Director - Dr. Cem Sarica Research Technician - Franklin Birt
Associate Director - Dr. Eduardo Pereyra Research Technician - Don Harris
Research Associate - Dr. Tayfun Aydin Research Technician - Norm Stegall
Research Associate - Dr. Hamidreza Karami Research Technician - Craig Waldron
Research Associate - Dr. Ashwin Padsalgikar Research Assistant - Yasser AlSaadi
Senior Project Coordinator - Kelley Friedberg Research Assistant - Yilin Fan
Project Coordinator - Dianna Roe iResearch Assistant - Hendy Rodrigues
Visiting Research Professor - Dr. Abdel AlSarkhi Research Assistant - Duc Vuong
Project Engineer -Scott Graham  

Director - Dr. Cem Sarica

Cem Sarica

Contact: 918-631-5154; Email Dr. Sarica

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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Associate Director - Dr. Eduardo Pereyra

Eduardo Pereyra

Contact: 918-631-5114; Email Dr. Pereyra

Eduardo Pereyra received his M.S. (2006) and Ph.D. (2010) degrees in petroleum engineering from The University of Tulsa.  He holds two B.S. degrees from the University of Los Andes: Mechanical Engineering (2000) and System Engineering (2000).

From 2000 to 2003, Eduardo worked for the R&D center of the Venezuelan oil company PDVSA-Intevep.  In 2004, he joined The University of Tulsa as a Research Assistant.  During 2006 he worked for Multiphase System Integration (MSI) in the areas of multiphase transport, facilities design, and multiphase flow metering systems.  Eduardo continued to work as a Research Assistant at The University of Tulsa from 2007 to 2010.  In summer 2005, 2006 and 2007, he worked as a Research Scientist Intern at Chevron's Advanced Production Technology Unit.
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Research Associate - Dr. Tayfun Aydin

Tayfun Aydin

Contact: Email Dr. Aydin

Dr. Tayfun B. Aydin received his Ph.D. degree from University of Toronto (Canada, 2014), M.Sc. (2008) and B.Sc. (2005) degrees from Istanbul Technical University (Turkey) all in Aerospace Engineering. He joined the University of Tulsa Fluid Flow Projects (TUFFP) as a Research Associate in December 2013. He is also an active researcher in the TU Horizontal Well Artificial Lift Projects (TUHWALP).

Prior to joining to the University of Tulsa, Dr. Aydin conducted research mainly on flow control strategies to mitigate the flow induced vibrations. He also worked on other types of vortex dominated flows such as flow around airfoils and junction flows. Currently, as a Research Associate at TUFFP and TUHWALP, his primary responsibility is the integration of advanced flow measurement techniques, e.g. Wire Mesh Sensor (WMS) and Particle Image Velocimetry (PIV), to the multiphase flow research. While engaging in various projects in these consortia, he focuses on separated and intermittent two-phase flow, and the improvement of the closure relationships in the mechanistic models.

As an experimentalist, he is experienced in the use of various flow diagnostics such as PIV, WMS, Volumetric 3-Component Velocimetry (V3V), Constant Temperature Anenometry (CTA) in addition to standard experimental techniques. He is also proficient in multiphase flow modelling, numerical methods and computational fluid dynamics (CFD).

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Research Associate - Dr. Hamidreza Karami

Hamidreza Karami

Contact: Email Dr. Karami







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Research Associate - Dr. Ashwin Padsalgikar

Ashwin PadsalgikarContact: Email Dr. Padsalgikar

Dr. Padsalgikar finished his Bachelor of Engineering Degree from the University of Mumbai in Mechanical Engineering in 2008. He completed Master's thesis with the University of Tulsa Erosion/Corrosion Research Center (ECRC) in 2010. His focus for his Masters work was in the area Erosion/Corrosion. He joined Tulsa University Separation Technology Projects (TUSTP) in 2011 to pursue his PhD and successfully defended his dissertation in the Spring of 2015.

Dr. Padsalgikar joined Tulsa University Fluid Flow Projects (TUFFP) in 2015. He is currently working on droplet formation and break up in gas/liquid and liquid/liquid flows. He is also working on gas and high viscosity liquid flow in inclined pipes.

His research interests include emulsion behavior in multiphase pipelines and solid-fluid interaction in multiphase flows.

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Senior Project Coordinator - Kelley Friedberg

Kelley Friedberg

Contact: 918-631-5110; Email Kelley

Kelley Friedberg holds a BA in Languages and Literature from the University of Oklahoma and is currently pursuing her MA in English at The University of Tulsa. Kelley has worked at TU since 2002 and joined TUFFP in 2013.

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.
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Project Coordinator - Dianna Roe


Contact: 918-631-5111; Email Dianna

Dianna Roe holds an AAS in Business Administration. Prior to coming to TU in August, 2014, Dianna worked for the University of Oklahoma College of Medicine Dean’s office.

Dianna is currently responsible for utilizing organizational and clerical skills in performing both routine and special office tasks and other related duties; assists in monitoring expenses and assures budgets are correctly charged; assists in purchasing equipment and supplies for students and technicians; assists in organizing all Advisory Board meetings. Dianna also provides miscellaneous help as needed to the Senior Project Coordinator.
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Visiting Research Professor - Dr. Abdel Al-Sarkhi
Abdel Al-Sarhki

Contact: 918-631-5110; Email Dr. Al-Sarkhi

Al-Sarkhi Abdelsalam is currently an Associate Professor at King Fahd University of Petroleum and Minerals (KFUPM), Saudi Arabia. He holds a B.S. and M.S. in Mechanical Engineering from Jordan University of Science and Technology and a Ph.D degree in Mechanical Engineering from Oklahoma State University, Stillwater, OK. Before joining KFUPM he was a Research Associate in the Tulsa University Fluid Flow Project (TUFFP) at The University of Tulsa.  He served as an Assistant and Associate Professor at Hashemite University, Jordan from 2001-2006. He also worked as a Research Associate at the University of Illinois Urbana-Champaign with Prof. T.J. Hanratty’s multiphase flow group from 1999-2001. Dr. Al-Sarkhi has conducted research in the multiphase flow area since 1999; he has been the principle investigator on many research projects and is author of over 34 refereed journal publications.

The main research interests of Dr. Al-Sarkhi are in the field of multiphase flow and thermo-fluid sciences.
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Project Engineer - Scott Graham

Scott Graham

Contact: 918-631-5147; Email Scott

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.
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Research Technician - Franklin Birt

Franklin Birt

Contact: (918) 631-5140; Email Franklin

Franklin Birt is an electronics technician joining the Fluid Flow group after working for the Hydrates group for the past 3 years. Before coming to The University of Tulsa, Birt worked for more than 20 years in the electronics industry. At Time Mark Corporation, he worked as an engineering technician and draftsman, designing and mass producing custom industrial controls and three-phase power monitoring equipment. He was recruited from Time Mark by Panel-Tek Inc., a design and development company specializing in oilfield related electronics and equipment, to serve as an engineering technician, circuit board designer, and customer service representative. He then moved to Control Devices Inc., an industry leader in pipeline pig locating and tracking equipment, Birt worked as a circuit board and electronics packaging designer and championed the development of innovative manufacturing processes and practices. He then moved to Tucker Technologies, the technology division of Tucker Energy Services, as a circuit board designer and later as the Manufacturing Group Leader where he supervised the Manufacturing and Test departments. Tucker Technologies designs and manufactures state of the art downhole logging tools and software.
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Research Technician - Don Harris

Don Harris

Contact: (918) 631-2350; Email Don

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Research Technician - Norm Stegall

Norm Stegall

Contact: (918) 631-5133; Email Norm

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Research Technician - Craig Waldron

Craig Waldron

Contact: 918-631-5131; Email Craig

Craig has 20 years experience working as a research technician in labs and pilot plants for Du Pont and Conoco prior to coming to work at The University of Tulsa in April 2001.
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Research Assistant - Yasser AlSaadi

Yasser AlSaadiContact: 918-631-5138; Email Yasser

Yasser Alsaadi holds B.S. degree from King Fahd University of Petroleum and Minerals in Saudi Arabia, and a M.S. degree from the University of Tulsa. He worked as a research assistant in his M.S. with TUFFP and studied Liquid Loading in Highly Deviated Gas Wells. Yasser currently works for Saudi Aramco as a flow assurance engineer, and in fall 2014, he return to TUFFP to pursue a Ph.D. degree in Petroleum Engineering.
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Research Assistant - Yilin FanYilin Fan

Contact: EMail Yilin

Yilin Fan earned her B.S. in Oil and Gas Storage and Transportation Engineering from China University of Petroleum (East China) in 2009. She joined University of Tulsa in Fall 2010 as a Research Assistant in TU High-Viscosity Oil Projects (TUHOP) and received her M.E. degree in Petroleum Engineering in 2012. She joined in TU Fluid Flow Projects (TUFFP) as a Research Assistant in 2013 to pursue her Ph.D. degree in Petroleum Engineering. Yilin is currently working on “Onset of Liquid Accumulation in Oil and Gas Pipelines.”. Back to Top

Research Assistant - Hendy Rodrigues
Hendy Rodrigues

Contact: Email Hendy

Hendy Rodrigues has B.S. and M.S. degrees in Mechanical Engineering from Federal Technical University at Parana (UTFPR) - Brazil. He has being working in Petrobras Research Center since 2008, with the Flow Assurance and Artificial Lift Technology Development Group. Hendy is working towards his Ph.D. in Petroleum Engineering under Dr. Sarica supervision on the TU Fluid Flow Projects (TUFFP).
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Research Assistant - Duc Vuong

Duc Vuong

Contact: Email Duc

Duc Vuong joined the TUFFP team as a Research Assistant to pursue his Ph.D. degree in Petroleum Engineering in the spring 2013 semester. He has B.S. (2007) and M.S. (2009) degrees in Petroleum Engineering from The University of Tulsa. Duc earned his M.S. working as a Research Assistant on the TU High-viscosity Oil Projects (TUHOP) team performing experiments on high-viscosity-oil and water two-phase flow. He worked for PetroVietnam Exploration and Production Company in Vietnam from 2010-2012. He is currently working on a 6-inch loop studying high pressure liquid loading in oil-gas two-phase flow. Duc passed the Ph.D. qualifying exam in August 2013 and successfully defend his dissertation proposal in November 2014.
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