Mitigating Airgun Seismic Interference on Phase-Sequenced Marine Vibrator Data

SUMMARY

Marine vibrators (MVs) have emerged as a promising alternative to traditional airgun arrays, offering precise signal control, reduced environmental impact, and a broad frequency range. However, seismic interference (SI) from nearby airgun surveys poses challenges during MV acquisition.

This study introduces a tailored SI mitigation strategy using an adaptive inversion-based de-blending algorithm designed to preserve the phase-sequencing patterns critical for accurate imaging. Through field test data with single-unit and double-unit MV configurations, we demonstrated that the proposed method effectively removes SI noise while maintaining the integrity of MV signals.

The results, validated through difference plots and FK spectra analysis, highlight the robustness of this approach in addressing mixed-source interference scenarios, enabling cleaner and more reliable seismic imaging for marine
vibrator acquisitions.