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Rajesh J. Pawar

Email
Phone (505) 665-6929

Capabilities

  • Computational Physics and Applied Mathematics
  • Subsurface flow simulation
  • Multiscale-multiphase-multicomponent subsurface reactive flows
  • Uncertainty quantification
  • Uncertainty analysis
  • Complex system evolutions
  • Earth and Space Sciences
  • Subsurface flow and transport
  • Hydrology

Expertise

Chemical Engineering

Porous media fluid flow simulations

Conventional and Unconventional oil and gas reservoir engineering and simulations

Oil shale conversion and production

Cabron Capture and Storage

Geologic CO2 Sequestration

Multi-phase fluid flow through fractured rocks

Education

Ph.D. Chemical & Fuels Engineering                                                                     1998

University of Utah, Salt Lake City, UT

 

M.S. Chemical & Fuels Engineering                                                                        1995

University of Utah, Salt Lake City, UT

 

B.E. Chemical Engineering                                                                                        1989

Birla Institute of Technology and Science, Pilani, India

 

 

LANL Positions

  • Senior Scientist (Scientist 4), Computational Earth Sciences, EES-16, 7/2010 - Present
  • Scientist (Scientist 3), Computational Earth Science, EES-16, 7/2006 - 6/ 2010
  • Technical Staff Member, Earth & Environmental Sciences Division, 7/2000 - 6/2006
  • Postodoctoral Research Fellow, Earth & Environmental Sciences Division, 7/1997 - 6/2000  
 

Professional Societies

 

 

Awards

  • Secretary of Energy’s Achievement Award for Exceptional Service, 2011.
  • USGS Director’s Award for Exemplary Service to the Nation, 2010.
 

Publications

  • Pawar, R.J., Bromhal, G., Carey, W., Foxall, W., Korre, A., Ringrose, P., Tucker, O., Watson, W., White, J., 2015, Recent advances in risk assessment and risk management of geologic CO2 storage, International Journal of Greenhouse Gas Control, 40, 292-311, 2015.  
  • Dempsey, D., O’Malley, D., Pawar, R., Reducing uncertainty associated with CO2 injection and brine production in heterogeneous formations, International Journal of Greenhouse Gas Control, 37, 24-37, 2015.
  • Sullivan, E.J., Chu, S., Pawar, R., Probabilistic cost estimation methods for treatment of water extracted during CO2 storage and EOR, International Journal of Greenhouse Gas Control, 41, 316-327, 2015.
  • Porter, M., Pawar, R., Plampin, M., Illangasekare, T., CO2 leakage in shallow aquifers: A benchmark modeling study of CO2 gas evolution in heterogeneous porous media, International Journal of Greenhouse Gas Control, 39, 51-61, 2015.
  • Chen, L., Kang, Q., Pawar, R., He, Y., Tao, W., Pore-scale prediction of transport properties in reconstructed nanostructures of organic matter in shales, Fuels, 158, 650-658, 2015.
  • A. Jordan, P. Stauffer, B. Carey, D. Harp, R. Pawar, A Response Surface Model to Predict CO2 and Brine Leakage along Cemented Wellbores, International Journal of Greenhouse Gas Control, 33, 27-39, 2015.
  • Plampin, M., Lassen, R., Sakaki, T., Porter, M., Pawar, R., Jensen, K., and Illangasekare, T.,  Heterogeneity-Enhanced Gas Phase Formation in Shallow Aquifers during Leakage of CO2-Saturated Water from Geologic Sequestration Sites, Water Resources Research, 50, 9251-9266, 2015.
  • Kelkar, S.; Lewis, K.; Karra, S.; Zyvoloski, G.; Rapaka, S.; Viswanathan, H.; Mishra, P. K.; Chu, S.; Coblentz, D.; Pawar, R., A simulator for modeling coupled thermo-hydro-mechanical processes in subsurface geological media, International Journal of Rock Mechanics and Mining Sciences, Sept, 2014, Vol.70, p.569(12)
  • Dempsey, D., Kelkar, S., Pawar, R., Keating E., Coblentz, Modeling caprock bending stresses and their potential for induced seismicity during CO2 injection, International Journal of Greenhouse Gas Control, 22, 223-236, 2014.
  • Keating, E., Dempsey, D., Pawar, R., Insights into interconnections between the shallow and deep systems from a natural CO2 reservoir near Springerville, Arizona, International Journal of Greenhouse Gas Control,  25, 162-172, 2014.
  • Dempsey, D., Kelkar, S., Pawar, R., Passive injection: A strategy for mitigating reservoir pressurization, induced seismicity and brine migration in geologic CO2 storage, International Journal of Greenhouse Gas Control, 28, 96-113, 2014.
  • Plampin, M., Illangasekhare, T., Sakaki, T., Pawar, R., Experimental study of gas evolution in heterogeneous shallow subsurface formations during leakage of stored CO2, International Journal of Greenhouse Gas Control, 22, 47-62, 2014.
  • Dai Z., Middleton, R., Viswanathan, H., Fessenden-Rahn, J., Bauman, J., Pawar, R., Lee, S., McPherson, B., An integrated framework for optimizing CO2 sequestration and enhanced oil recovery, Environmental Science and Technology Letters, 1(1), 49-54, 2014.
  • Dai, Z., Keating, E., Bacon, D., Viswanathan, H., Stauffer, P., Jordan, A., Pawar, R., Probabilistic evaluation of shallow groundwater resource at a hypothetical CO2 sequestration site, Nature Scientific Reports, Vol 4, 2014.
  • Sakaki, T., Plampin, M. R., Pawar, R., Komatsu, M., Illangasekare, T. H., What controls carbon dioxide gas phase evolution in the subsurface?   ~ Experimental observations in a 4.5m-long column under different heterogeneity conditions, International Journal of Greenhouse Gas Control, pp. 66-77, doi:10.1016/j.ijggc.2013.03.025, 2013.
  • Keating, E., Hakala, J., Viswanathan, H., Carey, J., Pawar, R., Guthrie, G., Fessenden-Rahn, J., CO2 leakage impacts on shallow groundwater: Field-scale reactive transport simulations informed by observations at a natural analog site, Applied Geochemistry, 30, 136-147, 2013.
  • Keating, E., Newell, D., Viswanathan, H., Carey, J., Zyvoloski, G., Pawar, R., CO2/brine transport into shallow aquifer along fault zones, Environmental Science & Technology, 47 (1), 290-297, 2013.
  • Sullivan, E. J., Chu, S., Stauffer, P., Middleton, R., Pawar, R., A method and cost model for treatment of water extracted during geologic CO2 sequestration, International Journal of Greenhouse Gas Control, 12, 372-381, 2013.
  • Viswanathan, H. S., Dai, Z. X., Lopano, C., Keating, E., Hakala, J. A., Schekel, K. G., Zheng, L., Guthrie, G. D., Pawar, R., Developing a robust geochemical and reactive transport model to evaluate possible sources of arsenic at the CO2 sequestration analog site in Chimayo, New Mexico, International Journal of Greenhouse Gas Control, 10, 199-214, 2012.
  • Sullivan, E. J., Chu, S., Pawar, R., Stauffer, P., A CO2-PENS model of methods and costs for treatment of water extracted during geologic carbon sequestration, Desalination and Water Treatment, DOI:10.1080/19443994.2012.714727.
  • Keating, E. H., Newell, D. N., Viswanathan, H. S., Carey, J. W., Zyvoloski, G., Pawar, R., CO2/Brine Transport into Shallow Aquifers along Fault Zones, Environmental Science and Technology, 2012 Jul 30. http://dx.doi.org/10.1021/es301495x.
  • Keating, E., Hakala, J. A., Viswanathan, H., Carey, J. W., Pawar, R., Guthrie, G., Fessenden-Rahn, J., CO2 leakage impacts on shallow groundwater: Field-scale reactive-transport simulations informed by observations at a natural analog site, Applied Geochemistry, 2012.  23 Aug   http://dx.doi.org/10.1016/j.apgeochem.2012.08.007.
  • Middleton, R. S., Kuby, M. J., Wei, R., Keating, G. N., Pawar, R. J., A dynamic model for optimally phasing in CO2 capture and storage infrastructure, Environmental Modeling and Software, 37, 193-205, 2012.
  • Middleton, R. S., Keating, G. N., Viswanathan, H. S., Stauffer, P. H., Pawar, R. J., Effect of geologic reservoir uncertainty on CO2 transport and storage infrastructure, International Journal of Greenhouse Gas Control, 8, 132-142, 2012.
  • Keating, G.N., Middleton, R. S., Stauffer, P. H., Viswanathan, H. S., Letellier, B. C., Pasqualini, D., Pawar, R. J., Wolfsberg, A. V., Mesoscale carbon sequestration site screening and CCS infrastructure analysis, Environmental Science and Technology, Vol.45, iss.1, 215-222, 2011.
  • Middleton, R. S., Bielicki, J. M., Keating, G. N., Pawar, R. J.,  Jump starting CCS using refinery CO2 for enhanced oil recovery, Energy Procedia, 4, 2185-2191, 2011.
  • Stauffer, P. H., Pawar, R. J., Surdam, R. C., Jiao, Z., Deng, H., Application of the CO2-PENS risk analysis tool to the Rock Springs Uplift, Wyoming, Energy Procedia,  4, 4084-4091, 2011.
  • Keating, G. N, Middleton, R. S., Viswanathan, H. S., Stauffer, P. H. and Pawar, R. J., How Storage Uncertainty Will Drive CCS Infrastructure, Energy Procedia, 4, 2393-2400, 2011.
  • Stauffer, P. H., Keating G. N., Middleton, R. S., Viswanathan, H. S., Berchtold, K. A., Singh, R. P., Pawar, R. J., Mancino, A., Greening Coal: Breakthroughs and Challenges in Carbon Capture and Storage, Environmental Science & Technology, 45 (20), 8597-8604, 2011.
  • Keating E. H., Fessenden, J., Kanjorsky, N., Koning, D., Pawar, R., The impact of CO2 on shallow groundwater chemistry: observations at a natural analog site and implications for carbon sequestration, Environmental Earth Sciences, Vol.60, iss.3, p.521-536, 2010.
  • Sullivan, E. J., Pawar, R., Stauffer, P., Produced water chemistry, treatment models, and use in algal biofuel production and carbon capture and sequestration; or How produced water is like Champagne, Geochimica et Cosmochimica Acta, 74 (12), Suppl 1, 1005, 2010.
  • Person, M., Banerjee, A., Rupp, J., Medina, C., Lichtner, P., Gable, C., Pawar, R., Celia, M., McIntosh, J., Bense, V., Assessment of basin-scale hydrologic impacts of CO2 sequestration, Illinois basin, International Journal of Greenhouse Gas Control, 4 (5), 840-854, 2010.
  • Rapaka, S., Pawar, R. J., Stauffer, P. H., Zhang, D. X., Chen, S. Y., Onset of convection over a transient base-state in anisotropic and layered porous media, Journal of Fluid Mechanics, 641, 227-244, doi:10.1017/S0022112009991479, 2009.
  • Class H., Ebigbo, A., Rainer, H., Dahle, H., Nordbotten, J. M., Celia, M. A., Audigane, P., Darcis, M., Ennis-King, J., Fan, Y., Flemisch, B., Gasda, S., Jin, M., Krug, S., Labregere, D., Naderi, A., Pawar, R. J., Sbai, A., Thomas, S. G., and Trenty, L., A benchmark-study on problems related to CO2 storage in geologic formations, Computational Geosciences, 13 (4), 409-434, 2009.
  • Pawar, R. J., Watson, T. L. and Gable, C. W., Numerical Simulation of CO2 Leakage through Abandoned Wells: Model for an Abandoned Site with Observed Gas Migration in Alberta, Canada, Energy Procedia, 1 (1), 3625-3632, 2009.
  • Stauffer, P.H., Viswanathan, H.S, Pawar, R.J. and Guthrie, G.D., A system model for geologic sequestration of carbon dioxide.  Environmental Science & Technology, 43 (3), 565-570, 2009.
  • Newell, D. L., Kaszuba, J. P., Viswanathan, H. S., Pawar, R. J., and Carpenter, T., Significance of carbonate buffers in natural waters reacting with supercritical CO2: Implications for monitoring, measuring and verification (MMV) of geologic carbon sequestration, Geophysics Research Letters, 35 (23), L23403, doi:10.1029/2008GL035615, 2008.
  • Viswanathan, H.S., Pawar, R.J. , Stauffer, P. H. , Kaszuba, J.P. , Carey, J.W. , Olsen, S.C. , Keating, G.N., Kavestski, D. and Guthrie, G.D. , Development of a hybrid process and system model for the assessment of wellbore leakage at a geologic CO2 sequestration site, Environmental Science and Technology, 42, 7280-7286, 2008.
  • Rapaka, S., Chen, S., Pawar, R. J., Stauffer, P. H., Zhang, D. , Non-modal growth of perturbations in density-driven convection in porous media, Journal of Fluid Mechanics, 609, 285-303, doi:10.1017/S0022112008002607, 2008.
  • Carey, J. W., Wigand, M., Chipera, S. J., WoldeGabriel, G., Pawar, R., Lichtner, P. C., Wehner, S. C., Raines, M. A., and Guthrie, G. D., Analysis and performance of oil well cement with 30 years of CO2 exposure from SACROC unit, west Texas, USA, International Journal of Greenhouse Gas Control, Vol. 1, No. 1, pp 75-85, 2007.
  • Pawar, R. J, Warpinski N. R., Lorenz. J. C., Benson, R.D., Grigg, R.B., Stubbs, B.A., Krumhansl, J. P. and Stauffer, P. H., Overview of a CO2 sequestration field-test in the West Pearl Queen reservoir, New Mexico, Env. Geosciences, 13, 163-180, 2006.
  • Pawar, R.J. , Edwards, E.B.,  and Whitney, E.M., Geostatistical characterization of the Carpinteria Field, California, Book Chapter, Soft Computing and Intelligent Data Analysis in Oil Exploration, M. Nikravesh, F. Aminzadeh, L. A. Zadeh eds., Elsevier, 2001.