Tianfu Xu
Scientist

Hydrogeology Department

Phone: 510-486-7057
Fax: 510-486-5686
Email: tianfu_xu@lbl.gov

 
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Tianfu Xu

RECENT PUBLICATIONS

 

Journal Papers and Book Chapters:

  1. Xu, T., E.L. Sonnenthal, N. Spycher, and K. Pruess, TOURGHREACT: A simulation program for non-isothermal multiphase reactive geochemical transport in variably saturated geologic media, Computer & Geoscience, In press, 2005.
  2. Sonnenthal, E., T. Xu, and G. Bodvarsson, Reply to “Commentary: Assessment of past infiltration fluxes through Yucca Mountain on the basis of the secondary mineral record—is it a viable methodology?”, by Y.V. Dublyansky and S.Z. Smirnov, Journal of Contaminant Hydrology, 77(3), 225-231, 2005.
  3. Xu, T., CO2 geological sequestration, China Encyclopedic Knowledge, 307(2), 34-35, 2005.
  4. Xu, T, J. A. Apps, and K. Pruess, Mineral sequestration of carbon dioxide in a sandstone-shale system, Chemical Geochemistry, 217(3-4), 295-318, 2005.
  5. Kim, J., F.W. Schwartz, T. Xu, and J. Shi, Coupled processes of fluid flow, solute transport and geochemical reactions in reactive barriers, Vadose zone Journal, 2004(3), 867-874, 2004.
  6. Xu, T, J. A. Apps, and K. Pruess, Mineral alteration due to injection of CO2, H2S and SO2 in deep arkosic formations, in Water Rock Interaction (WRI-11) edited by Richard B. Wanty & Robert R. Seal, p. 601-605, A.A. Balkema, London, 2004. (A peer-reviewed book chapter)
  7. Xu, T, J. A. Apps, and K. Pruess, Numerical simulation of CO2 disposal by mineral trapping in deep aquifers, Applied Geochemistry, 19, 917-936, 2004.
  8. Xu, T., Y. Ontoy, P. Molling, N. Spycher, M. Parini, and K. Pruess,Reactive transport modeling of injection well scaling and acidizing at Tiwi Field, Philippines, Geothermics, 33(4), 477-491, 2004.
  9. Pruess, K., and T. Xu, Numerical Simulation of Reactive Flow in Hot Aquifers by Christoph Clauser (Ed.), Springer-Verlag, Berlin, Heidelberg, New York, Geothermics, 33, 213-215, 2004.
  10. Todaka, N., C. Akasaka, T. Xu, and K. Pruess, Reactive geothermal transport                            simulations to study the formation mechanism of an impermeable barrier between acidic and neutral fluid zones in the Onikobe Geothermal Field, Japan, Journal of Geophysical Research, v. 109, B05209, doi:10.1029/2003JB002792, 2004.
  11. Pruess, K., J. García, T. Kovscek, C. Oldenburg, J. Rutqvist, C. Steefel, and T. Xu, Code intercomparison builds confidence in numerical simulation models for geologic disposal of CO2, Energy, 29, 1431-1444, 2004.
  12. Kiryukhin, A., T. Xu, K. Pruess, J. Apps and I. Slovtsov, Thermal-hydrodynamic-chemical (THC) modeling based on geothermal field data, Geothermics, 33(3), 349-381, 2004.
  13. Pruess, K., Xu, T., Apps, J., and García, J., Numerical modeling of aquifer disposal of CO2, Paper SPE-83695, SPE Journal, p. 49-60, 2003.
  14. Xu, T, J. A. Apps, and K. Pruess, Reactive geochemical transport simulation to study mineral trapping for CO2 disposal in deep arenaceous formations, Journal of Geophysical Research, Vol. 108 (B2), 2071, doi:10.1029/2002JB001979, 2003.
  15. Xu, T., E. Sonnenthal, and G. Bodvarsson,A reaction-transport model for calcite precipitation and evaluation of infiltration-percolation fluxes in unsaturated fractured rock, Journal of Contaminant Hydrology, 64, 113 - 127, 2003.
  16. Xu, T., and K. Pruess, Modeling multiphase non-isothermal fluid flow and reactive geochemical transport in variably saturated fractured rocks:  1. Methodology, American Journal of Science, 301, 16-33, 2001.
  17. Xu, T., E. Sonnenthal, N. Spycher, K. Pruess, G. Brimhall, and J. Apps, Modeling multiphase non-isothermal fluid flow and reactive geochemical transport in variably saturated fractured rocks:  2. Applications to supergene copper enrichment and hydrothermal flows, American Journal of Science, 301, 34-59, 2001.
  18. Xu, T., and Pruess, K., On fluid flow and mineral alteration in fractured caprock of magmatic hydrothermal systems, Journal of geophysical Research, 106(B2), 2121-2138, 2001.
  19. Xu, T., S. P. White, K. Pruess, and G. H. Brimhall, Modeling of pyrite oxidation in saturated and unsaturated  subsurface flow systems, Transport in porous media, 39, 25-56, 2000.
  20. Xu, T., K. Pruess, and G. Brimhall, Oxidative weathering chemical migration through an unsaturated-saturated medium, Contribution to Chapter 5 of “Vadose Zone Science and Technology Solutions”  book, Edited by Westinghouse Savannah River Company for U. S. Department of Energy, 2000.
  21. Xu, T., K. Pruess, and G. Brimhall. An improved equilibrium-kinetics speciation algorithm for redox reactions in variably saturated flow systems, Computers & Geosciences, 25(6), 655 -666, 1999.
  22. Xu, T., J. Samper, C. Ayora, M. Manzano, and E. Custodio, Modeling of non-isothermal multi-component reactive transport in field-scale porous media flow system, Journal of Hydrology, 214, 144-164, 1999.

Conference Proceedings:

  1. Todaka, N., C. Akasaka, T. Xu, K. Pruess, Reactive geothermal transport simulations to study incomplete neutralization of acid fluid using multiple interacting continua method in Onikobe Geothermal field, Japan, Submitted to Proceedings of World Geothermal Congress 2005, Antalya, Turkey, April 24-29, 2005.
  2. Xu, T, and K. Pruess, Numerical simulation of injectivity effects of mineral scaling and clay swelling in a fractured geothermal reservoir, Proceedings of Geothermal Resources Council 2004 Annual Meeting (Vol 28 of GRC Transactions), Palm Springs, California, August 29-September 1, 2004.
  3. Xu, T, J. A. Apps, and K. Pruess, CO2 sequestration in bedded sandstone-shale sequences, In Proceedings of Underground Injection Science and Technology Symposium, Berkeley, California, October 22-25, 2003.
  4. Xu, T.,  E. Sonnenthal, N. Spycher, K. Pruess, Using TOUGHREACT to model reactive fluid flow and geochemical transport in hydrothermal systems, In Proceedings of Geothermal Resources Council 2003 Annual Meeting, Morelia Mexico, October 12-15, 2003.
  5. Xu, T, J. A. Apps, and K. Pruess, CO2 sequestration in bedded sandstone-shale sequences, In Proceedings of Second Annual Carbon Sequestration Conference, Alexandria, VA 22311, May 5-8, 2003.
  6. Sonnenthal, E., N. Spycher, M. Conrad, T. Xu, Linking reaction, transport, and hydrological parameters in unsaturated fractured rock: TOUGHREACT implementation and application, In proceedings of 2003 TOUGH Workshop, May 12-14, Berkeley, California.
  7. Xu, T.,  E. Sonnenthal, N. Spycher, K. Pruess, TOUGHREACT: A new code of the TOUGH family for non-isothermal multiphase reactive geochemical transport in variability, In proceedings of 2003 TOUGH Workshop, May 12-14, Berkeley, California.
  8. Ontoy, Y., P. Molling, T. Xu, N. Spycher, M. Parini, and K. Pruess, Scaling of hot brine injection wells: Supplementing field studies with reactive transport modeling, In proceedings of 2003 TOUGH Workshop, May 12-14, Berkeley, California.
  9. Todaka, N., C. Akasaka, T. Xu, and K. Pruess, Modeling of geochemical interactions between acidic and neutral fluids in the onikobe geothermal reservoir, In proceedings of 28th Workshop on Geothermal Reservoir Engineering Stanford University, California, January 27-29, 2003.
  10. Kiryukhin, A., T. Xu, K. Pruess, J. Apps and I. Slovtsov.  Thermal-Hydrodynamic-Chemical (THC) Model Calibration Study Based on Geothermal Field Data, presented at Annual Meeting, Geothermal Resources Council, Reno, NV, September 2002.
  11. Kiryukhin, A., T. Xu , K. Pruess , and I. Slovtsov, Modeling of thermal-hydrodynamic-chemical processes: some applications to understanding of active hydrothermal systems, Stanford geothermal workshop, Junuary, 2002.
  12. Xu, T., K. Pruess, and G. Brimhall, Modeling reactive geochemical transport in natural fractured rock systems over geological time, Submitted to 2002 International Groundwater Symposium, March 25-28, Berkeley, Berkeley National Laboratory Report LBNL-49062.
  13. Xu, T., K. Pruess, M. Pham, C. Klein, and S. Sanyal, Reactive chemical transport simulation to study geothermal production with mineral recovery and silica scaling, Paper accepted by Geothermal Resources Council annual meeting, San Diego, California, August 26-29, 2001.
  14. Pruess, K., T. Xu,  J. Apps, and J. García, Numerical modeling of aquifer disposal of CO2, Paper SPE-66537, presented at SPE/EPA/DOE Exploration and Production Environmental Conference, San Antonio, TX, February 2001.
  15. Pham, M., C. Klein, S. Sanyal, T. Xu, and K. Pruess, Reducing cost and environmental impact of geothermal power through modeling of chemical processes in the reservoir, In proceedings of Twenty-Sixth Workshop on Geothermal Reservoir Engineering, Stanford University, California, January 29-31, 2001.
  16. Xu, T., and K. Pruess, Hydrothermal fluid flow and mineral alteration in a fractured rock under multiphase H2O-CO2 mixture conditions, In Proceeding of World Geothermal Congress 2000, Kyushu-Tohoku, Japan, May 28 - June 10, 2000.
  17. Xu, T., K. Pruess, and G. Brimhall, Reactive chemical transport in fractured rock: Supergene copper enrichment, In Proceedings of Dynamics of fluid in fractured rocks, February 10-12, 1999, Lawrence Berkeley National Laboratory, Berkeley, California, 1999.
  18. Xu, T., K. Pruess, and G. Brimhall, Introducing reactive chemical transport to TOUGH2: Application to Supergene copper enrichment, In Proceeding of the TOUGH Workshop ’98, Lawrence Berkeley National Laboratory, Berkeley, California, May 4-6, 1998.
  19. White, S. P., T. Xu, and K. Pruess, Reactive chemical transport, In Proceeding of the TOUGH Workshop ’98, Lawrence Berkeley National Laboratory, Berkeley, California, May 4-6, 1998.
  20. Xu, T, and JAC A. M. van de Gun, Predicting land subsidence with a constant-parameter coupled model for groundwater flow and aquitard compaction: the Markerwaard case, In Proceeding of the Fifth International Symposium on Land Subsidence, The Hague, International Association for Hydrological Science Publication No. 234, p.369-379, 1996.
  21. Xu, T, J. Samper, and C. Ayora, Sequential iteration approaches for modeling multicomponent reactive transport under local equilibrium conditions, The Hague, Proceeding of European Geophysical society 6th congress, 1995.
  22. Samper, J., T. Xu, and C. Ayora, Modeling the coupled thermo-hydro-chemical behaviour of geological barriers, Second workshop on radioactive waste disposal, Spain, p. 313-329, 1995.
  23. Ayora, C., J. Samper, and T. Xu, Reactive solute transport modeling: Problem statement and hydrochemical model, VI Simposium of hydrology, Spain, v. XIX, p. 769-784, 1995.
  24. Samper, J., C. Ayora, T. Xu, and N. Cuéllar, Reactive solute transport modeling: Numerical formulation and computer codes, VI Simposium of hydrology, Spain, v. XIX, p. 785-800, 1995.
  25. Xu, T, C. Ayora, and J. Samper, Reactive solute transport modeling: One dimensional examples, VI Simposium of hydrology, Spain, v. XIX, p. 801-812, 1995.
  26. Xu, T, J. Samper, and C. Ayora, Reactive solute transport modeling: Two-dimensional simulations, VI Simposium of hydrology, Spain, v. XIX, p. 813-828, 1995.

Conference Abstracts:

  1. Xu, T, J. A. Apps, and K. Pruess, Geologic sequestration of CO2 and associated H2S and SO2 in bedded sandstone-shale sequences, American Geophysical Union 2003 Fall Meeting, December 8-12, San Francisco, California, 2003.
  2. Xu, T., and K. Pruess, Vapor diffusion as a mechanism for moisture redistribution in unsaturated flow systems with variable salinity,American Geophysical Union 2001 Fall Meeting, F515, December 10-14, San Francisco, California, 2001.
  3. Xu, T., E. Sonnenthal, and G.. Bodvarsson, Simulation of calcite deposition and percolation at Yucca Mountain, Nevada,American Geophysical Union 1999 Fall Meeting, December 13-17, San Francisco, California, 1999.
  4. Xu, T., K. Pruess, F. Gérard, and G. Brimhall, Coupled modeling of non-isothermal multiphase flow, solute transport and reactive chemistry in geologic media,American Geophysical Union 1997 Fall Meeting, December 8-12, San Francisco, California, 1997.
  5. Xu, T, Coupled modeling of non-isothermal multiphase flow, solute transport and reactive chemistry in geologic media, Presented in a workshop on subsurface reactive transport modeling, Pacific Northwest National Laboratory, Richland, Washington,  1997.
  6. Xu, T, J. Samper, and C. Ayora, Sequential iteration approaches for modeling multicomponent reactive transport under local equilibrium conditions, The Hague, Proceeding of European Geophysical society 6th congress, 1995.

Lab Reports:

  1. Xu, T., E.L. Sonnenthal, N. Spycher, and K. Pruess, TOUGHREACT user's guide: A simulation program for non-isothermal multiphase reactive geochemical transport in variable saturated geologic media, Lawrence Berkeley National Laboratory Report LBNL-55460, pp. 192.
  2. Xu, T, J. A. Apps, and K. Pruess, Mass transfer, mineral alteration, and CO2 sequesration in a sandstone-shale system, Lawrence Berkeley National Laboratory Report LBNL-52566, Berkeley, California, 46 pp., 2003 (Submitted to “Chemical Geology”)
  3. Wu, Y.-S., Lu, G., Zhang, K., Liu, H.-H., Xu, T. and Sonnenthal, E.L., 2003. UZ Flow Models and Submodels, MDL-NBS-HS-000006 REV01D. BSC: Las Vegas, NV. (LBID-2480)
  4. Todaka , N., C. Akasaka, T. Xu, K. Pruess, Reactive geothermal transport simulation to study the formation mechanism of impermeable barrier between acidic and neutral fluid zones in the Onikobe, Lawrence Berkeley National Laboratory Report LBNL-52493, Berkeley, California, 36 pp., 2003.
  5. Xu, T, J. A. Apps, and K. Pruess, Reactive geochemical transport simulation to study mineral trapping for CO2 disposal in deep saline arenaceous aquifers, Lawrence Berkeley National Laboratory Report LBNL-50089, Berkeley, California, 66 pp., 2002.
  6. Xu, T., and K. Pruess, Thermophysical properties of sodium nitrate and sodium chloride solutions and their effects on fluid flow in unsaturated media, Lawrence Berkeley National Laboratory Report LBNL-48913, Berkeley, California,  pp. 48, 2001.
  7. Xu, T, J. A. Apps, and K. Pruess, Analysis of mineral trapping for CO2 disposal in deep aquifers, Lawrence Berkeley National Laboratory Report LBNL-47315, Berkeley, California, 106 pp., 2000.
  8. Juncosa, R., Xu, T, and K. Pruess, A comparison of results obtained with two subsurface non-isothermal multiphase reactive transport simulators, FADES-CORE and TOUGHREACT, Lawrence Berkeley National Laboratory Report LBNL-47315, Berkeley, California, 38 pp., 2000.
  9. Xu, T., K. Pruess, and G. Brimhall, Oxidative weathering chemical migration under variably saturated conditions and sugergene copper enrichment, Lawrence Berkeley National Laboratory Report LBNL-43129, Berkeley, California, 41 pp., 1999.
  10. Xu, T., and K. Pruess, Coupled modeling of non-isothermal multiphase flow, solute transport and reactive chemistry in porous and fractured media: 1. Model development and validation, Lawrence Berkeley National Laboratory Report LBNL-42050, Berkeley, California, 38 pp., 1998.
  11. Xu, T., E.L. Sonnenthal, N. Spycher, K. Pruess, and G. Brimhall, Coupled modeling of non-isothermal multiphase flow, solute transport and reactive chemistry in porous and fractured media: 2. Model applications, Lawrence Berkeley National Laboratory Report LBNL-42051, Berkeley, California, 54 pp., 1998.
  12. Xu, T., F. Gérard, K. Pruess, and G. Brimhall, Modeling non-isothermal multiphase multi-species reactive chemical transport in geologic media, Lawrence Berkeley Laboratory Report LBNL-40504, Berkeley, California, 79 pp., 1997.
  13. Sonnenthal E.L., J.T. Birkholzer, C. Doughty, T. Xu, J. Hinds and G. S. Bodvarsson, Level 4 Milestone SPLE2M4, Yucca Mountain Project, Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, September, 1997.
  14. Gérard, F., T. Xu, G. Brimhall, and  K. Pruess, Modeling reactive chemical transport problems with the codes EQ3/6 and TRANQUI, Lawrence Berkeley National Laboratory Report LBNL-40505, Berkeley, California,  1997.