flemingsPeter Flemings
Co-Director of UT GeoFluids Consortium pflemings(at)

Dr. Flemings studies stratigraphy and flow in porous media. He uses seismic, well, and core data to characterize subsurface systems, he uses theoretical modeling to study stratigraphic and hydrodynamic evolution, and he uses laboratory analysis to study geomechanical properties of low permeability rocks. Dr. Flemings is a professor in the Department of Geological Sciences, and a Research Scientist at both the Bureau of Economic Geology and the Institute for Geophysics.

jack germaineJohn Germaine
Co-Director of UT GeoFluids Consortium

John “Jack” Germaine is a world leader in experimental methods in geotechnical analysis. In recent years Jack has worked on small-strain nonlinearity of normally consolidated clay and has explored factors affecting the initial stiffness of cohesive soils. Jack is a professor in Civil an Environmental Engineering at Tufts University and holds a research affiliate appointment at MIT.

athma bhandariAthma Ram Bhandari
Research Associate

Athma earned his Ph.D. (Geomechanics and Geotechnical Engineering) from University of Southampton, M. Eng degree in Civil Engineering (Applied and Rock Mechanics) from the University of Tokyo, and B. E. degree in Civil Engineering from Tribhuvan University, Nepal. Athma's main research interests lie in experimental geomechanics, more specifically, laboratory study of deformation and flow in geomaterials (soils and rocks). In his current research, Athma measures shale permeability under reservoir pore and confining pressure conditions.

NikolinakouMaria-Katarina Nikolinakou
Research Associate

Maria is a Civil/Geotechnical Engineer. She earned her ScD from MIT in 2008, her MSc from MIT and her Diploma from NTUA, Greece. She specializes in theoretical soil mechanics and the constitutive modeling of earth materials. She is interested in understanding the stress state within and around salt bodies. Before joining the Bureau, Maria worked as a postdoc for Shell in the Depleted Drilling Group.

mahdi moghadamMahdi Heidari
Postdoctoral Fellow

Mahdi earned his PhD in Civil-Geotechnical Engineering from UT at Austin in 2013 and his MSc degrees from SUT and UT, Iran. He specializes in reservoir geomechanics, finite element modeling, and mathematical modeling of geomaterials behavior. His current research focuses on the estimation of the stress and pore pressure fields in sediments near salt bodies.

kehua youKehua You
Research Associate

Kehua joined UT GeoFluids in June 2013. She earned her Ph.D. in geology from Texas A&M University in 2013, and her B.S. in environmental sciences from University of Science and Technology of China in 2008. She specializes in theoretical and computational hydrogeology, contaminant hydrology and reservoir simulation. Her primary research interest lies in fluid flow and transport in subsurface environment.


tessa greenTessa Green
Project Manager

Tessa joined UT GeoFluids in November of 2010. She is responsible for project management and marketing activities of the UT GeoFluids Consortium. She is the webmaster, logistic person, and all around answer lady. In addition Tessa is responsible for coordinating the annual UTGeoFluids meeting and oversees financial management of the consortium.

Peter PolitoPeter Polito
Laboratory Manager

Peter manages the UT GeoFluids Laboratory where he oversees all experimental work—designing and building new experimental equipment, establishing new experimental programs and procedures, and ensures safety is always in the forefront. He has experience in designing high-pressure experimental apparatuses, data acquisition systems, LabVIEW programing, along with a suite of esoteric skills that come in handy around the lab. Peter also oversees the BEG’s laboratory safety program. He received a BS and MS in Geology from San Francisco State University.


Taylor Borgfeldt
Graduate Student, UT Austin

coming soon

kris darnellKris Darnell
Graduate Student seeking PhD, UT Austin

Kris joined the UT GeoFluids consortium in the Spring of 2013 after completing his M.S. degree from the University of Chicago where he worked on topics in glaciology. He was a former member of the consortium as a research associate in 2010 and also a former student of UT-Austin where he completed his B.S. degree in Civil Engineering in 2008. His research interests lie at boundary between numerical and experimental approaches to fluid dynamics problems. He plans to pursue his PhD research on understanding the pore-scale evolution of a methane hydrate sedimentary system undergoing phase transition.

Amer DeiriehAmer Deirieh
Graduate Student seeking PhD, MIT

Amer is a Ph.D candidate in the Department of Civil and Environmental Engineering at MIT studying geotechnical engineering. His research is dedicated to the quantification of mudrock microfabric through image analysis of high resolution SEM micrographs. In particular, he is investigating micro-textural features causing permeability anisotropy of mudrocks.

gaoBaiyuan Gao
Graduate Student seeking PhD, UT Austin

Baiyuan joined UT GeoFluids group in the fall of 2010 after earning her B.S. in resource exploration engineering from China University of Petroleum. Her research interests are pore pressure prediction, basin modeling and petroleum system. Baiyuan is currently working on pore pressure prediction within dipping reservoirs. She will systematically study the effects of reservoir relief, shale properties, and 3D geometry on reservoir pressure. She will also develop simple approaches to predict the in-situ reservoir pressure.

GeChunwei Ge
Graduate Student seeking SM, MIT

Chunwei is a graduate student seeking SM at MIT. Chunwei joined the UT GeoFluids group in 2013 and will be doing some basic material characterization testing and researching on the possibility of resedimentation and semectite/illite transformation.

landonAnthony Hanley
Graduate Student, Tufts University

Anthony Joseph Hanley joined UT GeoFluids in 2015. He has a great interest in all aspects of Geotechnical Engineering. Anthony completed a case study on the design of an open well caisson being sunk into ground containing artesian pressures as part of his final year project in NUI-Galway. He is currently studying a MS in Civil and Environmental Engineering, specializing in Geo-systems Engineering under the supervision of John Germaine

landonLandon Lockhart
Graduate Student, UT Austin

coming soon

kevin meazellKevin Meazell
Graduate Student seeking PhD, UT Austin

Kevin joined the GeoFluids group in spring of 2015. He has a M.S. in Geoscience from the University of Nevada - Las Vegas, and a B.S. in Geology from the University of Georgia. Kevin uses seismic interpretation to research the origin and distribution of methane hydrates in the Gulf of Mexico.

Dylan MeyerDylan Meyer
Graduate Student seeking PhD, UT Austin

Dylan joined the UT GeoFluids consortium in the fall of 2012 after graduating with high honors from Eckerd College with a B.S. degree in Marine Science (geophysics concentration) and a B.S. degree in Computer Science in May of that same year. His interest in geophysical research has been cultivated through numerous undergraduate internships including the Wood Hole Oceanographic Institute (Summer 2009), US Geological Survey (Summer 2010 and Summer 2012), and Incorporate Research Institutes for Seismology/Center for Earthquake Research and Information (Summer 2011).

Taylor NordquistTaylor Nordquist
Graduate Student seeking SM, MIT

Taylor is a Masters student studying Geotechnical Engineering at MIT. While earning a BS degree in Civil Engineering from Brigham Young University, he spent summers doing lab & quality assurance testing for a small consulting firm in Utah, Applied Geotechnical Engineering Consultants. He joined the UT Geofluids group in 2013, and plans to work with permeability & resistivity anisotropy in resedimented clays.

Will Pinkston
Graduate Student, UT Austin

coming soon

Deniz Ranjpour
Graduate Student, Tufts University

Deniz joined UT GeoFluids in 2015. She is a graduate of Bogazici University/Turkey with a Master’s degree. She is attending Tufts university pursuing a PhD in civil engineering with Dr. Germaine.


adamsAmy Lynn Adams, PhD., MIT

Amy's work involved laboratory experiments on resedimented Boston Blue Clay and includes flexible wall constant head tests as well as constant rate of strain (CRS) tests. Cubic specimens are used to allow multidirectional testing on a single specimen in the constant head device.

MIT Thesis: Laboratory evaluation of the constant rate of strain and constant head techniques for measurement of the hydraulic conductivity of fine grained soils

bettsWilliam Betts, M.S., UT AUstin

William studied consolidation and deformation of mudstones in the Nankai Trough area of offshore Japan. He joined Halliburton after graduation in 2014.

UT Thesis: Compressibility and Permeability of Gulf of Mexico Mudrocks, Resedimented and In-Situ.

donnie brooksDonnie Brooks, B.S. Auburn Univ.; M. Eng. Univ. of Michigan

Donnie provided engineering support in the UT GeoFluids lab from 2011 to 2013. He is currently managing the Rock Mechanics Laboratory in the Bureau of Economic Geology at the University of Texas.

caseyBrendan Casey, PhD, MIT

Brendan studied geotechnical engineering at MIT. He completed his PhD in 2014. Brendan’s research focused on high stress one-dimensional consolidation and undrained shear behavior of cohesive soil.

MIT SM Thesis: The significance of specimen end restraint in high pressure triaxial testing of cohesive soil

MIT PhD Thesis: The Consolidation and Strength Behavior of Mechanically Compressed Fine-Grained Sediments (defense ppt)

CroninMichael Cronin
M.S., UT Austin

Michael studied core-scale gas transport experiments and the numerical modeling of gas transport in fractured gas shales. His interests included geomechanics, reservoir engineering, unconventional resource plays, and rowing. He completed his degree in December 2014 and accepted a full-time geologist position with Anadarko Petroleum Corporation in The Woodlands, TX.

UT Thesis: Core-scale heterogeneity and dual-permeability pore structure in the Barnett Shale

day-stirratRuarri Day-Stirrat

Ruarri is interested in mudstone diagenesis, fabric anisotropy and physical properties. He joined Shell following his work with UT GeoFluids

brian fahyBrian Fahy, S.M., MIT

Brian studied Geotechnical Engineering at MIT. He completed his S.M in 2014. He spent 5 years working with a civil engineering contractor specialising in the construction of microtunnels and caissons.

MIT Thesis: The influence of salinity on the mechanical behavior of high plasticity soils

horanAiden Horan, S.M., MIT

Aiden studied Geotechnical Engineering at MIT. He studied the effect of salt concentration on the compressibility of soils such as Gulf of Mexico mudrock and Boston Blue Clay. This work helped develop a geomechanical model for mudrocks that will better allow us to predict compaction behavior, pore pressure, and borehole stability at geologic stresses.

MIT Thesis: The mechanical Behavior of Normally Consolidated Soils as a function of Pore Fluid Salinity

johnsonSean Michael Johnson, S.M., MIT

Sean Johnson studied geotechnical engineering at the Massachusetts Institute of Technology His research interest included Wave Propagation through Bender Element agitation using Ticino Sand.

MIT Thesis: Modeling a bender element test using Abaqus Finite Element Program

luoGang Luo

Gang Luo's primary research interest was computational geodynamics and finite element modeling on stress within and around salt, fluid flow, fault interactions, earthquake stress triggering, crustal/lithospheric stress and strain evolution during earthquake cycles. He became a professor at School of Earth Sciences, University of Chinese Academy of Sciences in Beijing, and a professor in Key Laboratory of Computational Geodynamics, Chinese Academy of Sciences following his work with UT.

marjanovicJana Marjanovic, PhD, MIT

Jana majored in Geotechnical Engineering. With UT GeoFluids she conducted research in the use of Bender Elements to propagate waves through soil specimens and accurately determine the soil's properties under different confining stresses.

MIT Thesis: The study of shear and logitudinal velocity measurements of sands and cohesive soils

michael merrellMichael Merrell, M.S., UT Austin

Michael's research focused on characterizing the pressure and stress at the Mad Dog field that lies directly below an allochthonous salt sheet along the Sigsbee Escarpment in deepwater Gulf of Mexico. He used logging data, direct pressure measurements, and drilling records to understand how the reservoir is segmented and how to predict pore pressure across the field. Upon completion of his M.S., he joined Conocophillips in Houston, TX.

UT Thesis: Pressure and Stress at Mad Dog Field, Gulf of Mexico
Highlights Slide Deck

heather nelsonHeather Nelson

Heather served as the database manager from 1998-2008 and helped the original Penn State GeoFluids team transition to the University of Texas. Although she didn't move with the team to Austin, she still occasionally consults when a major software upgrade is required.

jessica parkerJessica Parker

Jessica contributed to UT GeoFluids during her time as an undergraduate in the MIT Soils Lab under Dr. Germaine. Using Jana's Bender Element technique, she is studied the acoustic wave transmission rates of sand specimens.

sawyerDerek Sawyer, PhD, UT Austin

Derek studied sedimentation, deformation, and fluid flow on continental margins. Upon completion of his PhD, Derek, joined the Operations Geology group of ExxonMobil in Houston, Texas.

UT Thesis: Failure Mechanics, Transport Behavior, and Morphology of Submarine Landslides

Jason SanfordJason Sanford
Graduate Student seeking MS, UT Austin

Jason C. Sanford is an M.S. recipient at the Jackson School of Geosciences at the University of Texas at Austin. His M.S. work focused on the geologic record of the Chicxulub asteroid impact in the Gulf of Mexico (with the Gulf Basin Depositional Synthesis Project) and the geomechanics of reservoir-scale sand injectites in the Panoche Hills of central California (with UT GeoFluids). Jason now works at Chevron as an exploration earth scientist in the deepwater Gulf of Mexico. Jason obtained his B.A. in geology and Spanish at Middlebury College and is a native of Dallas, Texas.

UT Thesis:

Julia SchneiderJulia Schneider Reece, PhD, UT Austin

Julia's research focused on compression and flow behavior of mudrocks. As a PhD student and postdoctoral fellow in the UT GeoFluids group, she studied the effect of mineralogy and particle size on porosity, compressibility, permeability, and microstructure under geologic stresses. She used various mudrocks such as the Boston Blue Clay, Gulf of Mexico mudrock, and Nankai mudrock. Her work has implications in e.g. pore pressure predictions, seal capacity, and tight gas shales. Julia earned her Ph.D. in Geosciences from The University of Texas in 2011. Upon completion of her postdoctoral fellow position at UT in February 2013, she joined the Department of Geophysics at Stanford University as a postdoctoral researcher.

UT Thesis: Compression and permeability behavior of natural mudstones

Andrew Smith, M.S., UT Austin

smithAndrew's work focused on the process of venting and associated hydrate formation at deepwater vents in the Gulf of Mexico. After completing his MS, he joined the marine geology and geophysics research group at the University of Tromsø in Norway as a Fulbright scholar.

UT Thesis: Observations and Models of Venting at Deepwater Gulf of Mexico Vents
Highlights Slide Deck

strongHilary Strong, M.S.

Hilary's thesis focused on consolidation characteristics of mass transport complexes in the Ursa Region. Upon completion of her MS, she joined ExxonMobil as an Operations Geologist.

UT Thesis: The Origin and Properties of Mass Transport Deposits Ursa Basin, Gulf of Mexico

youYao You,PhD, UT Austin

Yao's work focused on quantitative modeling of crustal fluids and geomorphology. He studied failure in sand caused by breaching in subaqueous and submarine environments, and modeled the pore pressure in Ursa Basin using soil properties measured by the UT GeoFluids group. After completing his PhD, Yao joined Hess.

UT PhD Thesis: Dynamics of dilative slope failure