Numerical model illustrating flow focusingUT GeoFluids is managed by the University of Texas Institute for Geophysics (UTIG) and is currently supported by 10 energy companies at a cost of ~ $50,000/year. We are at the start of a 10-year effort entitled GeoFluids2020. Our results are used to predict pressure and stress, design stable and safe drilling programs, and predict hydrocarbon migration and entrapment. We study the state and evolution of pressure, stress, deformation and fluid flow through experiments, models, and field study:

  1. Experimental: We analyze fabric, acoustic, electrical, and material properties of mudrocks : 0.1-100 MPa.
  2. Poromechanical Modeling: We develop and apply coupled models to link realistic rheologies, deformation, stress (shear and normal), and pore pressure.
  3. Field Study: We analyze pore pressure, stress, and deformation in both conventional and unconventional basins.

We produce innovative concepts and analysis workflows that couple geology and geomechanics to predict and interpret pore pressure and stress in the subsurface. We have

  • developed online software that predicts reservoir pressure,
  • released databases and material models that describe mudrock material behavior, and
  • developed workflows to predict stress in salt systems and thrust belts.

Our new research aims to develop a unified approach that incorporates stress dependency, creep, mineralogical transformation, and loading path to illuminate the state and evolution of pressure and stress in basins. We are applying this approach to develop two and three-dimensional whole earth models that improve well design, real-time drilling, borehole stability, reservoir simulation and seismic imaging.

Click here for more details about the Consortium, or contact the Consortium Co-Directors, Dr. Peter Flemings and Dr. Jack Germaine.

Thank you!

Thank you for attending (in person and virtually) the 2022 UT GeoFluids meeting. We were thrilled with the discussions and the interactions. Talks have been uploaded and are available to UT GeoFluids members here. For more details see UT GeoFluids Meetings.

The 13th UT GeoFluids took place April 6 — April 8, 2022, in Austin, Texas. The hybrid (in person/virtual) program featured a reception and poster session, industry talks, hands-on workshop, and a group dinner. Thank you everyone who participated!

Congratulations to grad student Landon Lockhart on receiving a scholarship from the East Texas Communities Foundation!

Peter Flemings leads workshop on trap integrity at Chevron: In his first onsite visit since the pandemic began, Peter led a workshop on March 1 to teach a systematic approach to predict column height by both capillary sealing and mechanical integrity.

Maria Nikolinakou visited Northwestern University and gave the departmental seminar discussing "What can passive failure and critical state soil mechanics tell us about earthquakes?

Grad Student Publishes Paper on Fracture Gradient: The paper published in Petroleum Geoscience, takes Mark Zablocki, a doctoral student at Tufts, a step closer to his summer 2022 graduation! UT GeoFluids members may download the paper in full (PDF) from the UT GeoFluids Member Area.

Sebastian Ramiro-Ramirez Defends PhD Project: Congratulations to Sebastian who successfully defended his doctoral degree thesis, titled 'Integrated Stratigraphic And Petrophysical Analysis Of The Wolfcamp At Delaware Basin'.

AAPG Europe: Maria Nikolinakou delivered an invited keynote talk: “How do transient geomechanical models illuminate pressure and stress in mudrocks bounding salt structures?” at the AAPG Europe - Evaporite processes and systems: Integrating perspectives conference held virtually on October 18-20, 2021.

View all UT GeoFluids publications on the publications page
Members can access copies of publications at the Member Area Publication Site
If you don't know your password please contact Felicia Garcia-Hildenbrand.

Meazell, K.P., Flemings, P.B, 2022, The evolution of seafloor venting from hydrate-sealed gas reservoirs. Earth and Planetary Science Letters,

Zablocki, M., Germaine, J.T., Plumb, R., Flemings, P.B., 2022, The impact of clay fraction on the strength and stress ratio (K0) in Gulf of Mexico mudrocks and quartz silt mixtures: implications for borehole stability and fracture gradient. Petroleum Geoscience;

Hooghvorst, JJ, Nikolinakou, MA, Harrold, TWD, Fernandez, O, Flemings, PB, Marcuello, A., 2021, Geologically constrained evolutionary geomechanical modelling of diapir and basin evolution: A case study from the Tarfaya basin, West African coast. Basin Research.

Heidari, M., Nikolinakou, M. A., Hudec, M.R., and Flemings, P. B., 2021, Impacts of vertical salt welding on pore pressure, stresses, and deformation near the weld. Marine and Petroleum Geology

Flemings, P.B, 2021, A Concise Guide to Geopressure: Origin, Prediction, and Applications, Cambridge University Press. Purchase

UT GeoFluids produces innovative concepts and analysis workflows that couple geologic loading and fluid flow to predict pore pressure and stress in the subsurface. These include:

  • UT Centroid: online software to predict reservoir pressure as a function of reservoir geometry and mudstone permeability.
  • Seismic Pressure Prediction Integrated with Geomechanical Modeling: a highly innovative workflow integrating seismic velocity data with geomechanical modeling to predict pressure and the full stress tensor.
  • UT-FAST-P3: An online, educational tool allowing users to predict and compare pore pressure using the full stress tensor while demonstrating why it is important to go beyond vertical effective stress (VES) models.

Learn more.