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Meet Our Students

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M. Emin Karagoz

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Emin Karagoz is working toward his MSE and graduated from Istanbul Technical University in 2021. Afterwards, he worked as a Production Engineer in TP-OTC for 1.5 years in the oil and CO2 Production fields. He has participated in different EOR operations and artificial lift methods.


Cesar Garcia

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Cesar Garcia is a Ph.D. Student and a teaching assistant of the Petroleum Engineering Department of the University of Tulsa.  Cesar received his B.E. Degree in Petroleum Engineering and his MS Degree in Hydrocarbon Engineering both from the Universidad Industrial de Santander in Colombia. He has more than 10 years of experience working in developing technology solutions for lifting, gathering, treatment, and transporting of heavy oils with ECOPETROL S.A. 


Cesar’s research interests include pipe flow modeling, fluid-structure interaction, and multiphase flow.  He has publications in his areas of interest, and patents related to dilution for transport and oil dehydration.  His current research is focused on developing a mechanistic model to predict critical conditions of pipe vibrations due to multiphase flow. Fitting turn elements are studied due to these generate high levels of vibration. His research project will permit have guidelines to design and operate pipelines including integrity aspects for possible induced vibration in oil and gas transport.


Erlon Santos

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Erlon Santos is a Ph.D. student and a research assistant at Tulsa University Fluid Flow Project (TUFFP). Erlon earned his B.S. degree in Petroleum Engineering at Federal University of Pelotas (UFPel) in Pelotas; RS - Brazil. with an additional degree at The University of Western Australia (UWA) in Perth; WA - Australia. He also received his M.S.E. in Petroleum Engineering at University of Campinas (UNICAMP) in Campinas; SP - Brazil. During his master’s degree, he developed a mathematical model and a computer simulator in MatLab of the intermittent gas lift (IGL) applied in the physical simulator LabGLI. The goal was to study the IGL applied to the experimental facility.  


Erlon’s research interests include petroleum engineering, petroleum production and multiphase flow. He is currently working with the 6" High Pressure Large - Diameter Pipeline Facility.

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Vusal Karimov

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Vusal Karimov is a Ph.D. student at the Tulsa University Fluid Flow Project. He comes to us from Baku, Azerbaijan.  

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Ryan McGregor

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Ryan McGregor is currently pursuing his BS in Petroleum Engineering at The University of Tulsa with a minor in Energy Transition. His work on the 6-inch high-low pressure facility focuses on the separation of liquid phases through a pipeline for testing requested by Saudi ARAMCO.

Ryan will be working on the operation of the 6 inch high and low pressure facility.


Gulnur Ualiyeva

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Gulnur Ualiyeva is PhD student.

Gulnur holds a BS from Kazakh-British Technical University in Kazakhstan and MS from the University of Tulsa, both in petroleum engineering.

Before joining TUFFP, she worked in international midstream company in Kazakhstan for 9 years.

Gulnur’s current research interest is on multiphase flow, specifically in downward two-phase flow.


Meet Our Staff


Cem Sarica

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Cem Sarica holds B.S. (1982) and M.S. (1984) degrees in petroleum engineering from Istanbul Technical University (ITU) and a Ph.D. (1990) degree in petroleum engineering from The University of Tulsa (TU). After serving as an Assistant Professor of Petroleum Engineering at ITU, he joined the research staff at TU in 1992, and was Associate Director of the Tulsa University Fluid Flow Projects (TUFFP) until 1998 when he joined the faculty at The Pennsylvania State University. He joined the Petroleum Engineering Department at TU in 2001. He is currently serving as Professor of Petroleum Engineering. His responsibilities include the directorships of both TUFFP, and the Tulsa University Paraffin Deposition Projects (TUPDP).

Cem's research interests are multiphase flow in pipes, flow assurance and oil and gas production. He has authored several publications on these subjects.

Cem is a member of both the Society of Petroleum Engineers (SPE) and the American Society of Mechanical Engineers (ASME). He served as an Associate Technical Editor of ASME Journal of Energy Resources Technology (JERT) from 1998 -2004. He has previously served as a member of the SPE Production Operations Committee and is a member of the SPE Journal Editorial Board. He was one of the recipients of the SPE's Outstanding Editor Award in 2000. He is a member of SPE Facilities and Construction Standing Committee. He is currently serving as the Chair of SPE Facilities and Construction Award Committee. In addition to his SPE activities, he serves as a Technical Advisory Committee member of BHRg's Multiphase Technology Conferences.

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Eduardo Pereyra

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Eduardo Pereyra received his M.S. and Ph.D. degrees in petroleum engineering from The University of Tulsa.  He holds two B.S. degrees from the University of Los Andes; one is in Mechanical Engineering and the other in System Engineering.

He started his career at the R&D center of the Venezuelan oil company PDVSA-Intevep.  He also worked for Multiphase System Integration (MSI) and at Chevron's Advanced Production Technology Unit as a Research Scientist Intern. Eduardo is an active researcher in the area of multiphase flow and its applications to pipelines, surface oil and gas facilities, artificial lift, separation, and metering systems.

Eduardo is currently an associated professor of the McDougall School of Petroleum Engineering. Eduardo is one of the TU professors associated with the University of Tulsa North Campus Research Facilities. This campus contains unique facilities and state of the art instrumentation for oil and gas-related research.

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Carina Sondermann

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Carina Sondermann is pursuing her D.Sc. Degree in Mechanical Engineering at the Universidade Federal do Rio de Janeiro (COPPE/UFRJ), in Brazil. She is a Mechanical Engineer and received her M.Sc. Degree in Mechanical Engineering from the same institution.

Carina’s research interests are fluid mechanics with emphasis on multiphase flow, pipe flow modeling and numerical simulation.


Carina is currently studying and developing a numerical strategy based on a transient one-dimensional approach, known as slug capturing, that can reproduce the physics of the intermittent two-phase flow. As part of this research, Carina performed an experimental campaign as a Visiting Scholar at The University of Tulsa to use as validation of the final slug capturing code. This research aims to assist the oil and gas industries in understanding the phenomena, as well as, improving the accuracy of slug flow simulations.

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Robert Sutton

Robert Sutton received a BS degree in Petroleum Engineering from Marietta College in May, 1978 and began work with Marathon Oil Company in Lafayette, LA in June.  Concurrent with full time work at Marathon, Rob pursued a MS degree in Petroleum Engineering at The University of Southwestern Louisiana (now University of Louisiana at Lafayette) which was received in December, 1983.

While in Lafayette with Marathon, Rob worked in the Operations (offshore, well completions, workovers, surveys & stimulation), Reservoir (reserve evaluations, production forecasting and economics) and Budget Control (district office budget administration) Departments.  In 1985 he transferred to Marathon’s Denver Research Center and worked in the Applied Technology Group where he worked with black oil and compositional reservoir models and EOS programs.  Rob also became the Marathon contact for industry programs at The University of Tulsa (TUFFP, TUPDP and later TUHWALP).  An interest in multiphase flow led Rob to develop in-house software for use in the areas of Nodal Analysis, gas well unloading, erosional velocity, and oil-gas-water PVT evaluation.  In 2001, the technology group relocated to Houston from Denver where Rob remained active in applied technology support.  Rob retired from Marathon on Jan.1, 2014 after 35.5 years of service.  He also received the 2014 SPE Production sand Operations award that year.

Rob remains active in the industry serving on various SPE committees, ALRDC and is a member of the API 19G Task Group for gas lift recommended practices.  He is a visiting scholar at the McDougall School of Petroleum Engineering for The University of Tulsa.  He is also active as a petroleum consultant.  Rob has participated in authoring 29 SPE papers with 10 published in SPE Journals.  He contributed to the oil PVT chapter in the SPE Petroleum Engineering Handbook and a chapter in the book titled Gas Well Deliquification, 2nd Ed.  Rob was a SPE distinguished lecturer during the years 2012-13 and 2015-16.  He has also given numerous talks on horizontal well performance and liquid loading at various ALRDC Gas Well Deliquification Workshop and SPE meetings.


Kelley Friedberg

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Kelley Friedberg holds a BA in Languages and Literature from the University of Oklahoma and received her MA in English at The University of Tulsa in May 2016. Kelley has worked at TU since 2002.

Kelley is currently responsible for executive team planning and monitoring of various consortia and projects; preparing and monitoring the various budgets; coordination of various sub-projects; and planning all aspects of two Advisory Board meetings per consortium per year. She is the primary representative of all consortia to consortia members. Kelley also is responsible for preparing business proposals to various entities to secure future research funding; preparing business reports for presentation to members; supervise Project Coordinator and part-time employees; assist in hiring of post-doctoral and other research associates, technicians, and other staff; oversee all consortia web presence (this is the main source of transferring deliverables to consortia members); and editing of project reports, theses, dissertations and papers for publication in various industry journals.


Scott Graham

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Mr. Graham is a Project Engineer for The University of Tulsa (TU) serving primarily the TU Fluid Flow Projects (TUFFP) and TU Paraffin Deposition Projects (TUPDP) consortia within the Petroleum Engineering Department. This consortium consists of sixteen international oil companies and focuses it's studies on fluid flow and paraffin deposition. His responsibilities include working with Master and Ph.D. students to develop innovative measurement systems and sensors; plus teach and transfer practical instrumentation and control knowledge to students. He has an Associates Degree in Electrical/Electronics and has over 23 years of experience in the application and development of instrumentation devices and systems. He is currently working on his Bachelors in Political Science. Prior to coming to TU, Scott was the Program Coordinator for the Electrical/Electronic program of study at Oklahoma State University (OSU) - Okmulgee. In addition to the administrative responsibilities of his position, he served as the advisor to the ISA student section and taught the Process Measurement and Control classes. He served in that position for five years.

Scott began his career working as a roustabout for Conoco NGP in Carlsbad, New Mexico. Later as an instrument technician Scott designed and installed automation systems for gas processing plants. He also performed new electrical construction and assisted in putting together an electrical/instrumentation training program classes for Conoco's associate engineers in New Mexico and West Texas.

In 1992 after working for Conoco and gaining experience elsewhere, his career lead him to operate his own company based in Broken Arrow, Oklahoma. Through Panel-Tek Inc., he designed, manufactured, and marketed chemical injection equipment, and electronic controls for the petroleum industry. From this work he holds several patents related to measurement of crude oil and related processes. The products produced included such items temperature and pressure measurement devices, flow computers, and data acquisition equipment. In 1997 Emerson Electric purchased Panel-Tek where he stayed on as Operation Manager for two years.

Scott enjoys working with students to help them to develop and master the technical skills needed to function in today's marketplace.


Jose Aramburu-Tinoco

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Jose Aramburu-Tinoco is a Research Technician for The University of Tulsa (TU). Jose worked at TU from 2004 to 2017 and then joined TU again in March 2018.  He has his Bachelor of Computer Information Systems from The University of Tulsa. 

Jose has spent his entire professional career as a research operations engineer, web designer, computer video/audio support professional, HAZWOPER and has assisted and conducted tests in labs and facilities.


Bonny Hardgrove

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Bonny holds a B.A. in Communications from Oklahoma Christian University. She has held positions as administrator and content editor in a number of fields and joined the TU Petroleum Engineering team in 2022. She intends to pursue her M.A. in English Literature at the University of Tulsa.

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Gabriel Soto Cortes

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Gabriel Soto-Cortes holds a B.S. degree from the Autonomous Metropolitan University in Physics Engineering and received his Master and Doctoral degrees in hydraulic engineering from the National Autonomous University of Mexico. Gabriel’s research interests are in hydraulics, computational fluid dynamics and transport phenomena, with special emphasis on clean technologies and risk prevention due to flooding (unconfined flows) and transport of dangerous substances (confined flows). Gabriel has collaborated with The University of Tulsa Fluid Flow Projects (TUFFP) since 2014 and is currently studying the effect of pressure on the evolution of intermittent flow in a slightly inclined pipe.

Gabriel has 25 years of experience in consulting, educational, and research areas, and enjoys working with students to help them reach their professional goals.


Meet Our Alumni


Ahmed Aql

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Ahmed Aql is a Ph.D. research assistant at Tulsa University Fluid Flow Projects. Ahmed received his B.Sc. and M.Sc. degrees in Petroleum Engineering from Kuwait University. His research interests include pipe flow modeling and slug flow. His work tends to improve understanding of two-phase oil and gas flow behavior and modeling at high pressures. Ahmed worked as a research assistant at Kuwait University and Kuwait Institute for Scientific research for almost a year and then as a beam pumping engineer and cost controller at a Kuwait-based contracting company for 3 years. Ahmed has served in Graduate Student Association at TU for two years as a senator and then as a secretary and the head of the Academic and Professional Development committee, and then as a President. Ahmed is a member of Phi Kappa Phi and a volunteer for the PetroPro program of OERB.

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Daler Dzhuraev

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Daler Dzhuraev is a research assistant at Tulsa University Fluid Flow Projects. 

Daler received his B.Sc degree in Petroleum and Natural Gas Engineering from Middle East Technical University (Ankara, Turkey). During his undergraduate studies, Daler has interned at Turkish Petroleum Corporation (TPAO) and Guney Yildizi Petrol (GYP) as a production engineer.

Daler earned his M.Sc degree in Petroleum Engineering from the University of Tulsa. His master’s thesis is focused on hydrate deposition behavior. 

Daler’s research interest include multiphase flow in pipes and flow assurance. His current research is focused on slug flow. 

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Gulnur Ualiyeva

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Gulnur Ualiyeva is working towards her M.S. in Petroleum Engineering at the University of Tulsa. As a part of TUFFP, her research interest is multiphase flow. Gulnur earned a B.S. in Petroleum Engineering at Kazakh-British Technical University, Kazakhstan. Gulnur has work experience in downstream. She worked in the oil transportation department for Atyrau-Kenkijak Pipeline.

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