Understanding Seismic Anisotropy in Exploration and Exploitation

by Leon Thomsen

Duration: Two days

Intended Audience: Intermediate and Advanced levels

Prerequisites (Knowledge/Experience/Education Required): The course is designed to be followed by anyone with a few years of experience in conventional reflection seismic analysis.

Summary:
All rock masses are seismically anisotropic, but we generally ignore this in our seismic acquisition, processing, and interpretation. The anisotropy nonetheless does affect our data, in ways that limit the effectiveness with which we can use it, so long as we ignore it. In this short course, we will understand why this inconsistency between reality and practice has been so successful in the past, and why it will be less successful in the future, as we acquire better seismic data (especially including vector seismic data), and correspondingly higher expectations of it. We will further understand how we can modify our practice so as to more fully realize the potential inherent in our data, through algorithms, which recognize the fact of seismic anisotropy.

Who should attend:
This is an excellent opportunity for all geophysicists to learn how a fundamental property of rocks impacts all our data and how to deal with it.

Learner Outcomes:

  • Discuss with colleagues the physical principles of seismic anisotropy, with examples
  • Discuss with colleagues the application of these principles to P-wave imaging, specifically including the effects on arrival times
  • Discuss with colleagues the application of these principles to physical characterization of the subsurface (specifically including the effects on P-wave reflection amplitudes), using anisotropic rock physics
  • Discuss with colleagues the application of these principles to S-wave data, specifically including shear wave splitting
  • Discuss with colleagues the application of these principles to Converted-wave data, specifically including C-wave splitting

Instructor Biography:
Leon Thomsen