Publications: Akhil Datta-Gupta

Books/Significant Publications

Streamline Simulation: Theory and Practice, Akhil Datta-Gupta and M. J. King, Society of Petroleum Engineers, Textbook Series is now available. You can find it here.

 

The Oil Spill Recovery Institute: Past, Present and Future, The National Academies Press, Washington D.C. (2003), 165 pages (ISBN: 0-309-08514-4). Co-authored as part of the ‘Committee to Review the Oil Spill Recovery Institute’s Research Program’, National Research Council of the National Academies.

 

Editor, History Matching and Conditioning Geologic Models to Dynamic Data, Society of Petroleum Engineers Reprint Series (in Progress, expected Fall 09).

 

Subsurface Imaging and Fluid Flow: Asymptotic and Trajectory-based Methods, D. W. Vasco and Akhil Datta-Gupta, Cambridge University Press (in Progress, expected 2010).

 

Journal Articles

1.      Elkin Arroyo-Negrete, Deepak Devegowda, Akhil Datta-Gupta, “Streamline-Assisted Ensemble Kalman Filter for Rapid and Continuous Reservoir Model Updating,” SPE Reservoir Evaluation and Engineering (to appear, 2008)

2.      Ma, X., Al-Harbi, M., Datta-Gupta, A. and Efendiev, Y. “A Multistage Sampling Approach to Quantifying Uncertainty During History Matching Geological Models,” SPE Journal, 13(10) (March, 2008), 77-87.

3.      Stenerud, V. R., Kippe, V., Datta-Gupta, A. and Lie, K-A, “Adaptive Multiscale Streamline Simulation and Inversion for High-Resolution Geomodels,” SPE Journal, 13(10) (March, 2008), 99-111.

4.      Cheng, H., Oyerinde, D., Datta-Gupta, A. and Milliken, W. “Compressible Streamlines and Three-phase History Matching,” SPE Journal, 12 (4) (December 2007).

5.      Al-Huthali, A., Oyriende, D. and Akhil Datta-Gupta, “Optimal Water Flood Management Using Rate Control,” SPE Reservoir Evaluation and Engineering, 10 (4) (October 2007), 539-551.

6.      Efendiev, Y., Datta-Gupta, A., Ma Xilian and Mallick, B, “Modified MCMC for Dynamic Data Integration Using Streamline Models,” accepted for publication, Mathematical Geology (2007).

7.      Jimenez, E., Sabir, K., Datta-Gupta, A. and King, M. J., “Spatial Error and Convergence in Streamline Simulation,” SPE Reservoir Evaluation and Engineering , 10(3) (June, 2007), 221-232.

8.      Cheng, H., Osako, I., Datta-Gupta, A. and King, M. J. “A Rigorous Compressible Streamline Formulation for Two and Three Phase Black Oil Simulation,” SPE Journal, 11(4), (December 2006), 407-417.

  1. Kumar, A., Shekhar, R., Datta-Gupta, A., Gibson, R., “Time-Lapse seismic Monitoring of CO2 Sequestration with Compositional and Geochemical Effects,” accepted for a Special issue of Journal of Petroleum Science and Technology (2006).
  2. King, M. J., Burn, K. S., Wang, P., Muralidharan, V., Alvarado, F., Ma X. and Datta-Gupta SPE, A., “Optimal Coarsening of 3D Reservoir Models for Flow Simulation,” SPE Reservoir Evaluation and Engineering, 9(4), August 2006, p317-334.
  3. He, Zhong, Datta-Gupta, A., and Vasco, D. W., “Rapid Inverse Modeling of Pressure Interference Tests Using Trajectory-based Travel Time and Amplitude Matching” Water Resources Research, 42, W03419, doi:10.1029/2004WR003783, March 2006.
  4. Efendiev, Y., Datta-Gupta, A., Ginting, V., Ma, X. and Mallick, B., “An Efficient Two-Stage Markov Chain Monte Carlo Method for Dynamic Data Integration” Water Resources Research, 41, W12423, 10.1029/2004WR003764, Dec. 2005.
  5. Al-Harbi, M., Cheng, H., He, Zhong and Datta-Gupta, A., “Streamline-based Production Data Integration in Naturally Fractured Reservoirs,” SPE Journal, 10(4), December 2005, 426-439.
  6. Cheng, H, Khargoria, A., He, Z. and Datta-Gupta, A., “Fast History Matching of Finite-difference Models Using Streamline-derived Sensitivities,” SPE Reservoir Evaluation and Engineering, 8 (5), October 2005, p426-436.
  7. King, M. J., Osako, I. and Datta-Gupta A., “A Predictor Corrector-Formulation for Rigorous Streamline Simulation,” International Journal for Numerical Methods in Fluids, 47, 2005, 739-758.
  8. Perez, H., Datta-Gupta, A. and Misra, S., “The Role of Electrofacies, Lithofacies and Hydraulic Flow Units in Permeability Predictions from Well Logs: A Comparative Analysis Using Classification Trees,” SPE Reservoir Engineering and Evaluation, 8 (2), April 2005.
  9. Cheng, H., Datta-Gupta, A. and He, Zhong., “A Comparison of Travel Time and Amplitude Inversion for Production Data Integration into Geologic Models: Sensitivity, Non-linearity and Practical Implications,” SPE Journal, 10(1), March 2005, p75-90.
  10. Ates, H., Bahar, A., El-Abd, S., Charfeddine, M., Kelkar, M. and Datta-Gupta, A., “Ranking and Upscaling of Geostatistical Reservoir Models Using Streamline Simulation: A Field Case Study,” SPE Reservoir Engineering and Evaluation, 8(1), February 2005, p22-32.
  11. Malallah, A., Perez, H., Datta-Gupta, A. and Alamody, W., “Multiscale Data Integration Using Markov Random Fields and Markov Chain Monte Carlo: A Field Application in the Middle East,” SPE Reservoir Engineering and Evaluation, 8(6), December 2004.
  12. Efendiev, Y., Datta-Gupta A., Osako, I. and Mallick, B, “Multiscale Data Integration Using Coarse Scale Models,” Advances in Water Resources, 28(2005), 303-314.
  13. Ichiro, O., Datta-Gupta, A. and King, M. J., “Time Step Selection During Streamline Simulation via Transverse Flux Correction,” SPE Journal, 9 (4) December 2004, p459-464.
  14. Vasco, D. W., Datta-Gupta, A., Behrens, R., Condon, P. and Rickett, J., “Seismic Imaging of Reservoir Flow Properties: Time-Lapse Amplitude Changes,” Geophysics, 69 (6), Nov-Dec. 2004, p 1425-1442.
  15. Vega, L., Rojas, D. and  Datta-Gupta, A., “Scalability of the Deterministic and Bayesian Approaches to Production Data Integration Into Field-Scale Reservoir Models,” SPE Journal, 9 (3) September 2004, 330-338.
  16. He, Zhong, Parikh, H., Datta-Gupta, A., Perez, J. and Pham, T., “Identifying Reservoir Compartmentalization and Flow Barriers Using Primary Production: A Streamline Approach,” SPE Reservoir Evaluation and Engineering, 7 (3), June 2004, p238-246.
  17. Al-Huthali, A. and Datta-Gupta, A., “Streamline Simulation of Counter-Current Imbibition in Naturally Fractured Reservoirs,” Journal of Petroleum Science and Engineering, 43 (2004), 271-300.
  18. Vasco, D. W., Datta-Gupta, A., Behrens, R., Condon, P. and Rickett, J., “Seismic Imaging of  Reservoir Flow Properties: Time-Lapse Amplitude Changes,” Geophysics (to appear, 2004)
  19. Mathisen, T., Lee, S. H. and Datta-Gupta, A., “Improved Permeability Estimates in Carbonate Reservoirs Using Electrofacies Characterization: A Case Study of the North Robertson Unit, West Texas,” SPE Reservoir Evaluation and Engineering, June 2003.
  20. Lee, S. H. and Datta-Gupta, A., “Electrofacies Characterization and Permeability Predictions in Carbonate Reservoirs: Role of Multivariate Analysis and Non-parametric Regression,” SPE Reservoir Evaluation and Engineering, June 2002.
  21. Illiassov, P., Datta-Gupta, A. and Vasco, D. W., " Field-scale Characterization of Permeability and Saturation Distribution Using Partitioning Tracer Tests: The Ranger Field, Texas," SPE Journal, 7 (4), December 2002.
  22. He, Zhong and Datta-Gupta, A. "Streamline-based Production Data Integration Under Changing Field Conditions," SPE Journal , 7 (4), December 2002.
  23. Wu, Z. and Datta-Gupta, A., "Rapid History Matching Using a Generalized Travel Time Inversion Method," SPE Journal (June, 2002)
  24. Datta-Gupta, A., Yoon, S. S., Pope, G. A., Vasco, D. W., "Inverse Modeling of Partitioning Interwell Tracer Tests: A Streamline Approach", Water Resources Research, 30 (6),10.1029, 2002.
  25. Lee, S. H., Malallah, A., Datta-Gupta, A. and Higdon, D., "Multiscale Data Integration Using Markov Random Fields," SPE Reservoir Evaluation and Engineering, February 2002.
  26. Mishra, S., Choudhary, M. K. and Datta-Gupta, A., "A Novel Approach for Reservoir Forecasting Under Uncertainty," SPE Reservoir Evaluation and Engineering, February 2002.
  27. Vasco, D. W. and Datta-Gupta, A., "Asymptotics, Streamlines and Reservoir Modeling: A Pathway to Production Tomography," The Leading Edge, Special Issue on Reservoir Modeling, October 2001.
  28. Kulkarni, K. N., Datta-Gupta, A. and Vasco, D. W., "A Streamline Approach to Integrating Transient Pressure Data Into High-Resolution Reservoir Models," SPE Journal, September 2001.
  29. Datta-Gupta, A. and Vasco, D. W., "Production Tomography Merges Geophysics and Reservoir Engineering," Oil and Gas Journal, June (2001)
  30. Yoon, S. S., Malallah, A., Datta-Gupta, A., Vasco, D. W. and Behrens, R. A., "A Multiscale Approach to Production Data Integration Using Streamline Models," SPE Journal, June (2001)
  31. Vasco, D. W. and Datta-Gupta, A, "Asymptotics, Saturation Fronts and High Resolution Reservoir Characterization, Transport in Porous Media, 42, 315-350, 2001.
  32. Datta-Gupta, A., Yoon, S. S., Nordaas, K. and Vasco, D. W. "Streamlines, Ray Tracing and Production Tomography: Generalization to Compressible Flow," Petroleum Geoscience, Vol. 7, 2001, p S75-S86 (special supplement on Geostatistics).
  33. Datta-Gupta, A., "Streamline Simulation: A Technology Update," SPE Distinguished Author Series, Journal of Petroleum Technology, 68-73 (December 2000).
  34. Kulkarni, K. N. and Datta-Gupta, A., "Estimating Relative Permeability from Production Data: A Streamline Approach," SPE Journal, 5 (4), December (2000).
  35. Vasco, D. W., Yoon, S. and Datta-Gupta, A. "Integrating Dynamic Data into High Resolution Reservoir Models Using Streamline-Based Analytic Sensitivity Coefficients," SPE Journal, 4 (4), December (1999).
  36. Vasco, D. W. and Datta-Gupta, A., "Asymptotic Solutions for Solute Transport: A Formalism for Tracer Tomography," Water Resources Research, 35 (1), 1-16 (1999).
  37. Datta-Gupta, A., Yoon, S., Barman, I., Vasco, D. W. "Streamline-Based Production Data Integration" Journal of Petroleum Technology, December, 72-76 (1998).
  38. King, M. J. and Datta-Gupta, A., "Streamline Simulation: A Current Perspective," In Situ, 22 (1), (1998).
  39. 10. Vasco, D. W. and Datta-Gupta, A."Integrating Multiphase Production History in Stochastic Reservoir Characterization," SPE Formation Evaluation, 12 (3), 149-156 (1997).
  40. Xue, G., Datta-Gupta, A., Peter Valko and T. A. Blasingame, "Optimal Transformation for Multiple Regression: Application to Permeability Estimation from Well Logs," SPE Formation Evaluation, 12 (2), 85-93 (1997).
  41. Datta-Gupta, A., Vasco, D. W. and Long, J. C. S. "On the Sensitivity and Spatial Resolution of Transient Pressure and Tracer Data for Heterogeneity Characterization", SPE Formation Evaluation, 12 (2), 137-144 (1997).
  42. Vasco, D. W., Datta-Gupta, A. and Long, J. C. S., "Resolution and Uncertainty in Hydrologic Characterization,"  Water Resources Research  33 (3), 379-397 (1997).
  43. Majer, E. L., Datta-Gupta, A., Peterson, J. E., Vasco, D. W., Myer, L. R., Daley, T. M., Kaelin, B., Queen, J., D’Onfro, P. S., Rizer, W. D., Cox, D., and Sinton, J., Utilizing Crosswell, Single Well and Pressure Transient Tests for Characterizing Fractured Gas Reservoirs, The Leading Edge, 15(8), 951-955 (1996).
  44. Datta-Gupta, A. and King, M. J. "A Semianalytic Approach to Tracer Flow Modeling in Heterogeneous Permeable Media",  Advances in Water Resources, 18 (1), 9-24 (1995).
  45. Datta-Gupta, A, Lake, L. W. and Pope, G. A., "Characterizing Heterogeneous Permeable Media With Spatial Statistics and Tracer Data Using Sequential Simulated Annealing,"  Mathematical Geology  , 27 (6), 763-787, 1995.
  46. Jacobsen, J., Bethel, W., Datta-Gupta, A., and Holland, P, "`Virtual' Reservoir Development a Reality on Prototype System., " American Oil & Gas Reporter, 38 (12), 78-86, 1995.
  47. Datta-Gupta, A., Vasco, D. W. and Long, J. C. S., "Detailed Characterization of a Fractured Limestone Formation Using Stochastic Inverse Approaches," SPE Formation Evaluation, 10 (3), 133-140, 1995.
  48. Sen, M., Datta-Gupta, A., Stoffa, P., Lake, L. W. and Pope, G. A., "Stochastic Reservoir Modeling Using Simulated Annealing and Genetic Algorithm," SPE Formation Evaluation, 10 (1), 49-55, 1995.
  49. Datta-Gupta, A., Lake, L. W., Pope, G. A. and King, M. J., "A Type Curve Approach to Analyzing Two-Well Tracer Tests," SPE Formation Evaluation, 10 (1), .40-48, 1995.
  50. Datta-Gupta, A., Lake, L. W., Pope, G. A., Sepehrnoori, K. and King, M. J., "High Resolution Monotonic Schemes for Reservoir Fluid Flow Simulation," In Situ, 15 (3), 289-317,1991.
  51. Datta-Gupta, A., "Accurate Resolution of Physical Dispersion in the Multidimensional Numerical Modeling of Miscible and Chemical Displacements," SPE Reservoir Engineering,  15 (4), 581-588,1990.
  52. Datta-Gupta, A., Shook, M., Pope, G. A. and Sepehrnoori, K., "Effects of Reservoir Heterogeneity on Chemically Enhanced Oil Recovery," SPE Reservoir Engineering, 3 (2), 479-488, 1988 (Also in SPE Reprint Series No. 24, Surfactant/Polymer Chemical Flooding II).
  53. Datta Gupta, A., Pope, G. A., Sepehrnoori, K. and Thrasher, R. L., "A Symmetric Positive Definite Formulation of a Three Dimensional Micellar/Polymer Simulator," SPE Reservoir Engineering, Nov. 1986 (Also in SPE Reprint Series No. 24, Surfactant/Polymer Chemical Flooding II).
  54. Datta Gupta, A., Mossberg, B., Pope, G. A. and Sepehrnoori, K., "Application of Vector Processors to Chemical Enhanced Oil Recovery Simulation," Communications in Applied Numerical Methods, Vol. 2., 1986.

Peer-Reviewed Book Chapters

  1. Datta-Gupta, A., Devegowda, D., Oyerinde, D. and Cheng, H., “The Role of Streamline Models for Data Assimilation in Petroleum Engineering and Hydrogeology,” in Quantitative Information Fusion for Hydrological Sciences, Eds. Xing Cai and T.-C. Jim Yeh, Springer Verlag Publishers (2007).
  2. Coburn, T. C., Corbett, P. W. M., Datta-Gupta, A., Jensen, J. L., Kelkar, M., Oliver, D. S. and White, C. D., “A Virtual Conversation on the Impact of Geostatistics on Petroleum, Production and Reservoir Engineering,” in Stochastic Modeling II, AAPG, 2005.
  3. Datta-Gupta, A., Xue, Guoping and Lee, Sangheon, “Non-parametric Transformations for Data Correlation and Integration: From Theory to Practice,” Recent Advances in Reservoir Characterization, R. Schatzinger and J. Jordan (Eds.), American Association of Petroleum Geologists, Tulsa (May, 1999).
  4. D’Onfro, P. S., Rizer, W. D., Queen, J. H., Majer, E. L., Peterson, J., Daley, T. M., Vasco, D. W., Datta-Gupta, A. and Long, J. C. S., “An Integrated Approach For Characterizing Fractured Reservoirs,” Faulting, Fault Sealing and Fluid Flow in Hydrocarbon Reservoirs, G. Jones, Q. J. Fisher and R. J. Knipe (Eds.), Geological Society, London, Special Publication, 147, 193-208 (1998).
  5. Long, J. C. S., Doughty C., Datta-Gupta, A., Hestir, K. and Vasco, D. W., "Component Characterization: An Approach to Fracture Hydrogeology," Subsurface Flow and Transport: The Stochastic Approach, G. Dagan and S. P. Neuman (Eds.), Cambridge University Press, 179-195 (1997).
  6. Datta-Gupta, A., Lake, L. W. and Pope, G. A., "Heterogeneity and Mixing in Flow Through Reservoirs," in Computational Methods in Water Resources IX, Vol .2: Mathematical Modeling in Water Resources, Elsevier Applied Science (1992).

Manuscripts in Review

1.      Akella, S.., Efendiev, Y. and Datta-Gupta, A, “Ensemble Kalman Filter with Coarse-scale Constraints,” Advances in Water Resources, Submitted (March. 2008).

 

Conference Proceedings

1.      Ma, Xianlin., Datta-Gupta, A., and Efendiev, Y., “A Multistage MCMC method with Non-parametric Error Models for Efficient Uncertainty Quantification in History Matching,” SPE  115911 presented at the 2008 SPE Annual Technical Conference and Exhibition held in Denver, Colorado, USA, 21–24 September 2008.

2.      Al-Huthali, A., Datta-Gupta, A., Yuen, B. and Fontanilla, J. P., “Optimal Rate Control Under Geologic Uncertainty,” SPE 113628 presented at the 2008 SPE Improved Oil Recovery Symposium held in Tulsa, Oklahoma, U.S.A., 19–23 April 2008.

3.      Jimenez, E., Datta-Gupta, A. and King, M. J., “Streamline Tracing in Complex Faulted Systems with non-Neighbor Connections,” SPE  113628 presented at the 2008 SPE Improved Oil Recovery Symposium held in Tulsa, Oklahoma, U.S.A., 19–23 April 2008.

4.      Maucec, M., Douma, S., Hohl, D., Jimenez, E. and Datta-Gupta, A., “Streamline-Based History Matching and Uncertainty--Markov-Chain Monte Carlo Study of an Offshore Turbidite Oil Field,” SPE 109943 presented at the 2007 SPE Annual Technical Conference and Exhibition, Anaheim, CA, U.S.A., 11–14 November 2007.

5.      Oyerinde, Adedayo., Datta-Gupta, A., and Milliken, W., “Experiences With Streamline-Based Three-phase History Matching,” SPE 109964 presented at the 2007 SPE Annual Technical Conference and Exhibition, Anaheim, CA, U.S.A., 11–14 November 2007.

6.      Devegowda Deepak, Arroyo, Elkin and Datta-Gupta, A., “Efficient and Robust Reservoir Model Updating Using Ensemble Kalman Filter With Sensitivity Based Covariance Localization,” SPE 106144 to be presented at the SPE Reservoir Simulation Symposium, Houston, TX, 26-28 February, 2007.

7.      Osako, Ichiro and Datta-Gupta, A., “ A Novel Compositional Streamline Formulation with Compressiblity Effects,” SPE 106148 to be presented at the SPE Reservoir Simulation Symposium, Houston, TX, 26-28 February, 2007.

8.      Stenerud, V. R., Kippe, V., Datta-Gupta, A. and Lie, K-A, “Adaptive Multiscale Streamline Simulation and Inversion for High-Resolution Geomodels,” SPE 106228, presented at the SPE Reservoir Simulation Symposium, Houston, TX, 26-28 February, 2007.

9.      Devegowda Deepak, Arroyo, Elkin and Datta-Gupta, A., “Efficient and Robust Reservoir Model Updating Using Ensemble Kalman Filter With Sensitivity Based Covariance Localization,” SPE 106144 to be presented at the SPE Reservoir Simulation Symposium, Houston, TX, 26-28 February, 2007.

10.  Elkin Arroyo-Negrete, Deepak Devegowda, Akhil Datta-Gupta, “Streamline-Assisted Ensemble Kalman Filter for Rapid and Continuous Reservoir Model Updating,” SPE 104255 to be presented at the 2006 SPE International Oil & Gas Conference and Exhibition in China held in Beijing, China, 5–7 December 2006.

11.  Al-Huthali, A., Oyriende, D. and Akhil Datta-Gupta, “Optimal Water Flood Management Using rate Control,” SPE 102478 to be presented at the 2006 SPE Annual Technical Conference and Exhibition, San Antonio, Texas, U.S.A., 24–27 September 2006

12.  Ma, X., Al-Harbi, M., Datta-Gupta, A. and Efendiev, Y. “A Multistage Sampling Approach to Quantifying Uncertainty During History Matching Geological Models,” SPE 102476 presented at the SPE Annual Technical Conference and Exhibition held in San Antonio, Texas, U.S.A., 24–27 September 2006.

13.  Cheng, H., Osako, I., Datta-Gupta, A. and King, M. J. “A Rigorous Compressible Streamline Formulation for Two and Three Phase Black Oil Simulation,” SPE 96866 presented at the SPE Annual Technical Conference and Exhibition, Dallas, TX, October 9-12, 2005.

14.  King, M. J., Burn, K. S., Wang, P., Muralidharan, V., Alvarado, F., Ma X. and Datta-Gupta SPE, A., “Optimal Coarsening of 3D Reservoir Models for Flow Simulation,” SPE 95759 presented at the SPE Annual Technical Conference and Exhibition, Dallas, TX, October 9-12, 2005.

1.      Jimznez, E., Sabir, K., Datta-Gupta, A. and King, M. J., “Spatial Error and Convergence in Streamline Simulation,” SPE 92873 Presented at the 2005 SPE Reservoir Simulation Symposium The Woodlands, TX., U.S.A., 31 January–02 February 2005

2.      Al-Harbi, M., Cheng, H., He, Zhong and Datta-Gupta, A., “Streamline-based Production Data Integration in Naturally Fractured Reservoirs,” SPE 89914 presented at the SPE Annual Technical Conference and Exhibition, Houston, TX, September 26-29, 2004.

3.      Cheng, H., Wen, X, Milliken, W. and Datta-Gupta, A., “Field Experiences with Assisted and Automatic History Matching Using Streamline Models,” SPE 89857 presented at the SPE Annual Technical Conference and Exhibition, Houston, TX, September 26-29, 2004

4.      Al-Huthali, A. and Datta-Gupta, A., “Streamline Simulation of Water Injection in Naturally Fractured Reservoirs,” SPE 89443 presented at the SPE/DOE fourteenth symposium on Improved Oil Recovery, Tulsa, OK, April 17-21, 2004.

5.      King, M. J., Osako, I. and  Datta-Gupta A., “A Predictor Corrector-Formulation for Rigorous Streamline Simulation,” Presented at the 8th Oxford Institute of Computational Fluid Dynamics Conference
Oxford University, Oxford, England, March 29 – April 1, 2004

6.      Cheng, H, Khargoria, A., He, Z. and Datta-Gupta, A., “Fast History Matching of Finite-difference Models Using Streamline-derived Sensitivities,” SPE 89447 presented at the SPE/DOE fourteenth symposium on Improved Oil Recovery, Tulsa, OK, April 17-21, 2004

7.      Cheng, H., Datta-Gupta, A. and He, Zhong., “A Comparison of Travel Time and Amplitude Inversion for Production Data Integration into Geologic Models,” SPE 84570 presented at the SPE Annual Technical Conference and Exhibition , Denver, CO, October  5-8, 2003.

8.      Perez, H., Datta-Gupta, A. and Misra, S., “The Role of Electrofacies, Lithofacies and Hydraulic Flow Units in Permeability Predictions from Well Logs: A Comparative Analysis Using Classification Trees,” SPE 84301 presented at the SPE Annual Technical Conference and Exhibition , Denver, CO, October  5-8, 2003.

9.      Vasco, D. W., Datta-Gupta, A., He, Z., Behrens, R., Rickett, J. and Condon, P., “Reconciling Time-Lapse Seismic and Production Data Using Streamline Models: The Bay Marchand Field, Gulf of Mexico,” SPE 84568 presented at the SPE Annual Technical Conference and Exhibition , Denver, CO, October  5-8, 2003.

10.  Qassab, H, Khalifa, M, Pavlas, R., Khargoria, A., He, Zhong, Lee, S. H. and Datta-Gupta, A., “Streamline-based Production Data Integration Under Realistic Field Conditions: Experience in a Giant Middle-Eastern Oil Reservoir,” SPE 84079 presented at the SPE Annual Technical Conference and Exhibition , Denver, CO, October  5-8, 2003..

11.  Ates, H., Bahar, A., El-Abd, S., Charfeddine, M., Kelkar, M. and Datta-Gupta, A., “Ranking and Upscaling of Geostatistical Reservoir Models Using Streamline Simulation: A Field Case Study,” presented at the SPE 13th Middle East Oil Show & Conference tp be held in Bahrain 2-6 June 2003.

12.  Malallah, A., Perez, H., Datta-Gupta, A. and Alamody, W., “Multiscale Data Integration Using Markov Random Fields and Markov Chain Monte Carlo: A Field Application in the Middle East,”SPE 81544 presented at the SPE 13th Middle East Oil Show & Conference, Bahrain 2-6 June 2003.

13.  Ichiro, O., Datta-Gupta, A. and King, M. J., “Time Step Selection During Streamline Simulation via Transverse Flux Correction,” SPE 79688 presented at the SPE Reservoir Simulation Symposium, Houston, TX, February 3-5, 2003.

14.  Vega, L., Rojas, D. and  Datta-Gupta, A., “Scalability of the Deterministic and Bayesian Approaches to Production Data Integration Into Field-Scale Reservoir Models,” SPE 79666 presented at the SPE Reservoir Simulation Symposium, Houston, TX, February 3-5, 2003.

15.  He, Zhong, Parikh, H., Datta-Gupta, A., Perez, J. and Pham, T., “Identifying Reservoir Compartmentalization and Flow Barriers Using Primary Production: A Streamline Approach,” SPE 77589 presented at the 2002 SPE Annual Technical Conference and Exhibition, San Antonio, TX, Sept. 29-Oct. 2.

16.  He, Zhong and Datta-Gupta, A. "Streamline-based Production Data Integration Under Changing Field Conditions," SPE 71333 presented at the 2001 SPE Annual Technical Conference and Exhibition,, New Orleans, LA, Sept. 30-Oct. 3,

17.  Illiassov, P., Datta-Gupta, A. and Vasco, D. W., " Field-scale Characterization of Permeability and Saturation Distribution Using Partitioning Tracer Tests: The Ranger Field, Texas," SPE 71320 presented at the 2001 SPE Annual Technical Conference and Exhibition,, New Orleans, LA, Sept. 30-Oct. 3

18.  Mathisen, T., Lee, S. H. and Datta-Gupta, A., “Improved Permeability Estimates in Carbonate Reservoirs Using Electrofacies Characterization: A Case Study of the North Robertson Unit, West Texas,” SPE 70034 in Proceedings of the Permian Basin Oil and Gas Recovery Conference, Midland, TX 15-16 May, 2001.

19.  Idrobo, E. A., Choudhury, M. K. and Datta-Gupta, A., “Swept Volume Calculations and Ranking of Geostatistical Reservoir Models Using Streamline Simulation,” SPE 62557 presented at the 2000 SPE/AAPG Western Regional Meeting, Long Beach, California, June 19-23.

20.  Kulkarni, K. N., Datta-Gupta, A. and Vasco, D. W., “A Streamline Approach to Integrating Transient Pressure Data Into High-Resolution Reservoir Models,” SPE 65120 in Proceedings of the SPE European Petroleum Conference, Paris, France, 24-25, October 2000.

21.  Lee, S. H., Malallah, A., Datta-Gupta, A. and Higdon, D., “Multiscale Data Integration Using Markov Random Fields,” SPE 63066, in Proceedings of the 2000 SPE Annual Technical Conference and Exhibition, Dallas, TX, 1-4, October 2000.

22.  Mishra, S., Choudhary, M. K. and Datta-Gupta, A., “A Novel Approach for Reservoir Forecasting Under Uncertainty,” SPE 62926, in Proceedings of the 2000 SPE Annual Technical Conference and Exhibition, Dallas, TX, 1-4, October 2000.

23.  Idrobo, E. A., Malallah, A., Datta-Gupta, A. and Parra, J. O., “Characterizing Fluid Saturation Distribution Using Cross-well Seismic and Well Data: A Geostatistical Study,” SPE 56515 in Proceedings of the SPE Annual Technical Conference and Exhibition, Houston, TX, 3-6 October, 1999.

24.  Lee, S. H. and Datta-Gupta, A., “Electrofacies Characterization and Permeability Predictions in Carbonate Reservoirs: Role of Multivariate Analysis and Non-parametric Regression,” SPE 56658 in Proceedings of the SPE Annual Technical Conference and Exhibition, Houston, TX, 3-6 October, 1999.

25.  Yoon, S. S., Malallah, A., Datta-Gupta, A., Vasco, D. W. and Behrens, R. A., “A Multiscale Approach to Production Data Integration Using Streamline Models, SPE 56653 in Proceedings of the SPE Annual Technical Conference and Exhibition, Houston, TX, 3-6 October, 1999.

26.  Kulkarni, K. N. and Datta-Gupta, A., “Estimating Relative Permeability from Production Data: A Streamline Approach,” SPE 56751 in Proceedings of the SPE Annual Technical Conference and Exhibition, Houston, TX, 3-6 October, 1999.

27.  Yoon, S., Barman, I., Datta-Gupta, A. and Pope, G. A., “In-Situ Characterization of Residual NAPL Distribution Using Streamline-Based Inversion of Partitioning Tracer Tests,” SPE 52729 in Proceedings of the 1999 SPE/EPA Exploration and Production Environmental Conference, Austin, TX, 28 February - 3 March, 1999.

28.  Vasco, D. W., Yoon, S. and Datta-Gupta, A. "Integrating Dynamic Data into High Resolution Reservoir Models Using Streamline-Based Analytic Sensitivity Coefficients," SPE 49002, in Proceedings of the SPE Annual Technical Conference and Exhibition, New Orleans, LA, 27-30 September, 1998.

29.  Cobenas R. H., Datta-Gupta, A. and Aprilian S. S., "A Closer Look at Non-Uniqueness During Dynamic Data Integration into Reservoir Characterization," SPE 39669, in Proceedings of SPE/DOE  Symposium on Improved Oil Recovery, Tulsa, OK, April 19-22, 1998.

30.  Barman I., Sharma A.K., Datta-Gupta A. and Walker R.F., "Permeability Predictions in Carbonate Reservoirs Using Optimal Non-parametric Transforms: An Application at the Salt Creek Field, Kent County, TX," SPE 39667, in Proceedings of SPE/DOE  Symposium on Improved Oil Recovery, Tulsa, OK, April 19-22, 1998.

31.  Xue, G. and Datta-Gupta, A., "Structure Preserving Inversion: An Efficient Approach to Conditioning Stochastic Reservoir Models to Dynamic Data," SPE 38727, in Proceedings of of the SPE Annual Technical Conference and Exhibition, San Antonio, TX, October 5-8, 1997.

32.  Peddibhotla, S., Datta-Gupta A. and Xue, G., “Multiphase streamline Modeling in Three Dimensions: Further generalizations and a Large-scale Field Example,” SPE 38003, in Proceedings of the 14th SPE Reservoir Simulation Symposium, Dallas (June, 1997).

33.  Datta-Gupta, A., Xue, Guoping and Lee, Sangheon, “Non-parametric Transformations for Data Correlation and Integration: From Theory to Practice,” in Proceedings of the Fourth International Reservoir Characterization Conference, Houston, TX (March, 1997).

34.  Xue, G. and Datta-Gupta, A., "A New Approach to Seismic Data Integration During Reservoir Characterization using Optimal non-Parametric Transformations," SPE 36500, in Proceedings of SPE Annual Technical Conference and Exhibition, Denver, Colorado, U.S.A., 6-9 October, 1996.

35.  Economides, M.J., Datta-Gupta, A., Ehlig-Economides, C.A., Valkó, P., and Zolotukhin, A.B.: Advances in Petroleum Engineering, 1996, presented at the 1996 All-Russian Scientific Conference on Fundamental Problems of Oil and Gas, Moscow, Russia, Jan. 22–25.

36.  Peddibhotla, S., Cubillos H. G., Datta-Gupta A. and Wu C. H., “Rapid Simulation of Multiphase Flow Through Fine-scale Geostatistical Realizations Using a New 3D Streamline Model: A Field Example,” SPE 36008 in Proceedings of the 11th SPE Petroleum Computer Conference, Dallas (June, 1996).

37.  Xue, G. and Datta-Gupta, A., "A New Approach to Seismic Data Integration During Reservoir Characterization using Optimal non-Parametric Transformations," SPE 36500, Presented at the SPE Annual Technical Conference and Exhibition, Denver, Colorado, U.S.A., 6-9 October, 1996.

38.  Vasco, D. W., Datta-Gupta, A. and Long, J. C. S. "Integrating Field Production History in Stochastic Reservoir Characterization," SPE 36567, Presented at the SPE Annual Technical Conference and Exhibition, Denver, Colorado, U.S.A., 6-9 October, 1996.

39.  Datta-Gupta, A., Vasco, D. W. and Long, J. C. S. "Sensitivity and Spatial Resolution of Transient Pressure and Tracer Data for Heterogeneity Characterization", SPE 30589, in Proceedings of the SPE Annual Technical Conference and Exhibition, Dallas, TX, October, 1995.

40.  Jacobsen, J. S., Bethel, E. W., Datta-Gupta, A., and Holland, P. J., "Petroleum Reservoir Simulation in a Virtual Environment," SPE 29118 in Proceedings of the 13th Symposium on Reservoir Simulation, San Antonio (1995).

41.  Datta-Gupta, A., Vasco, D. W., Long, J. C. S. and Vomvoris, S., "Stochastic Modeling of Spatial Heterogeneities Conditioned to Hydraulic and Tracer Tests," in Proceedings of the Fifth International High Level Radioactive Waste Management Meeting, Las Vegas, 4, 2624-2632, 1994.