Numerical model illustrating flow focusingUT GeoFluids is managed by University of Texas (Institute for Geophysics) and is currently supported by 11 energy companies at a cost of ~ $50,000/year. The 10-year effort ends in 2019. 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 thrust belts and in the sub-salt.

We produce innovative concepts and analysis work flows that couple geology and fluid flow to predict pore pressure and stress in the subsurface. We have 1) developed on-line software that predicts reservoir pressure, 2) released data bases and material models that describe mudrock material behavior, and 3) developed workflows to predict stress in salt systems and thrust belts.

In the next 2 years, we will demonstrate the effectiveness of our new pore pressure and fracture gradient (PPFG) predictions. We will work with our sponsors to design blind tests based on new datasets(s). We will focus on transferring specific workflows that the sponsors can use in their PPFG efforts. Finally, we will continue the fundamental modeling and experimental work that underpins UT GeoFluids.

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

Logos of current members

2019 Meeting
Our 2019 Meeting will be held Feb 20-22, 2019. Agenda, Speaker, Registration, and Hotel Information are available at 2019 Annual Meeting.

January 8-12, 2019: UT GeoFluids personnel gathered in Marble Falls, TX, for the annual GeoFluids workshop. The students and researchers worked on presentations, posters, and the workshop for the upcoming 2019 UT GeoFluids Consortium Meeting.

December 1-9, 2018: Maria Nikolinakou visited PetroBras in Rio de Janeiro, Brazil.

November 15, 2018; Barcelona: Jean Joseph d’Hooghvorst gave a talk at the Universitat Autònoma de Barcelona about geomechanical modeling of salt basins. The talk was hosted by SEM-CAT.

September 17, 2018: Maria Nikolinakou visited George Washington University, D.C., and presented at the CEE department seminar.

Sept. 12, 2018: Philip Heppard and Michael Merrell from ConocoPhillips visited GeoFluids to discuss a project to predict pore pressure during unloading in unconventional basins

July 18, 2018: Baiyuan Gao successfully defended her doctoral thesis entitled ’Stress, Porosity, and Pore Pressure in Fold-and-Thrust Belt Systems’

July 9-10, 2018: Peter Flemings visited Repsol in Madrid, Spain

June 5, 2018: Shell hosted 'GeoFluids 2020: the next decade' where Peter Flemings, Jack Germaine, and Maria Nikolinakou presented the GeoFluids research proposal for the next ten years.

May 15-16, 2018: Peter Flemings and Maria Nikolinakou visited Pemex at Ciudad de Carmen, MX

View all UT GeoFluids publications on the publications page
Members can access copies of publications at the Member Area Publication Site

2019
Gao B., Flemings P. B., Nikolinakou M. A., Saffer D. M. 2019 (in submission): Dramatic fluid overpressuring and megathrust weakening initiate at the trench; Nature Geoscience Member only link

Nikolinakou M.A., Heidari M., Hudec M.R., Flemings P.B. 2019 (in submission): Stress and deformation in plastic mudrocks overturning in front of advancing salt sheets; implications for system kinematics and drilling; Rock Mechanics and Rock Engineering Member only link

Pinkston F.W.M., Flemings P.B. 2019 (in review): Macondo well pore pressure regression and implications for the Deepwater Horizon blowout; Scientific Reports Member only link

2018
Day-Stirrat R.J., Bryndzia L.T., Schleicher A.M., Adriaens R., Hofmann R., Flemings P.B. 2018: Hydration behavior by X-ray diffraction profile fitting of smectite-bearing minerals in a Plio-Pleistocene mudrock from Eugene Island, Gulf of Mexico; Marine and Petroleum Geology; https://dx.doi.org/10.1016/j.marpetgeo.2018.12.008

Nikolinakou M.A., Flemings P.B., Heidari M., Hudec M.R. 2018: Stress and pore pressure in mudrocks bounding salt systems; Rock Mechanics Rock Engineering; http://dx.doi.org/10.1007/s00603-018-1540-z

Heidari, M., Nikolinakou, M.A., Flemings P.B., 2018. Coupling geomechanical modeling with seismic pressure prediction. Geophysics; http://dx.doi.org/10.1190/geo2017-0359.1

Gao, B., Flemings, P., Nikolinakou, M., Saffer, D., Heidari, M., 2018. Mechanics of Fold-and-Thrust Belts Based on Geomechanical Modeling. Journal of Geophysical Research, http://dx.doi.org/10.1029/2018JB015434

Nikolinakou M.A., Heidari M., Flemings P.B., Hudec M.R., 2018. Geomechanical modeling of pore pressure in evolving salt systems, Marine and Petroleum Geology, http://dx.doi.org/10.1016/j.marpetgeo.2018.03.013