Enhancing Fold Coverage Representation Across Horizons Using Optimized Illumination Mapping in Undershooting Seismic Data Acquisition

In seismic modeling, an illumination map visually represents the distribution and strength of seismic waves in a subsurface region. This vital tool aids geophysicists and seismic interpreters in assessing the effectiveness of illuminating a specific subsurface target. Challenges in seismic acquisition design, such as obstacles rendering areas inaccessible, necessitate adjustments to the shot point. A case study illustrates the use of the undershooting method to overcome silting obstacles in the transition zone seismic survey. This involved relocating the source line 1.1 km from the receiver line, effectively navigating around impediments.

Following the source line adjustment, simulations are crucial to gauge the impact on data fold coverage at each horizon. The Illumination Map becomes instrumental in precisely depicting fold coverage for each horizon within the undershooting method. This visualization offers valuable insights into acquisition efficiency, ensuring comprehensive coverage and overcoming obstacles, exemplifying the significance of the undershooting method in seismic exploration.