Passive seismic method measures wave fieldsSpectraseis has developed a new type of passive seismic method leveraging the low-frequency ambient waves that are present everywhere in the Earth's crust, continuously generated by natural events such as ocean wave movements and micro-tectonic activity. The company has performed extensive research and development to discover how these waves are shaped into specific wave-field patterns by hydrocarbon reservoirs. They discovered that source-driven oscillations and shear wave attenuation are two of the mechanisms at play. Advances in high-sensitivity broadband instrumentation and signal processing methods have now...

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