All Stories

  1. Enhanced Deep Learning Using a Convolutionally Embedded Transformer Architecture for Reservoir Elastic Property Prediction: Comparison With Physics‐Based Seismic Inversion

    Article • Geophysical Prospecting, June 2026, Wiley

    Dr. Nisar Ahmed

  2. Seismic Pre-stack Inversion Using Iterative, Nonlinear Quasi-Second-Order Optimization Techniques

    Article • Mathematical Geosciences, March 2026, Springer Science + Business Media

    Dr. Nisar Ahmed

  3. Reservoir Elastic Properties Prediction using Supervised Deep Learning versus Model-Based Inversion Methods

    Article • January 2025, EAGE Publications

    Dr. Nisar Ahmed

  4. Seismic AVO inversion to estimate saturation-pore pressure changes during CO2 injection

    Article • January 2024, EAGE Publications

    Dr. Nisar Ahmed

  5. Seismic inersion for time-lapse CO2 storage monitoring

    Article • Geophysics, December 2023, Society of Exploration Geophysicists

    Dr. Nisar Ahmed , Dario Grana

  6. Architectural complexities and morphological variations of the indus fan and its elements: Understanding of the turbidite system through seismic characterization

    Article • Marine and Petroleum Geology, April 2023, Elsevier

    Dr. Nisar Ahmed

  7. Frequency-dependent AVO inversion applied to physically based models for seismic attenuation

    Article • Geophysical Journal International, November 2022, Oxford University Press (OUP)

    Dr. Nisar Ahmed

  8. Constrained non-linear AVO inversion based on the adjoint-state optimization

    Article • Computers & Geosciences, November 2022, Elsevier

    Dr. Nisar Ahmed

  9. Adjoint-state Method Based Strategy for Non-linear Seismic AVO Inversion

    Article • March 2022, Copernicus GmbH

    Dr. Nisar Ahmed

  10. AVA-anisotropy: spreadsheets program to model the variation of P-wave reflectivity with angle in VTI, HTI, and orthorhombic media

    Article • Arabian Journal of Geosciences, May 2021, Springer Science + Business Media

    Dr. Nisar Ahmed

  11. Assessment of Reservoir Rock Properties from Rock Physics Modeling and Petrophysical Analysis of Borehole Logging Data to Lessen Uncertainty in Formation Characterization in Ratana Gas Field, Northern Potwar, Pakistan

    Article • Journal of the Geological Society of India, June 2018, Springer Science + Business Media

    Dr. Nisar Ahmed

  12. Application of Extended Elastic Impedance and Best Chi-angle Prediction for Litho-Fluids Projections

    Article • April 2018, EAGE Publications

    Dr. Nisar Ahmed

  13. Estimation of reservoir properties from well logs and core plugs to reduce uncertainty in formation evaluation: a case study from the Kohat-Potwar Geologic Province

    Article • Episodes, March 2018, International Union of Geological Sciences

    Dr. Nisar Ahmed

  14. Reservoir Geomechanics Parameters Estimation Using Well Logs and Seismic Reflection Data: Insight from Sinjhoro Field, Lower Indus Basin, Pakistan

    Article • Arabian Journal for Science and Engineering, December 2017, Springer Science + Business Media

    Dr. Nisar Ahmed

  15. DHI evaluation by combining rock physics simulation and statistical techniques for fluid identification of Cambrian-to-Cretaceous clastic reservoirs in Pakistan

    Article • Acta Geophysica, August 2017, Springer Science + Business Media

    Dr. Nisar Ahmed

  16. Reservoir characterization of basal sand zone of lower Goru Formation by petrophysical studies of geophysical logs

    Article • Journal of the Geological Society of India, March 2017, Springer Science + Business Media

    Dr. Nisar Ahmed

  17. Erratum to: An application of rock physics modeling to quantify the seismic response of gas hydrate-bearing sediments in Makran accretionary prism, offshore, Pakistan

    Article • Geosciences Journal, November 2016, Springer Science + Business Media

    Dr. Nisar Ahmed

  18. Erratum to: An application of AVO derived attributes to analyze seismic anomalies of gas hydrate bearing sediments in Makran offshore, Pakistan

    Article • Acta Geodaetica et Geophysica, July 2016, Springer Science + Business Media

    Dr. Nisar Ahmed

  19. Improving Petrophysical Analysis and Rock Physics Parameters Estimation Through Statistical Analysis of Basal Sands, Lower Indus Basin, Pakistan

    Article • Arabian Journal for Science and Engineering, April 2016, Springer Science + Business Media

    Dr. Nisar Ahmed

  20. Seismic Attenuation and Velocity Dispersion to Discriminate Gas Hydrates and Free Gas Zone, Makran Offshore, Pakistan

    Article • International Journal of Geosciences, January 2016, Scientific Research Publishing, Inc,

    Dr. Nisar Ahmed

  21. Differentiation of Pore Fluids Using Amplitude versus Offset Attributes in Clastic Reservoirs, Middle Indus Basin, Pakistan

    Article • Arabian Journal for Science and Engineering, December 2015, Springer Science + Business Media

    Dr. Nisar Ahmed

  22. An application of AVO derived attributes to analyze seismic anomalies of gas hydrate bearing sediments in Makran offshore, Pakistan

    Article • Acta Geodaetica et Geophysica, October 2015, Springer Science + Business Media

    Dr. Nisar Ahmed

  23. Modulus defect, velocity dispersion and attenuation in partially-saturated reservoirs of Jurassic sandstone, Indus Basin, Pakistan

    Article • Studia Geophysica et Geodaetica, October 2015, Springer Science + Business Media

    Dr. Nisar Ahmed

  24. An application of rock physics modeling to quantify the seismic response of gas hydrate-bearing sediments in Makran accretionary prism, offshore, Pakistan

    Article • Geosciences Journal, September 2015, Springer Science + Business Media

    Dr. Nisar Ahmed

  25. An Integrated Seismic Interpretation and Rock Physics Attribute Analysis for Pore Fluid Discrimination

    Article • Arabian Journal for Science and Engineering, June 2015, Springer Science + Business Media

    Dr. Nisar Ahmed

  26. Rock physics modeling to assess the impact of spatial distribution pattern of pore fluid and clay contents on acoustic signatures of partially-saturated reservoirs

    Article • Acta Geodaetica et Geophysica, February 2015, Springer Science + Business Media

    Dr. Nisar Ahmed

  27. AVO forward modeling and attributes analysis for fluid’s identification: a case study

    Article • Acta Geodaetica et Geophysica, January 2015, Springer Science + Business Media

    Dr. Nisar Ahmed

  28. AVO-derived attributes to differentiate reservoir facies from non-reservoirs facies and fluid discrimination in Penobscot area, Nova Scotia

    Article • Geosciences Journal, November 2014, Springer Science + Business Media

    Dr. Nisar Ahmed