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Florian LEHNER, Dipl.-Ing., PhD., Hon. Prof.


Office address:
Geography and Geology
University of Salzburg
Hellbrunnerstraße 34
A-5020 Salzburg

Research interests and work in progress:

Mechanics and chemomechanics of porous media.
Stress-induced seismic time-lapse phenomena around depleting reservoirs.
Formation of bending joints in multi-layer sequences.
Modelling of structures caused by (salt) substratum mobility (SaltTecDEM).

Positions held:

Since 2013: Scientific Advisor and Research Collaborator, Department for Geodynamics and Sedimentology, University of Vienna.
Since 1996: Lecturer and Honorary Professor of Geology, University of Salzburg, Austria. Visiting Professorships: University of Bonn (1996/97), École Polytechnique Palaiseau (1997/98), École Normale Supérieure, Paris (2001), Kyoto University Graduate School (2002).
1985-1996: Shell Research, Section head Geomechanics, Rijswijk & Amsterdam, The Netherlands.
1979-1984:  Asst. Prof., Engineering, Brown University, USA.
1963-1975: Shell Research, Reservoir Engg. & Struct. Geology/Geomechanics, Rijswijk, The Netherlands.


Selected Publications 

Lehner, F.K.   Étude experimentale et théorique du balayage dans les déplacements instable de l'huile par l'eau. Rev, Inst. Français du Pétrole 26, 891-903, 1971.

Lehner, F.K. and A.S. Williamson. Gas blow-out control by water injection through relief wells: a theoretical analysis.  SPE Jrl., 321-329, August 1974.

Weber, K.J., G. Mandl, W.F. Pilaar, F.K. Lehner, and R.G. Precious. The role of faults in hydrocarbon migration and trapping in Nigerian growth fault structures. Proc. 10th Annual Offshore Technology Conference, Houston, Texas, 4, 2643-2653, May 8-11, 1978.

Lehner, F.K.   A derivation of the field equations for slow viscous flow through a porous medium. Ind. Eng. Chem. Fundam. 18/1, 41-45, 1979.

Lehner, F.K.   On the validity of Fick's Law for transient diffusion through a porous medium. Chem. Eng. Sci., 34, 821-825, 1979.

Lehner, F.K., V.C. Li, and J.R. Rice.  Stress diffusion along rupturing plate boundaries. J. Geophys. Res. 86/B7, 6155-6169, 1981.

Lehner, F.K. and V.C. Li.  Large-scale characteristics of plate boundary deformations related to post-seismic readjustment of a thin asthenosphere. Geophys. J. r. astr. Soc. 71, 775-792, 1982.

Lehner, F.K. and J. Bataille.  Nonequilibrium thermodynamics of pressure solution. PAGEOPH 122, 53-85, 1984/85.

Heidug, W. and F.K. Lehner. Thermodynamics of coherent phase transformations in nonhydrostatically stressed solids. PAGEOPH 123, 91-98, 1985.

Lehner, F.K.   Comments on `Noncohesive Critical Coulomb Wedges: An Exact Solution' by F.A. Dahlen. J. Geophys. Res. 91/B1, 793-797, 1986.

Lehner, F.K. Plane potential flows past doubly periodic arrays and their  con- nection with effective transport properties. J. Fluid Mechanics, 162, 35-51, 1986.

Lehner, F.K.   Critical water-free production rates and gravity drainage rates for multi-well systems. SPE Reservoir Engineering, 363-370, July 1986.

Lehner, F.K., D. Marsal, L. Hermans, and A. van Kuyk. A model of secondary hydrocarbon migration as a buoyancy-driven separate phase flow. Rev. Inst. Français du Pétrole 43/2, 155-164, 1988.

Lehner, F.K.   Thermodynamics of rock deformation by pressure solution. In: Barber D.J. and P.G. Meredith (eds.), “Deformation Processes in Minerals, Ceramics and Rocks", Chapter 11, 296--333,  Unwin Hyman, London, 1990.

Lehner, F.K.  Pore-pressure-induced fracturing of petroleum source rocks. Implications  for primary migration. In: Imisario, G., M. Frias, and J. M. Bemtgen (eds.), “The European Oil and Gas Conference - A Multidisciplinary Approach in Exploration and Production R&D", Proceedings of the Conference held in Altavilla Milicia (Palermo, Sicily, Italy), 9-12 Oct. 1990, 131-141. Graham & Trotman Ltd., London, 1991.

Triantafyllidis, N. and F.K. Lehner. Interfacial instability of density-stratified two-layer systems under initial stress. J. Mech. Phys. Solids 41/1, 117-142, 1993.

Lehner, F.K.   A model for intergranular pressure solution in open systems. Tectonophysics 245, 153-170, 1995.

Lehner, F.K. and M.L. Kachanov. On modelling “winged” cracks forming under compression. Int. J. Fracture 77, R69-R75, 1996.

Lehner, F.K. and W.F. Pilaar. The emplacement of clay smears in synsedimentary normal faults. Inferences from field observations near Frechen, Germany. In:  “Hydrocarbon Seals - Importance for Exploration and Production”, P. Pedersen and A.G. Koestler (eds.), NPF (Norwegian Petroleum Society), Special Publication No. 7, Elsevier, Amsterdam etc., 1997.

Lehner, F.K.   An approximate theory of substratum creep and contemporaneous overburden deformation in salt basins and deltas. In: “Aspects of Tectonic Faulting” - Georg Mandl Festschrift, F.K. Lehner & J.L. Urai (eds.), Springer-Verlag, Berlin Heidelberg, 2000.

Lehner, F.K.  and Y.M. Leroy.  Sandstone compaction by intergranular pressure solution. In: “Mechanics of Fluid-Saturated Rocks", Y. Guéguen and M. Boutéca (eds.), Chap. 3, pp. 115-168, Elsevier - Academic Press, Amsterdam etc., 2004.

Lehner, F.K., J.K. Knoglinger, and F.D. Fischer. Use of a Maysel integral representation for solving poroelastic inclusion problems.  In: “Thermal Stresses 2005", F. Ziegler, R. Heuer, and C.  Adam (eds.), Proceedings of 6th International Congress on Thermal Stresses, pp. 77-80, Vienna, Austria, May 26-29, 2005.

Lehner, F.K. Chemomechanics and Diagenesis - Pressure Solution as Example. Z. geol. Wiss. 37, 261-275, 2009. 

Lehner, F.K.  The Linear Theory of Anisotropic Poroelastic Solids. In: ``Mechanics of Crustal Rocks", Y.M. Leroy and F.K. Lehner (eds.), CISM Courses and Lectures - No. 533, pp. 1-41, Springer-Verlag, Wien New York, 2011.

Edited Volumes

F.K. Lehner and J.L. Urai (eds.), “Aspects of Tectonic Faulting - Georg Mandl Festschrift”, Springer-Verlag, Berlin Heidelberg, 2000.

Y.M. Leroy and F.K. Lehner (eds.), “Mechanics of Crustal Rocks”, CISM Courses and Lectures - No. 533, 239 pp., Springer-Verlag, Wien New York, 2011.


Honours and Awards:

Doctor Honoris Causa, Université de Cergy Pontoise, France (2011).
Honorary Professor, General Geology and Tectonics, University of Salzburg (1996).
Scientific award of the Austrian Society for Petroleum Sciences (1979).

Department for Geodynamics and Sedimentology
University of Vienna

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