All Stories

  1. Integrated VTI model building with seismic data, geologic information, and rock-physics modeling — Part 1: Theory and synthetic test

    Article • Geophysics, September 2016, Society of Exploration Geophysicists

    Dave Nichols

  2. Integrated VTI model building with seismic data, geologic information, and rock-physics modeling — Part 2: Field data test

    Article • Geophysics, September 2016, Society of Exploration Geophysicists

    Dave Nichols

  3. Least-squares migration — Data domain versus image domain using point spread functions

    Article • The Leading Edge, February 2016, Society of Exploration Geophysicists

    Dave Nichols

  4. Toward a closed loop from seismic imaging to earth-model building

    Article • The Leading Edge, February 2016, Society of Exploration Geophysicists

    Dave Nichols

  5. Integrated VTI Model Building with Seismic, Geological and Rock Physics Data

    Article • June 2015, EAGE Publications

    Dave Nichols

  6. Anisotropic depth imaging in presence of stress: transversely Isotropic or orthorhombic?

    Article • ASEG Extended Abstracts, January 2015, CSIRO Publishing

    Dave Nichols

  7. Introduction to this special section: Imaging migration

    Article • The Leading Edge, September 2014, Society of Exploration Geophysicists

    Dave Nichols

  8. A new technique for seismic Q tomography and migration compensation

    Article • August 2014, Society of Exploration Geophysicists

    Dave Nichols, Yi Shen

  9. Stochastic rock physics modeling for seismic anisotropy

    Article • August 2014, Society of Exploration Geophysicists

    Dave Nichols

  10. Wave-equation migration velocity analysis for VTI models

    Article • Geophysics, May 2014, Society of Exploration Geophysicists

    Dave Nichols

  11. Joint PP/PS tomography with floating event constraints

    Article • August 2013, Society of Exploration Geophysicists

    Dave Nichols

  12. Band-limited ray tracing

    Article • Geophysical Prospecting, August 2013, Wiley

    Dave Nichols

  13. Model-uncertainty quantification in seismic tomography: method and applications

    Article • Geophysical Prospecting, August 2013, Wiley

    Dave Nichols

  14. Assessing E&P and Drilling Risks With Seismic Uncertainty Analysis

    Article • January 2013, Society of Petroleum Engineers (SPE)

    Dave Nichols

  15. Assessing E&P and Drilling Risks With Seismic Uncertainty Analysis

    Article • January 2013, Society of Petroleum Engineers (SPE)

    Dave Nichols

  16. Wave-equation Migration Q Analysis (WEMQA)

    Article • January 2013, EAGE Publications

    Dave Nichols

  17. Application of the Rock Physics Model in Anisotropic Seismic Velocity Model Building and Quantitative Reservoir Structural Uncertainty Analysis: Gulf of Mexico Case Study

    Article • January 2013, Society of Petroleum Engineers (SPE)

    Dave Nichols

  18. Inversion after depth imaging

    Article • September 2012, Society of Exploration Geophysicists

    Dave Nichols

  19. Resolution in Seismic Inversion- Spectral Gap or Spectral Overlap, Which is Harder to Handle?

    Article • July 2012, EAGE Publications

    Dave Nichols

  20. Quantitative Analysis of Seismic Uncertainty

    Article • April 2012, EAGE Publications

    Dave Nichols

  21. Normalization strategies for reverse‐time migration

    Article • January 2011, Society of Exploration Geophysicists

    Dave Nichols

  22. Efficient RTM angle gathers using source directions

    Article • January 2011, Society of Exploration Geophysicists

    Dave Nichols

  23. From quantifying seismic uncertainty to assessing E&P risks and the value of information

    Article • January 2011, Society of Exploration Geophysicists

    Dave Nichols

  24. On the separation of simultaneous‐source data by inversion

    Article • January 2011, Society of Exploration Geophysicists

    Dave Nichols

  25. Building Anisotropic Models for Depth Imaging: Comparing Different Approaches

    Article • January 2011, Society of Petroleum Engineers (SPE)

    Dave Nichols

  26. Localized anisotropic tomography with well information in VTI media

    Article • Geophysics, September 2010, Society of Exploration Geophysicists

    Dave Nichols

  27. Building tilted transversely isotropic depth models using localized anisotropic tomography with well information

    Article • Geophysics, July 2010, Society of Exploration Geophysicists

    Dave Nichols

  28. Building Local Anisotropic Models using Joint Tomography of Seismic and Well Data

    Article • May 2010, EAGE Publications

    Dave Nichols

  29. 19. Seismic Velocity/Statics

    Article • January 2010, Society of Exploration Geophysicists

    Dave Nichols

  30. Application of steering filters to localized anisotropic tomography with well data

    Article • January 2010, Society of Exploration Geophysicists

    Dave Nichols

  31. Angle gathers for RTM using extended imaging conditions

    Article • January 2010, Society of Exploration Geophysicists

    Dave Nichols

  32. Gaining insights about imaging uncertainty: TTI 3D synthetic case study

    Article • January 2010, Society of Exploration Geophysicists

    Dave Nichols

  33. Anisotropic model building with uncertainty analysis

    Article • January 2009, Society of Exploration Geophysicists

    Dave Nichols

  34. Can we distinguish TTI and VTI media?

    Article • January 2009, Society of Exploration Geophysicists

    Dave Nichols

  35. Localized anisotropic tomography with well information in VTI media

    Article • January 2009, Society of Exploration Geophysicists

    Dave Nichols

  36. Building TTI depth models using anisotropic tomography with well information

    Article • January 2009, Society of Exploration Geophysicists

    Dave Nichols

  37. A decade of tomography

    Article • Geophysics, September 2008, Society of Exploration Geophysicists

    Dave Nichols

  38. Choosing a good set of beams for rapid prestack depth migration

    Article • January 2008, Society of Exploration Geophysicists

    Dave Nichols

  39. Residual moveout estimation and application to AVO, stack enhancement, and tomography

    Article • January 2005, Society of Exploration Geophysicists

    Dave Nichols

  40. Towards a hybrid raytrace‐based beam/wavefield‐extrapolated beam migration algorithm

    Article • January 2002, Society of Exploration Geophysicists

    Dave Nichols

  41. Application of the Li correction to explicit depth‐extrapolation methods

    Article • January 1999, Society of Exploration Geophysicists

    Dave Nichols

  42. Automated 3D tomographic velocity analysis of residual moveout in prestack depth migrated common image point gathers

    Article • January 1998, Society of Exploration Geophysicists

    Dave Nichols

  43. 5. Amplitude-Preserved Processing and Analysis of the Mobil AVO Data Set

    Article • January 1998, Society of Exploration Geophysicists

    Dave Nichols

  44. Improving prestack imaging by using a new ray selection method

    Article • January 1998, Society of Exploration Geophysicists

    Dave Nichols

  45. Prestack depth migration of converted wave data in anisotropic media

    Article • January 1998, Society of Exploration Geophysicists

    Dave Nichols

  46. Imaging complex geologic structure with single‐arrival Kirchhoff prestack depth migration

    Article • Geophysics, September 1997, Society of Exploration Geophysicists

    Dave Nichols

  47. Maximum energy traveltimes calculated in the seismic frequency band

    Article • Geophysics, January 1996, Society of Exploration Geophysicists

    Dave Nichols

  48. Several field data examples of dealiasing DMO

    Article • January 1996, Society of Exploration Geophysicists

    Dave Nichols

  49. Potentially Reducing Seismic Acquisition Costs by Dealiasing DMO Processing

    Article • January 1996, Society of Petroleum Engineers (SPE)

    Dave Nichols

  50. Moveout‐discriminating adaptive subtraction of multiples

    Article • January 1995, Society of Exploration Geophysicists

    Dave Nichols

  51. Amplitude‐preserved multiple suppression

    Article • January 1995, Society of Exploration Geophysicists

    Dave Nichols

  52. Dealiasing DMO: Good‐pass, bad‐pass, and unconstrained

    Article • January 1995, Society of Exploration Geophysicists

    Dave Nichols

  53. Maximum energy traveltimes calculated in the seismic frequency band

    Article • January 1994, Society of Exploration Geophysicists

    Dave Nichols

  54. Modeling elastic fields across irregular boundaries

    Article • Geophysics, September 1992, Society of Exploration Geophysicists

    Dave Nichols

  55. Interpolation beyond aliasing by (t,x)-domain PEFs

    Article • May 1991, EAGE Publications

    Dave Nichols

  56. Ambient seismic field in three dimensions

    Article • January 1989, Society of Exploration Geophysicists

    Dave Nichols

  57. Fundamentals of 3-D migration, Part 2

    Article • The Leading Edge, December 1987, Society of Exploration Geophysicists

    Dave Nichols

  58. Fundamentals of 3-D migration, Part 1

    Article • The Leading Edge, November 1987, Society of Exploration Geophysicists

    Dave Nichols