A Hybrid Harmonic Curve Model for Multi-Streamer Hydrophone Positioning in Seismic Exploration.

Area of Science:

• Marine geophysics
• Seismic exploration technology

Background:

• Accurate towed streamer positioning is crucial for reliable seismic imaging.
• Existing polynomial models struggle with high-curvature streamer paths, especially during turns.
• This leads to significant errors in seismic data interpretation.

Purpose of the Study:

• To develop a novel multi-streamer analytical positioning method using a hybrid harmonic function.
• To mitigate modeling errors inherent in polynomial methods for high-curvature streamer configurations.
• To enhance the accuracy and reliability of seismic imaging in dynamic marine environments.

Main Methods:

• Construction of a mathematical model based on a hybrid harmonic function for 3D streamer coordinates.
• Algorithmic implementation detailing the model, error equation derivation, and multi-sensor fusion.
• Validation using both simulated and field data to assess performance against polynomial models.

Main Results:

• The harmonic model improved simulation accuracy by 35.5% (no error) and 27.2% (with error) in turning scenarios.
• Field data showed an 18.1% improvement in accuracy for the harmonic model during turns.
• Performance was comparable to polynomial models in straight-line streamer scenarios.

Conclusions:

• The proposed hybrid harmonic function model effectively reduces positioning errors in high-curvature and turning scenarios.
• This advancement offers improved accuracy for seismic imaging in complex marine exploration settings.
• The method provides a more robust alternative to traditional polynomial models for towed streamer positioning.