YUN, Geng

Spring, TX *****

Cell: 720-***-****

Email: ac0bqe@r.postjobfree.com

KEY QUALIFICATIONS

Ph.D. in Mechanical Engineering, 6+ year industry experience as a mechanical engineer. Strong background in structural design, stress/strength analysis, modeling&simulation, failure analysis. Excellent teamwork, communication and interpersonal skills. Great presentation skill. ENGINEERING SKILLS

- New product design and development, validation and veri cation, mechanical testing

- Structure stress, strength and fatigue analysis (linear and nonlinear FEA)

- Modeling&simulation for complex structural system static/dynamic response

- Advanced mechanical modeling and numerical algorithm development

- Failure analysis and risk assessment

- Data characterization and interpretation

SOFTWARE SKILLS

ABAQUS

for nite element analysis (FEA); MATLAB

for programming and data processing; PTC

Creo

for 3D modeling; C/C++ programming; some experience with Maple for analytical derivation and LabVIEW

for data processing.

WORK EXPERIENCES

Pegasus Vertex, Inc., Houston, TX

2017 to Present Research and Development Engineer

Schlumberger, Houston, TX

2014 to 2016 Sr. Mechanical Engineer @ Rankin Technology Center 2010 to 2014 i-DRILL R&D Engineer @ Rankin Technology Center EDUCATION

University of Colorado, Boulder, CO

2007 to 2010 Ph.D. Mechanical Engineering

Tsinghua University, Beijing, China

2000 to 2006 Ph.D. Engineering Mechanics

China Agricultural University, Beijing, China

1996 to 2000 B.Sc. Automotive Engineering

INDUSTRIAL EXPERIENCES

New Product Development - Downhole Drilling Tools

- Developed next generation casing drilling, liner drilling and casing milling systems

- Designed and optimized cutting structures of drill bit, reamer and window milling systems

- Validated and veri ed new designs by FEA (ABAQUS) and drill-string dynamic simulations

- Wrote test plans, executed multiple lab tests and eld tests

- Assessed risks of eld application failure and recommended eld operation practice BHA (Bottom Hole Assembly)/Drill-string Design and Optimization

- Drill bit and drilling tools selection for improving drilling e ciency, stability and durability

- Drill bit and drilling tools vibration identi cation and mitigation

- Drill-string torque and drag analysis, sinusoidal and helical buckling prediction

- Prediction of mud motor and RSS (Rotary Steerable System) steering performance

- Drill-string fatigue damage accumulation prediction and risk assessment FEA Analysis (ABAQUS) for Multiple Drilling Tool Components

- Real time extender tube stress/deformation analysis under shock and vibration condition

- MWD/LWD components stress and structural analysis under complex loading conditions

- Stress/strength/fatigue analysis of rotary shouldered and stub acme threaded connections Development and Validation of Drilling Simulation Software

- Developed multiple advanced drilling tool mechanical models YUN, Geng 2/2

- Implemented drilling tool mechanical models into an in-house drilling simulation software

- Developed real time fatigue accumulation tracking algorithm for drill-string components

- Created fatigue property database for various drill-string components

- Simulated various cutting structures’ interaction with various types of rocks

- Validated drilling simulation software by theoretical solutions and lab/ eld test data

- Validated PDC bit metal cutting model by characterizing lab test data Failure Analysis for Multiple Downhole Drilling Tool Field Applications

- Hydra Jar BHA twist o, casing drilling system twist o

- Window milling system failure to pass through casing window and mill damage

- Turbine and mud motor shaft crack analysis

- Mud motor and RSS failure to build wellbore trajectory angles Drilling Data Interpretation

- Collected and analyzed massive downhole drilling dynamic data

- Performed data analytics to identify trends, events and risk of downhole dynamics Training and Mentoring Project Engineers

- Trained project engineers from global Geomarkets

- Reviewed and advised on reports of project engineers from global Geomarkets RESEARCH ACHIEVEMENTS

Novel Computational Model and Multiscale Finite Element Technique for Solid Materials

- Developed theoretical basis for resonant mass sensing

- Developed nonlinear, multiscale nite element technique for coupled thermomechanical behaviors

- Established instability criterion for defect nucleation process of face-centered cubic (FCC) crystal

- Investigated bending behaviors and properties of metal and silicon nanowires Size-dependent plasticity theory and numerical modeling

- Developed size-dependent plasticity theories and computational models

- Identi ed wellposedness of lower order size-dependent plasticity theory by the method of characteristics for nonlinear partial di erential equations (PDE)

- Developed nonlinear, large deformation constitutive model for size-dependent solid materials

- Investigated microscale indentation, bending, torsion, void growth, crack propagation and lm/substrate PATENTS, PUBLICATIONS & PROFESSIONAL SERVICES

- I have 3 patents led/pending, 2 SPE (Society of Petroleum Engineers) papers

- I am the author of 12 scienti c journal publications (9 rst-authored)

- I have reviewed 70+ articles for 20+ international journals including Mechanics of Materials, European Journal of Mechanics A/Solids, Computational Mechanics, Composite Science and Technology and others

- I have been awarded Recognized Reviewer Status by European Journal of Mechanics A/Solids PROFESSIONAL DEVELOPMENT & TRAININGS

- OFS3 Training Course (with certi cate), Schlumberger Advance Program, 2014

- Reservoir Geomechanics (with certi cate), Stanford University online course, 2015

- LabVIEW training (with certi cate), National Instruments, 2015

- Animation in PTC Creo (with certi cate), Impac Systems Engineering, 2015

- Workshop for ANSYS, 2015

- Workshop for Shock & Vibration, 2016

HONORS & AWARDS

- Top 1 score in Ph.D. Preliminary Examination, University of Colorado, Boulder, 2008

- FaMaTong Award (Top 5%), Tsinghua University, Beijing, China, 2003, 2004

- Tsinghua University Schoolwork Excellence Award (Top 5%), Beijing, China, 2001

- Outstanding Student of China Agricultural University, Beijing, China, 1997, 1998, 1999

- Outstanding Student of Beijing City, Beijing, China, 1999

- Prize winner of National English Contest for Undergraduates, Beijing, China, 1998

- Prize winner of Undergraduate Physics Contest, Beijing, China, 1997

- Prize winner of Undergraduate Mathematics Contest, Beijing, China, 1997, 1998

- Prize winner of National Mathematics Contest for high school students, China, 1995

Contact this candidate