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  1. ELASTIC DISPERSION AND ATTENUATION ANISOTROPY OF CLAY IN SHALES

    Article • Geophysics, October 2025, Society of Exploration Geophysicists

    Professor Colin M Sayers

  2. Critical porosity and the elastic properties of rocks

    Article • The Leading Edge, June 2025, Society of Exploration Geophysicists

    Professor Colin M Sayers

  3. Characterization of stress‐dependent microcrack compliance and orientation distribution in anisotropic crystalline rocks

    Article • Geophysical Prospecting, August 2024, Wiley

    Professor Colin M Sayers

  4. Comparison of elastic anisotropy in the Middle and Upper Wolfcamp Shale, Midland Basin

    Article • Geophysical Prospecting, March 2024, Wiley

    Professor Colin M Sayers

  5. Stress‐induced anisotropy in Gulf of Mexico sandstones and the prediction of in situ stress

    Article • Geophysical Prospecting, February 2024, Wiley

    Professor Colin M Sayers

  6. Elastic properties of unconsolidated sandstones of interest for carbon storage

    Article • Geophysical Prospecting, November 2023, Wiley

    Professor Colin M Sayers

  7. The effect of clay and contacts between sand grains on the elastic properties of sandstones

    Article • Geophysical Prospecting, February 2023, Wiley

    Professor Colin M Sayers

  8. Elastic wave velocities in a granitic geothermal reservoir

    Article • Geophysical Prospecting, October 2022, Wiley

    Professor Colin M Sayers

  9. Elastic frame moduli in a sandstone reservoir used for underground CO2 storage

    Article • August 2022, Society of Exploration Geophysicists

    Professor Colin M Sayers

  10. Anisotropy parameters for fractured shales

    Article • August 2022, Society of Exploration Geophysicists

    Professor Colin M Sayers

  11. Corrigendum to “Elastic properties of fractures in transversely isotropic media” [Journal of Applied Geophysics 197 (2022) 104527]

    Article • Journal of Applied Geophysics, April 2022, Elsevier

    Professor Colin M Sayers

  12. Elastic properties of fractures in transversely isotropic media

    Article • Journal of Applied Geophysics, February 2022, Elsevier

    Professor Colin M Sayers

  13. Elastic anisotropy of the Marcellus Shale

    Article • Geophysical Prospecting, December 2021, Wiley

    Professor Colin M Sayers

  14. Porosity variation of elastic wave velocities in clean sandstones

    Article • Geophysical Prospecting, September 2021, Wiley

    Professor Colin M Sayers

  15. Seismic petrophysics applied to the Bakken Formation, North Dakota

    Article • September 2021, Society of Exploration Geophysicists

    Professor Colin M Sayers

  16. The effect of spatial distribution of clay platelets on the anisotropy of clay in shales

    Article • September 2021, Society of Exploration Geophysicists

    Professor Colin M Sayers

  17. The SEAM Barrett model: Strengths and weaknesses

    Article • Geophysics, August 2021, Society of Exploration Geophysicists

    Professor Colin M Sayers

  18. Contribution of crystal orientation and grain boundary compliance to low shear velocity observed near base of polar ice sheets

    Article • Geophysical Journal International, July 2021, Oxford University Press (OUP)

    Professor Colin M Sayers

  19. Porosity dependence of elastic moduli of snow and firn

    Article • Journal of Glaciology, March 2021, Cambridge University Press

    Professor Colin M Sayers

  20. Mechanical properties of grain contacts in unconsolidated sands

    Article • Geophysics, March 2021, Society of Exploration Geophysicists

    Professor Colin M Sayers

  21. Seismic Inversion for Risk Reduction in Drilling and Production in Unconventional Reservoirs

    Article • October 2020, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  22. Predicting drilling performance in unconventional reservoirs using seismic inversion

    Article • September 2020, Society of Exploration Geophysicists

    Professor Colin M Sayers

  23. Fracture characterization from seismic data in the presence of multiple vertical fracture sets

    Article • September 2020, Society of Exploration Geophysicists

    Professor Colin M Sayers

  24. Orthorhombic analysis of the SEAM Phase II model

    Article • September 2020, Society of Exploration Geophysicists

    Professor Colin M Sayers

  25. Effect of variations in microstructure on clay elastic anisotropy

    Article • Geophysics, January 2020, Society of Exploration Geophysicists

    Lennert D den Boer, Professor Colin M Sayers

  26. Rock physics of the Wolfcamp Formation, Delaware Basin

    Article • Geophysics, October 2019, Society of Exploration Geophysicists

    Professor Colin M Sayers

  27. Elastic anisotropy of clay in shales

    Article • August 2019, Society of Exploration Geophysicists

    Professor Colin M Sayers

  28. Fracture characterization in the Delaware Basin using wide-azimuth seismic data

    Article • August 2019, Society of Exploration Geophysicists

    Professor Colin M Sayers

  29. Seismic inversion for engineering applications in unconventional reservoirs

    Article • August 2019, Society of Exploration Geophysicists

    Professor Colin M Sayers

  30. The impact of different clay minerals on the anisotropy of clay matrix in shale

    Article • Geophysical Prospecting, June 2019, Wiley

    Professor Colin M Sayers

  31. A predictive anisotropic rock-physics model for estimating elastic rock properties of unconventional shale reservoirs

    Article • The Leading Edge, May 2019, Society of Exploration Geophysicists

    Professor Colin M Sayers

  32. Pore-Pressure Prediction in the Permian Basin Using Seismic Prestack Inversion

    Article • January 2019, American Association of Petroleum Geologists (AAPG)

    Professor Colin M Sayers

  33. Rock physics of unconventional reservoirs

    Article • August 2018, Society of Exploration Geophysicists

    Professor Colin M Sayers

  34. A model of shales as a soft fluid-saturated clay matrix with inclusions of stiff clay minerals

    Article • Journal of Geophysical Research Solid Earth, July 2018, American Geophysical Union (AGU)

    Professor Colin M Sayers, Lennert D den Boer

  35. Increasing contribution of grain boundary compliance to polycrystalline ice elasticity as temperature increases

    Article • Journal of Glaciology, July 2018, Cambridge University Press

    Professor Colin M Sayers

  36. Elastic anisotropy of polycrystalline ice with transversely isotropic and orthotropic symmetry

    Article • Geophysical Journal International, July 2018, Oxford University Press (OUP)

    Professor Colin M Sayers

  37. Seismic data conditioning and orthotropic rock-physics-based inversion of wide-azimuth P-wave seismic data for fracture and total organic carbon characterization in a north Kuwait unconventional reservoir

    Article • Geophysics, July 2018, Society of Exploration Geophysicists

    Professor Colin M Sayers

  38. Erratum to ``Grain boundary compliance and ultrasonic velocities in pure copper undergoing intergranular creep'' [Int. J. Solids Struct. 96 (2016) 400–408]

    Article • International Journal of Solids and Structures, January 2018, Elsevier

    Professor Colin M Sayers

  39. Seismic Inversion for Engineering Applications in Unconventional Reservoirs

    Article • November 2017, EAGE Publications

    Professor Colin M Sayers

  40. Characterization of fluid-flow anisotropy in a carbonate reservoir using AVAZ inversion of wide-azimuth seismic data

    Article • August 2017, Society of Exploration Geophysicists

    Professor Colin M Sayers, Edan Gofer

  41. Rock physics of the Wolfcamp Formation, Delaware Basin

    Article • August 2017, Society of Exploration Geophysicists

    Professor Colin M Sayers

  42. Constructing a discrete fracture network constrained by seismic inversion data

    Article • Geophysical Prospecting, May 2017, Wiley

    Professor Colin M Sayers

  43. Grain boundary compliance and ultrasonic velocities in pure copper undergoing intergranular creep

    Article • International Journal of Solids and Structures, October 2016, Elsevier

    Professor Colin M Sayers

  44. The elastic anisotropy of clay minerals

    Article • Geophysics, September 2016, Society of Exploration Geophysicists

    Professor Colin M Sayers, Lennert D den Boer

  45. Geomechanical model for the Horn River Formation based on seismic AVA inversion

    Article • September 2016, Society of Exploration Geophysicists

    Professor Colin M Sayers, Edan Gofer

  46. Seismic data conditioning for AVOA analysis: Case study from a north Kuwait unconventional reservoir

    Article • September 2016, Society of Exploration Geophysicists

    Professor Colin M Sayers, Edan Gofer

  47. Orthotropic rock-physics based inversion for fracture and total organic carbon (TOC) characterization from azimuthal P-wave seismic survey: Case study from a northern Kuwait unconventional reservoir

    Article • September 2016, Society of Exploration Geophysicists

    Professor Colin M Sayers

  48. The effects of roughness and offset on fracture compliance ratio

    Article • Geophysical Journal International, February 2016, Oxford University Press (OUP)

    Professor Colin M Sayers

  49. Introduction to this special section: Resource plays II: Geophysics

    Article • The Leading Edge, December 2015, Society of Exploration Geophysicists

    Professor Colin M Sayers

  50. Sensitivity of P- and S-impedance to the presence of kerogen in the Eagle Ford Shale

    Article • The Leading Edge, December 2015, Society of Exploration Geophysicists

    Professor Colin M Sayers

  51. Application of prestack orthotropic AVAz inversion for fracture characterization of a deep carbonate reservoir in northern Kuwait

    Article • The Leading Edge, December 2015, Society of Exploration Geophysicists

    Professor Colin M Sayers

  52. Rock physics of the Eagle Ford Shale

    Article • August 2015, Society of Exploration Geophysicists

    Professor Colin M Sayers

  53. AVAZ interpretation using anisotropic rock physics

    Article • August 2015, Society of Exploration Geophysicists

    Professor Colin M Sayers

  54. Anisotropy estimate for the Horn River Basin from sonic logs in vertical and deviated wells

    Article • The Leading Edge, March 2015, Society of Exploration Geophysicists

    Professor Colin M Sayers

  55. Elastic anisotropy of the Middle Bakken Formation

    Article • Geophysics, January 2015, Society of Exploration Geophysicists

    Professor Colin M Sayers

  56. Rock Physics Model of the Eagle Ford Shale

    Article • January 2015, American Association of Petroleum Geologists (AAPG)

    Professor Colin M Sayers

  57. Rock Physics Model of the Eagle Ford Shale

    Article • January 2015, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  58. Sensitivity of the elastic anisotropy and seismic reflection amplitude of the Eagle Ford Shale to the presence of kerogen

    Article • Geophysical Prospecting, September 2014, Wiley

    Professor Colin M Sayers

  59. Recent advances in the characterization of unconventional reservoirs with wide-azimuth seismic data

    Article • August 2014, Society of Exploration Geophysicists

    Professor Colin M Sayers

  60. Seismic reservoir characterization for unconventional reservoirs using orthorhombic AVAZ attributes and stochastic rock physics modeling

    Article • August 2014, Society of Exploration Geophysicists

    Professor Colin M Sayers

  61. Shale anisotropy and the elastic anisotropy of clay minerals

    Article • August 2014, Society of Exploration Geophysicists

    Professor Colin M Sayers

  62. Sonic anisotropy of the Lower Eagle Ford Shale

    Article • August 2014, Society of Exploration Geophysicists

    Professor Colin M Sayers

  63. Elastic anisotropy of the Middle Bakken formation

    Article • August 2014, Society of Exploration Geophysicists

    Professor Colin M Sayers

  64. Direction dependence of fracture compliance induced by slickensides

    Article • Geophysics, July 2014, Society of Exploration Geophysicists

    Professor Colin M Sayers

  65. The effect of kerogen on the AVO response of organic-rich shales

    Article • The Leading Edge, December 2013, Society of Exploration Geophysicists

    Professor Colin M Sayers

  66. A new, fully integrated method for seismic geohazard prediction ahead of the bit while drilling

    Article • The Leading Edge, October 2013, Society of Exploration Geophysicists

    Professor Colin M Sayers

  67. The effect of kerogen on the AVO response of organic-rich shales

    Article • August 2013, Society of Exploration Geophysicists

    Professor Colin M Sayers

  68. Recent Advances in the Characterization of Unconventional Reservoirs with Wide-Azimuth Seismic Data

    Article • August 2013, Society of Exploration Geophysicists

    Professor Colin M Sayers

  69. The effect of kerogen on the elastic anisotropy of organic-rich shales

    Article • Geophysics, March 2013, Society of Exploration Geophysicists

    Professor Colin M Sayers

  70. Seismic characterization of reservoirs with asymmetric fractures

    Article • Geophysics, March 2013, Society of Exploration Geophysicists

    Professor Colin M Sayers

  71. Introduction: Rock Physics for Reservoir Exploration, Characterisation and Monitoring

    Article • Geophysical Prospecting, February 2013, Wiley

    Professor Colin M Sayers

  72. Seismic characterization of naturally fractured reservoirs using amplitude versus offset and azimuth analysis

    Article • Geophysical Prospecting, January 2013, Wiley

    Professor Colin M Sayers

  73. Guiding Drilling by Look Ahead Using Seismic and LWD Data

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

    Professor Colin M Sayers

  74. The effect of anisotropy on the Young's moduli and Poisson's ratios of shales

    Article • Geophysical Prospecting, November 2012, Wiley

    Professor Colin M Sayers

  75. Inversion for asymmetric fracture parameters using synthetic AVOA data

    Article • September 2012, Society of Exploration Geophysicists

    Professor Colin M Sayers

  76. Pore-pressure estimation ahead of the bit while drilling by seismic and well data integration

    Article • September 2012, Society of Exploration Geophysicists

    Professor Colin M Sayers

  77. Rapid 1D/3D inversion of shallow resistivity multipole data: Examples in archaeological prospection

    Article • Geophysics, May 2012, Society of Exploration Geophysicists

    Alain TABBAGH, Professor Colin M Sayers

  78. Drilling Adjacent to Salt Bodies: Definition of Mud Weight Window and Pore Pressure Using Numerical Models and Fast Well Planning Tool

    Article • January 2012, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  79. Characterizing production-induced anisotropy of fractured reservoirs having multiple fracture sets

    Article • Geophysical Prospecting, December 2011, Wiley

    Professor Colin M Sayers

  80. Introduction to this special section: Physics of rocks

    Article • The Leading Edge, December 2011, Society of Exploration Geophysicists

    Professor Colin M Sayers

  81. Rock physics-based relations for density and S-velocity versus P-velocity in deepwater subsalt Gulf of Mexico shales

    Article • The Leading Edge, December 2011, Society of Exploration Geophysicists

    Professor Colin M Sayers

  82. A Comprehensive Study of Sanding Rate From a Gas Field: From Reservoir to Completion, Production, and Surface Facilities

    Article • SPE Journal, June 2011, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  83. An introduction to this special section: Shales

    Article • The Leading Edge, March 2011, Society of Exploration Geophysicists

    Professor Colin M Sayers

  84. Seismic characterization of fractured reservoirs: Inversion for fracture parameters illustrated using synthetic AVOA data

    Article • January 2011, Society of Exploration Geophysicists

    Professor Colin M Sayers

  85. Seismic characterization of fractured reservoirs: A resolution matrix approach

    Article • January 2011, Society of Exploration Geophysicists

    Professor Colin M Sayers

  86. Velocity‐density relations for deepwater subsalt Gulf of Mexico shales

    Article • January 2011, Society of Exploration Geophysicists

    Professor Colin M Sayers

  87. Using Tomographic Seismic Velocities to Understand Subsalt Overpressure Drilling Risks in the Gulf of Mexico

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

    Professor Colin M Sayers

  88. Introduction to this special section: Tight gas sands

    Article • The Leading Edge, December 2010, Society of Exploration Geophysicists

    Professor Colin M Sayers

  89. Sensitivity of velocities to overpressure within heterogeneous tight gas sand reservoirs

    Article • The Leading Edge, December 2010, Society of Exploration Geophysicists

    Professor Colin M Sayers

  90. An introduction to this special section: CO2 sequestration

    Article • The Leading Edge, February 2010, Society of Exploration Geophysicists

    Professor Colin M Sayers

  91. Geophysics Under Stress

    Article • January 2010, Society of Exploration Geophysicists

    Professor Colin M Sayers

  92. The effect of anisotropy on the Young's moduli and Poisson's ratios of shales

    Article • January 2010, Society of Exploration Geophysicists

    Professor Colin M Sayers

  93. Dipole Sonic Log Calibration using Walkaway VSP data

    Article • January 2010, Society of Exploration Geophysicists

    Professor Colin M Sayers

  94. Characterization of microseismic data in gas shales using the radius of gyration tensor

    Article • January 2010, Society of Exploration Geophysicists

    Professor Colin M Sayers

  95. Introduction to this special section: Seismic modeling

    Article • The Leading Edge, May 2009, Society of Exploration Geophysicists

    Professor Colin M Sayers

  96. The effect of mineralization on the ratio of normal to tangential compliance of fractures

    Article • Geophysical Prospecting, May 2009, Wiley

    Professor Colin M Sayers

  97. The use of effective medium theories for seismic wave propagation and fluid flow in fractured reservoirs under applied stress

    Article • Geophysical Journal International, April 2009, Oxford University Press (OUP)

    Professor Colin M Sayers

  98. Seismic characterization of reservoirs containing multiple fracture sets

    Article • Geophysical Prospecting, March 2009, Wiley

    Professor Colin M Sayers

  99. Determination of in‐situ stress and rock strength using borehole acoustic data

    Article • January 2009, Society of Exploration Geophysicists

    Professor Colin M Sayers

  100. Rock properties in low-porosity/low-permeability sandstones

    Article • The Leading Edge, January 2009, Society of Exploration Geophysicists

    Professor Colin M Sayers

  101. Introduction to this special section—Rock physics

    Article • The Leading Edge, January 2009, Society of Exploration Geophysicists

    Professor Colin M Sayers

  102. The sensitivity of seismic waves to the normal and shear compliance of fractures

    Article • January 2009, Society of Exploration Geophysicists

    Professor Colin M Sayers

  103. A Comprehensive Study of Sanding Rate From Gas Field: From Reservoir, Completion, Production, to Surface Facilities

    Article • January 2009, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  104. Determination of Rock Strength Using Advanced Sonic Log Interpretation Techniques

    Article • January 2009, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  105. Remote Real-Time Well Monitoring and Model Updating Help Optimize Drilling Performance and Reduce Casing Strings

    Article • SPE Drilling & Completion, September 2008, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  106. The elastic properties of carbonates

    Article • The Leading Edge, August 2008, Society of Exploration Geophysicists

    Professor Colin M Sayers

  107. An introduction to this special section: Carbonates

    Article • The Leading Edge, August 2008, Society of Exploration Geophysicists

    Professor Colin M Sayers

  108. Fractured Reservoirs

    Article • July 2008, Wiley

    Professor Colin M Sayers

  109. Introduction to this special section—Shale geophysics

    Article • The Leading Edge, June 2008, Society of Exploration Geophysicists

    Professor Colin M Sayers

  110. Estimating the hydrocarbon volume from elastic and resistivity data: A concept

    Article • The Leading Edge, June 2008, Society of Exploration Geophysicists

    Professor Colin M Sayers

  111. The effect of low aspect ratio pores on the seismic anisotropy of shales

    Article • January 2008, Society of Exploration Geophysicists

    Professor Colin M Sayers

  112. The effect of near‐wellbore yield on elastic wave velocities in sandstones

    Article • January 2008, Society of Exploration Geophysicists

    Professor Colin M Sayers

  113. The use of effective medium theories for seismic wave propagation and fluid flow in fractured reservoirs under applied stress

    Article • January 2008, Society of Exploration Geophysicists

    Professor Colin M Sayers

  114. Pre-drill pore pressure study for a high temperature well in the Gulf of Mexico using reprocessed fit-for-purpose seismic velocities

    Article • November 2007, Society of Exploration Geophysicists

    Professor Colin M Sayers

  115. Modeling the Mechanical and Phase Change Stability of Wellbores Drilled in Gas Hydrates by the Joint Industry Participation Program (JIP) Gas Hydrates Project, Phase II

    Article • November 2007, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  116. Introduction to this special section: Subsalt exploration

    Article • The Leading Edge, November 2007, Society of Exploration Geophysicists

    Professor Colin M Sayers

  117. Calibrating the Mechanical Properties and In-Situ Stresses Using Acoustic Radial Profiles

    Article • November 2007, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  118. Effects of borehole stress concentration on elastic wave velocities in sandstones

    Article • International Journal of Rock Mechanics and Mining Sciences, October 2007, Elsevier

    Professor Colin M Sayers

  119. Introduction to this special section: Fractures

    Article • The Leading Edge, September 2007, Society of Exploration Geophysicists

    Professor Colin M Sayers

  120. Asymmetry in the time-lapse seismic response to injection and depletion

    Article • Geophysical Prospecting, September 2007, Wiley

    Professor Colin M Sayers

  121. From pore-pressure prediction to reservoir characterization: A combined geomechanics-seismic inversion workflow using trend-kriging techniques in a deepwater basin

    Article • The Leading Edge, May 2007, Society of Exploration Geophysicists

    Professor Colin M Sayers

  122. An introduction to reservoir geomechanics

    Article • The Leading Edge, May 2007, Society of Exploration Geophysicists

    Professor Colin M Sayers

  123. Introduction to this special section: Geomechanics

    Article • The Leading Edge, May 2007, Society of Exploration Geophysicists

    Professor Colin M Sayers

  124. Fluid-dependent shear-wave splitting in a poroelastic medium with conjugate fracture sets

    Article • Geophysical Prospecting, May 2007, Wiley

    Professor Colin M Sayers

  125. Modeling the Mechanical and Phase Change Stability of Wellbores Drilled in Gas Hydrates by the Joint Industry Participation Program (JIP) Gas Hydrates Project, Phase II

    Article • January 2007, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  126. Seismic characterization of reservoirs containing multiple fracture sets

    Article • January 2007, Society of Exploration Geophysicists

    Professor Colin M Sayers

  127. Comment on the Reply on “Theta map: Edge detection in magnetic data” ()

    Article • Geophysics, January 2007, Society of Exploration Geophysicists

    Professor Colin M Sayers

  128. Calibrating The Mechanical Properties and In-Situ Stresses Using Acoustic Radial Profiles

    Article • January 2007, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  129. Well-constrained seismic estimation of pore pressure with uncertainty

    Article • The Leading Edge, December 2006, Society of Exploration Geophysicists

    Professor Colin M Sayers

  130. An introduction to velocity-based pore-pressure estimation

    Article • The Leading Edge, December 2006, Society of Exploration Geophysicists

    Professor Colin M Sayers

  131. Introduction to this special section: Geohazards and pore-pressure prediction

    Article • The Leading Edge, December 2006, Society of Exploration Geophysicists

    Professor Colin M Sayers

  132. Sensitivity of time-lapse seismic to reservoir stress path

    Article • Geophysical Prospecting, September 2006, Wiley

    Professor Colin M Sayers

  133. Optimize Drilling and Reduce Casing Strings Using Remote Real-Time Well Hydraulic Monitoring

    Article • August 2006, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  134. Predicting Reservoir Compaction and Casing Deformation in Deepwater Turbidites Using a 3D Mechanical Earth Model

    Article • August 2006, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  135. Sensitivity of time-lapse seismic to reservoir stress path

    Article • Geophysical Prospecting, May 2006, Wiley

    Professor Colin M Sayers

  136. Time‐lapse seismic response to injection and depletion

    Article • January 2006, Society of Exploration Geophysicists

    Professor Colin M Sayers

  137. Effects of borehole stress concentration on elastic wave velocities in sandstones

    Article • January 2006, Society of Exploration Geophysicists

    Professor Colin M Sayers

  138. Well‐constrained seismic estimation of pore pressure with uncertainty

    Article • January 2006, Society of Exploration Geophysicists

    Professor Colin M Sayers

  139. Trend‐kriged seismic velocities to predict pore pressure and to model effective stress for reservoir characterization in a deepwater basin

    Article • January 2006, Society of Exploration Geophysicists

    Professor Colin M Sayers

  140. Optimize Drilling and Reduce Casing with Real-Time Well Hydraulic Monitoring

    Article • January 2006, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  141. Predicting Reservoir Compaction and Casing Deformation in Deepwater Turbidites using a 3D Mechanical Earth Model

    Article • January 2006, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  142. Sensitivity of elastic-wave velocities to stress changes in sandstones

    Article • The Leading Edge, December 2005, Society of Exploration Geophysicists

    Professor Colin M Sayers

  143. Introduction to this special section: Rocks under stress

    Article • The Leading Edge, December 2005, Society of Exploration Geophysicists

    Professor Colin M Sayers

  144. Seismic anisotropy of shales

    Article • Geophysical Prospecting, September 2005, Wiley

    Professor Colin M Sayers

  145. Regional trends in undercompaction and overpressure in the Gulf of Mexico

    Article • January 2005, Society of Exploration Geophysicists

    Professor Colin M Sayers

  146. Sensitivity of elastic wave velocities to reservoir stress path

    Article • January 2005, Society of Exploration Geophysicists

    Professor Colin M Sayers

  147. Integrating Diverse Measurements to Predict Pore Pressure With Uncertainties While Drilling

    Article • September 2004, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  148. Tidal‐driven constraints for time‐lapse reservoir monitoring

    Article • January 2004, Society of Exploration Geophysicists

    Professor Colin M Sayers

  149. Seismic anisotropy of shales: What determines the sign of Thomsen's delta parameter?

    Article • January 2004, Society of Exploration Geophysicists

    Professor Colin M Sayers

  150. Monitoring production‐induced stress changes using seismic waves

    Article • January 2004, Society of Exploration Geophysicists

    Professor Colin M Sayers

  151. Integrating Diverse Measurements to Predict Pore Pressure With Uncertainties While Drilling

    Article • January 2004, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  152. Seismic pore pressure prediction with uncertainty using a probabilistic mechanical earth model

    Article • January 2003, Society of Exploration Geophysicists

    Professor Colin M Sayers

  153. Whole earth 4D: Reservoir monitoring geomechanics

    Article • January 2003, Society of Exploration Geophysicists

    Professor Colin M Sayers

  154. Use of reflection tomography to predict pore pressure in overpressured reservoir sands

    Article • January 2003, Society of Exploration Geophysicists

    Professor Colin M Sayers

  155. Calibrated Predrill Pore Pressure Prediction from 3D Seismic for the Cocuite Field, Veracruz Basin

    Article • January 2003, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  156. Pore Pressure Prediction for the Cocuite Field, Veracruz Basin

    Article • September 2002, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  157. Fluid-dependent shear-wave splitting in fractured media

    Article • Geophysical Prospecting, July 2002, Wiley

    Professor Colin M Sayers

  158. Seismic pore-pressure prediction using reflection tomography and 4-C seismic data

    Article • The Leading Edge, February 2002, Society of Exploration Geophysicists

    Professor Colin M Sayers

  159. The effect of pore fluid on the stress‐dependent elastic wave velocities in sandstones

    Article • January 2002, Society of Exploration Geophysicists

    Professor Colin M Sayers

  160. Pore Pressure Prediction for the Cocuite Field, Veracruz Basin

    Article • January 2002, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  161. Stress-dependent elastic anisotropy of sandstones

    Article • Geophysical Prospecting, January 2002, Wiley

    Professor Colin M Sayers

  162. Predrill pore-pressure prediction using 4-C seismic data

    Article • The Leading Edge, September 2001, Society of Exploration Geophysicists

    Professor Colin M Sayers

  163. Predrill pore pressure prediction using 4C seismic data

    Article • January 2001, Society of Exploration Geophysicists

    Professor Colin M Sayers

  164. Azimuth-dependent AVO in reservoirs containing non-orthogonal fracture sets

    Article • Geophysical Prospecting, January 2001, Wiley

    Professor Colin M Sayers

  165. Enhanced Seismic Pore-Pressure Prediction

    Article • January 2001, Society of Petroleum Engineers (SPE)

    Professor Colin M Sayers

  166. A feasibility study for pore-pressure prediction using seismic velocities in the offshore Nile Delta, Egypt

    Article • The Leading Edge, October 2000, Society of Exploration Geophysicists

    Professor Colin M Sayers

  167. A finite‐difference injection approach to modeling seismic fluid flow monitoring

    Article • Geophysics, May 2000, Society of Exploration Geophysicists

    Professor Colin M Sayers

  168. Sensitivity of reflection seismic data to oil-column height in high-porosity sandstones

    Article • Geophysical Prospecting, March 2000, Wiley

    Professor Colin M Sayers

  169. Signal preserving swell noise attenuation using point receiver seismic data

    Article • January 2000, Society of Exploration Geophysicists

    Professor Colin M Sayers

  170. Predrill pore pressure prediction using reflection tomography

    Article • January 2000, Society of Exploration Geophysicists

    Professor Colin M Sayers

  171. Azimuth‐dependent tuning of seismic waves reflected from fractured reservoirs

    Article • Geophysics, July 1999, Society of Exploration Geophysicists

    Professor Colin M Sayers

  172. Analysis of multiazimuthal VSP data for anisotropy and AVO

    Article • Geophysics, July 1999, Society of Exploration Geophysicists

    Professor Colin M Sayers

  173. Anisotropic velocity analysis using marine 4C seismic data

    Article • January 1999, Society of Exploration Geophysicists

    Professor Colin M Sayers

  174. Stress‐dependent seismic anisotropy of shales

    Article • Geophysics, January 1999, Society of Exploration Geophysicists

    Professor Colin M Sayers

  175. A finite‐difference injection approach to modeling of seismic fluid flow monitoring

    Article • January 1999, Society of Exploration Geophysicists

    Professor Colin M Sayers

  176. Misalignment of the orientation of fractures and the principal axes forPandSwaves in rocks containing multiple non-orthogonal fracture sets

    Article • Geophysical Journal International, May 1998, Oxford University Press (OUP)

    Professor Colin M Sayers

  177. Long-wave seismic anisotropy of heterogeneous reservoirs

    Article • Geophysical Journal International, March 1998, Oxford University Press (OUP)

    Professor Colin M Sayers

  178. Fractured reservoir characterisation using multi‐azimuthal walkaway VSPs

    Article • January 1998, Society of Exploration Geophysicists

    Professor Colin M Sayers

  179. Seismic reservoir monitoring on Gullfaks

    Article • The Leading Edge, September 1997, Society of Exploration Geophysicists

    Professor Colin M Sayers

  180. Seismic traveltime analysis for azimuthally anisotropic media: Theory and experiment

    Article • Geophysics, September 1997, Society of Exploration Geophysicists

    Professor Colin M Sayers

  181. Determination of anisotropic velocity models from walkaway VSP data acquired in the presence of dip

    Article • Geophysics, May 1997, Society of Exploration Geophysicists

    Professor Colin M Sayers

  182. Azimuthal variation in AVO response for fractured gas sands

    Article • Geophysical Prospecting, January 1997, Wiley

    Professor Colin M Sayers

  183. Seismic traveltime analysis for azimuthally anisotropic media

    Article • January 1997, Society of Exploration Geophysicists

    Professor Colin M Sayers

  184. Stress sensitivity of sandstones

    Article • International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, December 1996, Elsevier

    Professor Colin M Sayers

  185. 10. Microcrack-Induced Seismic Anisotropy

    Article • January 1996, Society of Exploration Geophysicists

    Professor Colin M Sayers

  186. Simplified anisotropy parameters for transversely isotropic sedimentary rocks

    Article • Geophysics, November 1995, Society of Exploration Geophysicists

    Professor Colin M Sayers

  187. Anisotropic velocity analysis1

    Article • Geophysical Prospecting, May 1995, Wiley

    Professor Colin M Sayers

  188. Stress-dependent elastic wave velocities in shales

    Article • International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, April 1995, Elsevier

    Professor Colin M Sayers

  189. Microcrack-induced elastic wave anisotropy of brittle rocks

    Article • Journal of Geophysical Research Atmospheres, March 1995, American Geophysical Union (AGU)

    Professor Colin M Sayers

  190. Seismic anisotropy of fractured rock

    Article • Geophysics, January 1995, Society of Exploration Geophysicists

    Professor Colin M Sayers

  191. Stress‐dependent seismic anisotropy of shales

    Article • January 1995, Society of Exploration Geophysicists

    Professor Colin M Sayers

  192. Reflection moveout in azimuthally anisotropic media

    Article • January 1995, Society of Exploration Geophysicists

    Professor Colin M Sayers

  193. Ultrasonic and neutron diffraction characterization of texture in an inhomogeneously rolled titanium plate

    Article • Materials Science and Engineering A, April 1994, Elsevier

    Professor Colin M Sayers

  194. P-wave propagation in weakly anisotropic media

    Article • Geophysical Journal International, March 1994, Oxford University Press (OUP)

    Professor Colin M Sayers

  195. The elastic anisotrophy of shales

    Article • Journal of Geophysical Research Atmospheres, January 1994, American Geophysical Union (AGU)

    Professor Colin M Sayers

  196. Propagation of ultrasound through hydrating cement pastes at early times

    Article • Advanced Cement Based Materials, October 1993, Elsevier

    Professor Colin M Sayers

  197. Ultrasonic propagation through hydrating cements

    Article • Ultrasonics, May 1993, Elsevier

    Professor Colin M Sayers

  198. Elastic anisotropy of short-fibre reinforced composites

    Article • International Journal of Solids and Structures, January 1992, Elsevier

    Professor Colin M Sayers

  199. Fluid flow in a porous medium containing partially closed fractures

    Article • Transport in Porous Media, June 1991, Springer Science + Business Media

    Professor Colin M Sayers

  200. A simple technique for finding effective elastic constants of cracked solids for arbitrary crack orientation statistics

    Article • International Journal of Solids and Structures, January 1991, Elsevier

    Professor Colin M Sayers

  201. Orientation of microcracks formed in rocks during strain relaxation

    Article • International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, October 1990, Elsevier

    Professor Colin M Sayers

  202. Stress-induced ultrasonic anisotrophy in Berea sandstone

    Article • International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, October 1990, Elsevier

    Professor Colin M Sayers

  203. The crystal structure of iron in the Earth's inner core

    Article • Geophysical Journal International, October 1990, Oxford University Press (OUP)

    Professor Colin M Sayers

  204. Ultrasonic anisotropy of metal-matrix composites

    Article • Research in Nondestructive Evaluation, September 1990, Taylor & Francis

    Professor Colin M Sayers

  205. Stress-induced fluid flow anisotropy in fractured rock

    Article • Transport in Porous Media, June 1990, Springer Science + Business Media

    Professor Colin M Sayers

  206. Inversion of ultrasonic wave velocity measurements to obtain the microcrack orientation distribution function in rocks

    Article • Engineering Fracture Mechanics, January 1990, Elsevier

    Professor Colin M Sayers

  207. Ultrasonic Anisotropy of Metal-Matrix Composites

    Article • Research in Nondestructive Evaluation, January 1990, Taylor & Francis

    Professor Colin M Sayers

  208. Ultrasonic Anisotropy of Metal-Matrix Composites

    Article • Research in Nondestructive Evaluation, January 1990, Taylor & Francis

    Professor Colin M Sayers

  209. Seismic anisotropy of the inner core

    Article • Geophysical Research Letters, March 1989, American Geophysical Union (AGU)

    Professor Colin M Sayers

  210. Elastic Wave Propagation in Anisotropic Microcracked Rocks

    Article • January 1989, Elsevier

    Professor Colin M Sayers

  211. Stress-induced ultrasonic wave velocity anisotropy in fractured rock

    Article • Ultrasonics, November 1988, Elsevier

    Professor Colin M Sayers

  212. Inversion of ultrasonic wave velocity measurements to obtain the microcrack orientation distribution function in rocks

    Article • Ultrasonics, March 1988, Elsevier

    Professor Colin M Sayers

  213. Orientation of olivine in dunite from elastic wave velocity measurements

    Article • Geophysical Research Letters, October 1987, American Geophysical Union (AGU)

    Professor Colin M Sayers

  214. Thermal contraction stresses in cemented tungsten carbide composites

    Article • Materials Science and Engineering, July 1987, Elsevier

    Professor Colin M Sayers

  215. Elastic wave anisotropy in the upper mantle

    Article • Geophysical Journal International, February 1987, Oxford University Press (OUP)

    Professor Colin M Sayers

  216. The elastic anisotropy of polycrystalline aggregates of zirconium and its alloys

    Article • Journal of Nuclear Materials, February 1987, Elsevier

    Professor Colin M Sayers

  217. Angular dependent ultrasonic wave velocities in aggregates of hexagonal crystals

    Article • Ultrasonics, September 1986, Elsevier

    Professor Colin M Sayers

  218. Effect of non-alignment of specimen and texture axes on the measurement of stress using the ultrasonic SH wave technique

    Article • Journal of Physics D Applied Physics, August 1986, Institute of Physics Publishing

    Professor Colin M Sayers

  219. Phenomenology of antiferromagnetic metal-insulator transition in 3d transition metal dichalcogenides

    Article • Solid State Communications, March 1986, Elsevier

    Professor Colin M Sayers

  220. Angular dependence of the ultrasonic SH wave velocity in rolled metal sheets

    Article • Journal of the Mechanics and Physics of Solids, January 1986, Elsevier

    Professor Colin M Sayers

  221. Ultrasonic SH wave velocity in textured aluminium plates

    Article • Ultrasonics, September 1985, Elsevier

    Professor Colin M Sayers

  222. Scattering of ultrasound by minority phases in polycrystalline metals

    Article • Wave Motion, January 1985, Elsevier

    Professor Colin M Sayers

  223. Texture independent determination of residual stress in polycrystalline aggregates using Rayleigh waves

    Article • Journal of Physics D Applied Physics, December 1984, Institute of Physics Publishing

    Professor Colin M Sayers

  224. Impurity promoted intergranular fracture

    Article • Philosophical Magazine B, November 1984, Taylor & Francis

    Professor Colin M Sayers

  225. Hydrogen adsorption on platinum

    Article • Surface Science, August 1984, Elsevier

    Professor Colin M Sayers

  226. The strain distribution in anisotropic polycrystalline aggregates subjected to an external stress field

    Article • Philosophical Magazine A, August 1984, Taylor & Francis

    Professor Colin M Sayers

  227. The influence of stress on the principal polarisation directions of ultrasonic shear waves in textured steel plates

    Article • Journal of Physics D Applied Physics, July 1984, Institute of Physics Publishing

    Professor Colin M Sayers

  228. The measurement of residual stress in textured steel using an ultrasonic velocity combinations technique

    Article • Ultrasonics, July 1984, Elsevier

    Professor Colin M Sayers

  229. Ultrasonic properties of transducer backings

    Article • Ultrasonics, March 1984, Elsevier

    Professor Colin M Sayers

  230. Hydrogen adsorbed on nickel, palladium and platinum powders

    Article • Journal of the Chemical Society Faraday Transactions 1 Physical Chemistry in Condensed Phases, January 1984, Royal Society of Chemistry

    Professor Colin M Sayers

  231. Vibrational modes of hydrogen adsorbed on the (110) surface of nickel

    Article • Surface Science, January 1984, Elsevier

    Professor Colin M Sayers

  232. Comments on ‘‘Kramers–Kronig relationships and wave propagation in composites’’ by A. I. Beltzer [J. Acoust Soc. Am. 73, 355 (1983)]

    Article • The Journal of the Acoustical Society of America, September 1983, Acoustical Society of America (ASA)

    Professor Colin M Sayers

  233. Ultrasonic velocity and attenuation in an epoxy matrix containing lead inclusions

    Article • Journal of Physics D Applied Physics, July 1983, Institute of Physics Publishing

    Professor Colin M Sayers

  234. Inelastic neutron scattering from adsorbates

    Article • Reports on Progress in Physics, July 1983, Institute of Physics Publishing

    Professor Colin M Sayers

  235. The vibration spectrum of hydrogen bound by nickel catalysts

    Article • Journal of Physics C Solid State Physics, April 1983, Institute of Physics Publishing

    Professor Colin M Sayers

  236. Coincidence of bounds for some elastic moduli of polycrystals with [100] fibre texture

    Article • Philosophical Magazine A, March 1983, Taylor & Francis

    Professor Colin M Sayers

  237. Use of neutron diffraction texture measurements to establish a model for calculation of ultrasonic velocities in highly oriented austenitic weld material

    Article • Journal of Applied Physics, February 1983, American Institute of Physics

    Professor Colin M Sayers

  238. Ultrasonic velocities in anisotropic polycrystalline aggregates

    Article • Journal of Physics D Applied Physics, November 1982, Institute of Physics Publishing

    Professor Colin M Sayers

  239. The propagation of ultrasound in porous media

    Article • Ultrasonics, September 1982, Elsevier

    Professor Colin M Sayers

  240. Local moments and magnetic ordering in transition metals

    Article • Zeitschrift für Physik B Condensed Matter and Quanta, June 1982, Springer Science + Business Media

    Professor Colin M Sayers

  241. The vibration spectrum of hydrogen bound by molybdenum sulphide catalysts

    Article • Journal of Physics C Solid State Physics, November 1981, Institute of Physics Publishing

    Professor Colin M Sayers

  242. Neutron scattering studies of textures in mild steel

    Article • NDT International, October 1981, Elsevier

    Professor Colin M Sayers

  243. On the stability of crystal structures in the 3d transition metal series

    Article • Journal of Physics F Metal Physics, May 1981, Institute of Physics Publishing

    Professor Colin M Sayers

  244. Ultrasonic velocity dispersion in porous materials

    Article • Journal of Physics D Applied Physics, March 1981, Institute of Physics Publishing

    Professor Colin M Sayers

  245. Theory of hydrogen vibrations on transition metal surfaces

    Article • Surface Science, September 1980, Elsevier

    Professor Colin M Sayers

  246. On the propagation of ultrasound in highly concentrated mixtures and suspensions

    Article • Journal of Physics D Applied Physics, February 1980, Institute of Physics Publishing

    Professor Colin M Sayers

  247. On the use of pair interactions to model vibrations of an adatom on a transition-metal surface

    Article • Journal of Physics C Solid State Physics, October 1979, Institute of Physics Publishing

    Professor Colin M Sayers

  248. The vibration frequency of an atom at the surface of a tight binding metal

    Article • Surface Science, March 1979, Elsevier

    Professor Colin M Sayers

  249. Magnetic properties of liquid metal alloys

    Article • Advances In Physics, February 1979, Taylor & Francis

    Professor Colin M Sayers

  250. The Einstein temperature of itinerant ferromagnets

    Article • Journal of Physics F Metal Physics, January 1979, Institute of Physics Publishing

    Professor Colin M Sayers

  251. Correlation effects in the cohesive properties of the transition metals

    Article • Journal of Physics F Metal Physics, July 1977, Institute of Physics Publishing

    Professor Colin M Sayers

  252. On the soft X-ray emission from Fe-Al alloys

    Article • Journal of Physics F Metal Physics, March 1977, Institute of Physics Publishing

    Professor Colin M Sayers

  253. Screening of non-transition element impurities in iron

    Article • Journal of Physics F Metal Physics, October 1976, Institute of Physics Publishing

    Professor Colin M Sayers

  254. Soft X-ray emission study of the screening of Al impurities in Fe

    Article • Journal of Physics F Metal Physics, November 1975, Institute of Physics Publishing

    Professor Colin M Sayers