Whitepaper: 3D Reverse-time Shot Record Migration (RTM)

Press "play" below for a "tutorial" on our reverse-time migration (RTM). This video is narrated by WIT's CEO, Morgan Brown, and is excerpted from a talk given by Dr. Brown at the June, 2010 Denver Geophysical Society luncheon. It puts RTM into the context of other prestack depth migration methods, describes the algorithm in a step-by-step fashion, and illustrates RTM with two field data examples (Gulf Coast salt dome and Wyoming anticline). To view this tutorial at full-size, please visit ScreenCast.com.

WIT developed a shot record reverse-time migration (RTM) algorithm. Here are some algorithm highlights:

• Pseudospectral (Fourier) or finite-difference wave propagation
• Anti-aliased imaging condition is employed to preserve high frequency content and suppress artifacts.
• Can be run from topography (this can imply land topography, OBC/nodes, or 3D VSP).
• We can optionally apply shot consolidation to reduce runtime without sacrificing data coverage.
• Isotropic, VTI, HTI, or TTI capabilities
• Dense angle gathers (incidence or azimuth) for velocity update or attributes

Interested in reading more about WIT's WEM technology?

• We presented field data examples of WIT's RTM at the June, 2010 Denver Geophysical Society Luncheon. The presentation contains RTM examples from the Gulf Coast and Wyoming.

© 2012, Wave Imaging Technology, Inc.  |  All rights reserved  |  +1.281.556.5980  |  Contact   |