Ultrasound-based irradiation of rock formations has attracted considerable attention as a technique for enhancing heavy-oil (high-viscosity crude oil) recovery from deep underground reservoirs. However, a unified theoretical framework for wave propagation and energy dissipation in these formatio...

Source: [Phys.org](https://phys.org/news/2026-06-ultrasound-propagation-porous-theory-distinct.html)

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