Three-dimensional high-resolution seismic imaging
at Hill AFB

• Study area - Operable Unit 2, Hill Air Force Base, Utah.
• Target - see a map of the top of the clay layer acting as a trap for the Dense Non-Aqueous Phase Liquid (DNAPL) contaminants.

Three-dimensional seismic work presents a very substantial and intensive effort and will result in a very large volume of seismic data. Careful planning of the study and testing is required in order to determine the optimal acquisition parameters ensuring achievement of the goals of imaging. We carry out such preparations by analyzing the 2-D data acquired on the site in 1998, by performing pre-acquisition modeling of the expected characteristics of the planned 3-D survey, and by developing the necessary software and data processing techniques.
 

Previous 2-D seismic study on the site

• First interim report
• Second interim report.
• Results of travel-time inversion using refracted arrivals.
• 2-D depth migrated seismic image of the target.

Planning of the experiment and pre-acquisition modeling

• Work plan
• One of the proposed acquisition patterns and common-midpoint coverage.
• Pre-acquisition modeling of expected reflection point coverage accounting for the topography of the target horizon.

References

• Three-dimensional seismic tomography

Contact information

• Alan Levander | Colin Zelt | Igor Morozov | Diana Dana