Advertisement

Forward Modelling of Seismic Properties

  • James P. Verdon
Chapter
Part of the Springer Theses book series (Springer Theses)

Abstract

In Chap. 5 I generated geomechanical models to simulate the effects of pore pressure changes on the stress field in and around a reservoir. I wish to model the seismic properties of these models, and developed in Chap. 6 a rock physics model capable of mapping changes in stress into changes in seismic velocity. In this chapter I develop a workflow to generate elastic models based on the geomechanical simulations. These elastic models can then be used to make predictions about changes to seismic properties using seismic modelling tools such as ray tracing or finite difference simulation. This work was conducted as part of the IPEGG project. Doug Angus and I developed a workflow, \(SeisModel^{\copyright},\) specific to the IPEGG modelling tools capable of reading the output from the MORE-ELFEN simulator and computing the seismic properties on a regularised grid. I will begin this chapter by outlining this workflow.

Keywords

Crack Density Dynamic Stiffness Shear Wave Splitting Microseismic Event Initial Stress Condition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Hatchell P, Bourne S (2005) Rocks under strain: Strain-induced time-lapse time shifts are observed for depleting reservoirs. The Leading Edge 24:1222–1225CrossRefGoogle Scholar
  2. Angus DA, Verdon JP, Fisher QJ, Kendall JM (2009) Exploring trends in microcrack properties of sedimentary rocks: An audit of dry core velocity-stress measurements. Geophysics 74(5):E193–E203CrossRefGoogle Scholar
  3. Brown RJS, Korringa J (1975) On the dependence of the elastic properties of a porous rock on the compressibility of the pore fluid. Geophysics 40(4):608–616CrossRefGoogle Scholar
  4. Chapman M (2003) Frequency-dependent anisotropy due to meso-scale fractures in the presence of equant porosity. Geophys Prospect 51:369–379CrossRefGoogle Scholar
  5. Prioul R, Bakulin A, Bakulin V (2004) Non-linear rock physics model for estimation of 3D subsurface stress in anisotropic formations: Theory and laboratory verification. Geophysics 69:415–425CrossRefGoogle Scholar
  6. Verdon JP, Angus DA, Kendall JM, Hall SA (2008) The effects of microstructure and nonlinear stress on anisotropic seismic velocities. Geophysics 73(4):D41–D51CrossRefGoogle Scholar
  7. Olofsson B, Probert T, Kommedal JH, Barkved O (2003) Azimuthal anisotropy from the Valhall 4C 3D survey. Leading Edge 22:1228–1235CrossRefGoogle Scholar
  8. Herwanger J (2007) Linking geomechanics and seismics: stress effects on time-lapse seismic data. EAGE distinguished lecturer program LondonGoogle Scholar

Copyright information

© Springer Verlag-Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.School of Earth SciencesUniversity of BristolBristolUK

Personalised recommendations