A pre-requisite to quality full-wave processing is state-of-the-art P-wave processing. ION now offers advanced P-wave marine ocean bottom processing services in isolation. We have developed tools and accumulated global experience to take on the most difficult ocean-bottom imaging projects.
Specific challenges in OBC data include eliminating noise unique to the sea floor environment. To eradicate the detrimental noise, our imaging team has developed the following techniques:
- Scholte waves
- Spikes and noise bursts
- Trapped guided waves
- Bubble energy
- Shear leakage
Other OBC/OBN-specific tools include up/down wave-field separation, a variety of summation algorithms, up/down deconvolution, and mirror imaging techniques.
Land Processing Algorithms
Although full-azimuth land acquisition has existed for years, it has not been fully exploited. We recently developed algorithms designed to take full advantage of the unique characteristics of orthogonal acquisition, including cross-spread noise attenuation, 5D interpolation, and Common Offset Vector Tile (COVT) imaging. Because offset vector tiles contain traces with a similar offset and azimuth distribution, the resulting volumes preserve azimuth and offset information through migration. This allows for post migration azimuthal velocity (AZIM) and amplitude (AVOA) analysis and production of migrated anisotropy attributes (velocity and amplitude). These complement stress analysis, fracture detection, AVO, and rock property characterization derived from full-wave data.
- Waveform Inversion Including Well Constraints, Anisotropy, and Attenuation - The Leading Edge (PDF)