code, sections of the flowline that exceeded the pre-screening length were identified for detailed fatigue assessment. The detailed assessment was performed in a two phase process. The first phase was to identify and classify a more realistic current model then create a rainflow bin of predicted currents and percentage of occurrences over a year based on 20 year life span. Second phase was to identify both natural frequency of each span based on modal analysis of the span and not empirical natural frequency using either Shear7 or FatFree. This process allowed the team to screen all the spans so that none of the original spans identified as exceeding fatigue limits actually did so. This process was reviewed by DNV, as third party verification, and accepted by them. Along with performing the span assessment, performed the accompanying jumper pipe stress design calculation using Caesar II.
  • HESS: (West Africa) Okume Span Monitoring Program - With the experience and knowledge from the initial span mitigation campaign, helped the clients operations team to determine where the flowlines in the field were experiencing continued seabed erosion due to the high currents in the area.
  • PEMEX 24” Ixtal-A to Abkatun-D Pipeline Upheaval Buckling Study – Lead pipeline engineer performing upheaval buckling analysis as part of a study determining the effect of an upheaval buckle on the operating pipeline. This study was to review the original upheaval buckling and expansion design and determine why the calculated cover and rock heights were not sufficient to prevent the buried 24” pipeline from upheaval buckling. Provided guidance to team regarding the mechanics of pipeline expansion and buckling which occur as a result of high internal pressure and temperature. Reviewed all project analysis and recommendations to ensure the latest design guidelines according to DNV-RP F110 and to some extent SAFEBUCK were followed.
  • PEMEX 12” Yaxche-B to Interconnection Pipeline – Lead pipeline engineer performing upheaval buckling analysis as part of a study determining the best mitigation measure to ensure safe stable operation of the pipeline. This study was to review the original upheaval buckling and expansion design and determine if the proper cover and rock heights were sufficient to prevent the buried 12” pipeline from upheaval buckling. Provided guidance to team regarding the mechanics of pipeline expansion and buckling which occur as a result of high internal pressure and temperature. Reviewed all project analysis and recommendations to ensure the latest design guidelines according to DNV-RP F110 and to some extent SAFEBUCK where followed.


Aug 2002Dec 2009

Senior Engineer

  • Served as a part of INTECSEA’s FEA team and developed into a recognized engineer for the technical understanding of flange design, pipeline lateral buckling, and vortex induced vibration fatigue of pipelines. 
  • Helped in the training of INTEC personnel and the development of several in-house source codes for different analyses from lateral buckling to re-burial of exposed pipelines at shore crossings using ANSYS. 
  • Served on the team which wrote INTEC's guideline on Pipe-In-Pipe design.
  • Helped to interpret soil data lab results for the calculation of pipeline soil spring models
  • BP Mardi Gras Technical Support - Provided 3D modeling support and oversight of  third party FEA analysis verification of Murphy Oil's export oil and gas pipeline end terminations structures
  • INTECSEA Tension Leg Platform Support - Performed the flange design on the top tension risers top flanges to ensure compliance with API 6A.
  • ExxonMobil Sakhalin Island FSO 48" Swivel Flange - Performed secondary FEA and model verification of the 48" export line swivel flange.
  • BP GOM: Tubular Bells Project - Project technical specialist performing full 3D FEA lateral buckling and expansion analysis. Part of this analysis was to review both the vertical and lateral seabed slope gradients to determine the most likely locations for lateral buckles. Other duties included performing bottom roughness and route optimization. Routing optimization was performed using Fledermaus. Using Fledermaus, routing hazards were identified and route cross profiles were generated for use in the FEA analysis.
  • MURPHY EP CO: Thunder Hawk – Performed detailed design engineering for a dual flowline tieback system in 6000 feet of water. Provided technical experience in the field of HP/ HT flowlines to ensure a robust flowline design over the life of the field by both performing detailed FEA analysis of the flowlines and assisting other engineers on the team with less experience dealing with HP/ HT flowlines. Also performed the design of the export jumper connection to the Mardi Gras Proteus and Okeanos export pipelines.
  • SHELL: BC-10 – Performed lateral buckling study for infield flowlines to help client determine needed mitigation strategy for the field development.
  • CHEVRON: Blind Faith Field Development – Participated in the fast track conceptual to detail design of the dual wet insulated flowline in water depths of 7000-feet with HP/HT thermal expansion/ lateral buckling issues surrounding the short distance flowlines.
  • CHEVRON: Congo River Crossing – Performed a feasibility study on crossing the Congo River canyon by way of a deepwater crossing to avoid severe turbidity currents and mud flow. Preliminary crossing route selection and pipeline stability using an integrated method of both static and dynamic FE stability analysis
  • BP: Mardi Gras Project – Lateral tie-in equipment installation analysis, performed a comparison span analysis to ensure that the route up the Sigsbee escarpment was a preferred route from a free spanning pipeline point-of-view for the Mardi Gras Atlantis lateral, performed analysis on 4" relief valve piping bend to determine if internal vortex induced vibration caused fatigue failure of the bend
  • EXXONMOBIL: Kizomba Satellites - Project flowline engineer responsible for the pre-FEED analysis of the Pipe-in-Pipe and water injection flowlines for axial expansion and lateral buckling to determine whether further study during FEED was needed, provide technical guidance to other engineers on the project in regards to pipe-in-pipe design, performed Jumper VIV analysis of riser base jumpers along with the fatigue analysis due to riser based motion resulting from the free standing hybrid riser system
  • ANADARKO: K2 Field Extension - Project flowline engineer responsible for the re-design from the original project's pipe-in-pipe system to a wet insulation system. Provided guidance on preferred routes and determined what internal pressures current pipe stockpiles at various pipe yards could be rated for. This allowed the team to determine how to allot pipe to the different proposed additional well flowlines, which saved the client from having to purchase additional pipe. Performed bottom roughness analysis to determine location and length of pipeline spans and determined the fatigue life of the spans which did not meet the allowable span limits.
  • PETROBRAS: - (U.S.) Chinook to Cascade HIPPS Study – This feasibility desktop study was for the design of a subsea field with a high integrity pressure protection system (HIPPS) in water depths of 8900-feet to 8100-feet. This study included flowline design, cost estimates, and review of current installation vessels.
  • PIONEER Olowi Field Development Project – Performed flowline wall thickness, expansion, and lateral buckling calculations and fixed platform riser designs for multiple in-field flows.
  • ENI: K2 Field Development – The project was a subsea tie-back project that included 6 miles of pipe-in-pipe flowlines connecting two subsea production fields to the Marco Polo host platform. Wrote specifications for subsea valves and installation procedures for the subsea structures. Engineering duties included the design and analysis of the pipe-in-pipe bulkheads and flowline span and lateral buckling analysis. During the installation phase of the project, it was observed that several spans were longer than anticipated and a team was mobilized to address the issue. As part of the onshore support team, supported offshore engineers in the remediation analysis of the free spans. Also performed HP/HT analysis to support FEED conclusions that lateral buckling of the flowline would not compromise the integrity of the flowlines.
  • AMERADA HESS: (West Africa) Okume Complex Project – Provided technical support for the oversight of the installation contractor’s laydown initiation analysis by performing a third party review analysis using Orcaflex. During post installation ROV inspection several spans where observed to be both exceeding span limits and vibrating. Due to these observations, I worked with the onshore team to develop span rectification solutions and determine the fatigue life of the spans due to the unexpected high currents.
  • PETROBRAS: (U.S.) Canapu ESS-138 Tie-Back Design Study – Provided technical support to engineers performing the design of the pipe–in–pipe system, which included lateral buckling, thermal expansion, allowable span limits, and wall thickness for both inner and outer pipes. Along with technical support, my duties also included performing conceptual installation design to define allowable installation limits.
  • PETROBRAS: P55 Conceptual Bundle Tow – Performed conceptual tow engineering, on-bottom stability, in-place structural analysis, and wall thickness calculations
  • SHELL: Nigeria Bonga Field Development – Performed installation support and structural analysis on water injection sleds. This required the use of StruCAD*3D to analyze additional lifting tri-pod frames from the WT2-8 sleds along with other structural calculations for lifting padeyes. Detailed FE analysis of the hinge piece of the WT1 swinging door mudmat to ensure stiffing gussets could be removed when they were found to be in conflict with structural pipeline of the sled.
  • PETROBRAS: BGL-1 Stinger Redesign Verification - Engineer II – Performed a stinger stress verification on the redesign of the Petrobras laybarge BGL-1 using the structural software StruCAD *3D.
  • ESSO: Chad – Independent review of lifting analysis utilizing the software program StruCAD *3D for the static lifting and Orcaflex for the dynamic lifting of the jacket off of a barge by a separate lifting barge; review of the jacket, deck, and yoke structure.


Texas A&M University


B.Sc Maritime Systems Engineering

Maritime Systems Engineering is the equivalent degree program as the current Oceanengineer degree offered at both College Station and Galveston Campus of Texas A&M University


"Free-Span Remediation Studies for the K2 Pipe-in-pipe Flowlines"; M. Hensley, M. Fletcher, C. Routh, U. Eigbe, D. Ling; OTC 2006 No. 18312.