Mark Hensley has over 15 years of experience in subsea pipeline design, construction management, and material inspection. He has extensive experience performing finite element analysis to design subsea pipelines, jumpers, and structures. Recently, he has focused on improving analysis practices at his company by developing Excel programs to streamline the evaluation of finite element analysis results. He currently works as a senior pipeline engineer, where his responsibilities include providing technical guidance and support to evaluate challenges on projects.

1. Mark Hensley
36714 Canyon Rd, Wallis, TEXAS 77485
Seaggie1@gmail.com
Ph: (832) 865-0127
Summary
15 years of experience in design of subsea pipelines and structures, construction
management, and construction material inspection. I have extensive experience in
Finite Element Analysis design and installation of subsea pipelines, jumpers, pipe-
in-pipe systems, fixed platform risers and subsea structures. My experience also
includes extensive experience with pipeline span analysis and remediation post-
installation pipelines. The last 5 years has been on the continual improvement of the
company analysis practices by developing Excel programs to improve the analysis of
FEA program results. These improvements resulted in the reduction of time
engineers needed to evaluate FEA results. Along with supporting departments
engineering program needs, I have also served as an in house technical specialist
consultant to help evaluate technical challenges a project may have and provide
guidance and support in resolving those challenges.
Skills
 Extensive Knowledge of both
ABAQUS and ANSYS
 Programing skills in Excel VBA,
Fortran and Python
 Pipeline Installation Analysis
using OrcaFlex, OFFPIPE,
ABAQUS and ANSYS
 Jumper and rigid riser design
using Caesar II
 Design and Installation of
pipeline span remediation
 Highly proficient in Microsoft
Word and Excel
 Excellent Communicat ion
skills
 Skilled Technical Writer
 Experienced in MATLAB and
Mathcad
Experience
Senior Pipeline Engineer Jan 2015-Present
DORIS, INC Houston, TX
 Chevron Nsiko Project - Work with the pre-feed team to prepare RFQ and work
scope packages to develop a class 1 cost estimate of the subsea field
developments for the project.
Senior Engineer III Jan 2009-Dec 2014
PEGASUS INTERNATIONAL, INC Houston, TX

2.  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.
 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.
 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.
 Shell BC-10 Project - Performed Installation analysis to determine the stress
induced into the pipe of a inline sled as it passes 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.
 HESS: (West Africa) Okume Span Monitoring Program - Helped the Clients
operations team with the experience and knowledge from the initial span
mitigation campaign to determine that the flowlines in the field were
experiencing continued seabed erosion due to the high currents in the area.
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.
 ENI Petroleum USA Various Projects - Served as technical advisor on several
simultaneous projects. I supervised junior engineers performing calculation s
for flowline thermal expansion and lateral buckling. Along with overseeing
those calculations, I also supervised junior engineers performing bottom
roughness analysis in the FEA code Abaqus.
 MURPHY E&P CO. Thunder Hawk Gas lift Project – Performed a local CFD
analysis to determine the effects of the gas being cycled through a small
orifice tee into the larger diameter jumper to determine the fatigue effects on
the tee caused by increases and decreases in flow rates and pressures.
 Shell E&P West Boreas PLET Stress Joint Assessment – Responsible for the
detailed FEA assessment of the pipe in pipe stress joint flange for the end
PLETs. 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 the effects of the operational
loads on the stress joint/ bulkhead location.
 Bluewater Industries Clipper Bulkhead/ Anchor Flange Assessment –
Responsible for the detailed FEA assessment of the pipe in pipe end bulkhead
which acts as the anchor flange for the end PLETs. This assessment detailed the
analysis of the bulkhead and the surrounding PLET structure to ensure that no
localized stress intensifications occur during installation and the eff ects of
the operational loads on the bulkhead location where the inner and outer
pipes transition into the anchor flange.

3.  MURPHY E&P Co. Dalmatian Field Development – Responsible for the
mechanical design of the Pipe-In-Pipe oil flowline, which entailed performing
both the in place analysis, preliminary end bulkhead design and correlating
work performed by others into the final mechanical design report. Working
with AUV detailed digital terrain models in the Fleadermaus software
package, processed detailed 3D route contouring models for use as the seabed
surface in Abaqus. This process provides the In-Place analysis performed in Abaqus
a more realistic seabed surface to identify areas of spanning and a
realistic pipe movement on the seabed due to t he irregularities of the seabed.
Using the seabed contours, performed the analysis for the pipe -in-pipe oil
flowline in place assessment to identify location of possible pipeline
spanning and pipeline snaking if any occurs. The end bulkhead analysis was a
preliminary assessment of a typical transition end bulkhead using both the
worst case installation operation loads to determine the bulkhead limits.
Along with the mechanical design of the pipe-in-pipe oil flowline, performed
the detailed bottom roughness and free span analysis for the single pipe gas
flowline. This analysis required the identification of multiple spans that
exceeded the onset criteria for both in-line and cross flow VIV. After the spans
were identified, the fatigue life for each span was determined using FATFREE,
which was verified by DNV third party verification consultants. During the
construction phase of the project, the client became worried about the
location of the wellhead relative to the planned location of the PIP PLET.
Using Fleadermaus and using 3D models developed by both the 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 at the
location of all the equipment to be installed to check the install ability of the
equipment, which helped to identify locations needed rectification.
 Fluor – Secondment to Fluor Corporation to perform high pressure/ high
temperature analysis on several field development projects. Performed and
provided guidance to others regarding the proper analysis of high pressure/
high temperature analysis. Also provided technical guidance on the use of
SageProfile3D for the analysis of pipeline bottom roughness to ensure the
different pipelines did not exceed allowable free span lengths.
 Noble Galapagos Field Development Flowline – Provided third party design
review of the flowlines for the Galapagos Field Development for Noble
Energy and determine if a proposed alternative method of wet insulation pipes
could be used regarding of the effects of high pressure and high temperature
and the safety of the design to pipeline failure due to high stress low cycle
fatigue.
 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 has on the operating 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 24” pipeline from upheaval buckling and determine what might
have caused the pipeline to upheaval buckle. Provided guidance to team
regarding the mechanics of pipeline expansion and buckling which occu r 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.

4.  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.
 Williams Seahawk Bypass Manifold – Project piping and jumper lead engineer
responsible for the fast track design analysis and drawings for three different
jumper designs and manifold piping that was needed due to a valve blockage on
the William Seahawk PLET. Ensured timely delivery of all drawings and
interfaced with client, vendors, surveyors and fabrication yard to ensure no
bottlenecks of information occurred. Because of UniversalPegasus' team
effort, Williams was able to go online by the contract stipulated date.
Senior Engineer August 2002-Dec 2009
INTECSEA Houston, TX
 Helped in the training of INTEC personnel and the development of several
in-house source codes for different analysis 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. Software champion for
INTECSEA's ANSYS and SAGE Profile 3D programs from June of 2004 to 2009
with duties including: coordination between the Houston office and
INTECSEA's international offices to ensure optimal use of the limited license
available and served as the point of contact between the software companies
and INTECSEA.
 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.
 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 needed to be done. Provide technical guidance to other engineers
on the project in regards to pipe-in-pipe design. Performed Jumper VIV
analysis of riser base jumpers.
 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 determining what internal
pressures current pipe stockpiles at various pipe yards could
be rated to. This allowed the team to determine how to allot pipe to the
different proposed addition well flowlines, which saved the client from
having to purchase additional pipe. Performed bottom roughness analy sis to

5. determine location and length of pipeline spans and determining the fatigue
life of the spans which did not meet the allowable span limits .
 MURPHY EP CO: Thunder Hawk – Performed detail design Engineering for a
dual flowline tieback system in 6000 ft water depth. 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.
 PETROBRAS: (U.S.) Canapu ESS-138 Tie-Back Design Study – Provided technical
support for 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, duties also included
performing conceptual installation design to define allowable installation
limits.
 AMERADA HESS: (West Africa) Okume Complex Project – Provided technical
support for the oversight of the installation contractors laydown initiation
analysis by performing a third party review analysis using Orcaflex. During
post installation ROV inspection several spans where observed. 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: P55 Conceptual Bundle Tow – Performed conceptual tow
engineering, on-bottom stability, in-place structural analysis and wall
thickness calculations.
 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.
 PETROBRAS: - (U.S.) Chinook to Cascade HIPPS Study – This feasibility desktop
study 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 – This project involved the design
of eight flowlines connecting two satellite platforms to a control platform
with four flowlines going to each of the two satellite platforms. Three
flowlines from the control platform to three subsea PLETs, which connected to
a FSO via flexible risers. Flowline wall thickness, expansion, and lateral buckling
calculations as well as the fixed platform riser designs.
 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. Writing of the subsea valve
specifications for the subsea structures and installation specification
requirements. Along with writing specifications, engineering duties included the
design and analysis of the pipe-in-pipe bulkheads, flowline span analysis
and lateral buckling analysis. During the installat ion phase of the project, it
was observed that several spans were longer than anticipated and a team
wasmobilized to address the issue. Worked as part of the onshore support team

6. assisting engineers offshore in the analysis of the remediation of the free
spans and performed HP/HT analysis to support FEED conclusions that lateral
buckling of the flowline would not compromise the integrity of the flowline.
 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 Petrobra s laybarge BGL-1
using the structural software StruCAD *3D. Stinger geometry & design loads
were taken from INTEC's previous design. Structural evaluation of the upper
hitches on the stinger to insure that stress concentrations will not occur. Each
upper hitch tubular member has four scalloped areas to avoid double full
penetration welds. The scallops were analyzed using the FE program ANSYS.
 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.
 CHEVRON: Congo River Crossing – Performed work on 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 analysis using an integrated method of using both static
stability analyses with dynamic FE stability analysis to ensure pipeline
st abilit y.
 BP: Mardi Gras Project – Lateral tie-in equipment installation analysis,
thermal expansion analysis and material take -offs. 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.
Civil Engineer April 2001-August 2002
SUNLAND ENGINEERING COMPANY
 Const r uction management t eam member wor king for a count y engineering
depar tment's r oad and br idge const ruction div ision, which inv olved
ov er seeing t he const ruction pr ogr ess, maintaining const ruction
document ation, pr ocessing change or ders, facilit ating changes in t he design,
coor dinat ing communicat ions between cont ractor, engineer's consult ant, and
count y engineering officials, and r unning pr ogr ess meetings between all
par t ies inv olved in t he pr oject
 As par t of t he design t eam, r esponsibilit ies included t he following wr it ing
design specificat ions, dr awing r evisions, documentation qualit y cont rol, and
mat er ial quant ity t ake-offs.
Design r epr esentative dur ing t he pr ojects const ruction phase.
Per for med under ground ut ilit ies r oute selection t o ensur e t he r outes complied
wit h all cit y , st ate and federal r equir ements.
Pr oject s included par king lot pav ement f ailur e analy sis and r edesign,

7. dr ainage systems, t he New Bayport shipping t erminal pav ing and for ce main
designs, incor por ating capit al impr ovement pr ojects for an air por t int o an
updat ed layout map, and v ar ious st reet impr ovement designs.
Project Manager/ Engineer Technician Jan 1999-Jan 2000
TERRA-MAR CONSULTING ENGINEERING June 2000- April 2001
 duties included supervision of construction material quality assurance of
over 25 different projects ranging from road paving to multistory buildings,
and pre-construction review of materials used to ensure compliance with
project design specifications, represented the testing lab at construction
progress meetings, prepared and reviewed all testing lab reports for projects
managed, gave clients recommendations on lab test failure resolution options,
managed the day to day operations of 35 engineering technicians and materials
testing subcontractors, maintained lab supplies and acquisitions, and
maintained the labs A2LA certification logs and records.
Performed geotechnical site investigations with the overseeing of drillers,
bore logs and both onsite and lab soil classifications.
Ensured project geotechnical requirements were satisfied.
Stress Analysis Jan 2000-June 2000
EV CONSULTING INC
 Performed finite element analysis on stress effecting deepwater
drilling/production risers due to wind, wave, and currents, evaluation of
structural loads and weights, drawing structural designs on AutoCAD, writing
computer programs to solve complex mathematical operations, prepared
presentations used in meetings with clients, and coordinated day -to-day office
operations.
Education
Bachelor of Science:Maritime Systems Engineering May 2000
Texas A&M University Galveston, TX
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
Publication
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.