Elastic Drilling String for Percussive Impact Energy Storage

The patent applies dynamics by making the drilling string itself the elastic element that dynamically stores and releases energy. The drilling string alternates between elastic compression during upward motion and energy release during downward motion, creating a dynamic system that enhances percussion effect while distributing stress throughout the string rather than concentrating it in a single hammer component, thereby improving both drilling speed and tool lifespan

The patent changes the physical state and energy parameters of the drilling string by utilizing its elastic properties. The string is elastically compressed to store potential energy, then this energy is released to generate percussive impact. This parameter change approach transforms the drilling string from a passive transmission element to an active energy storage and release mechanism, enhancing rock-breaking efficiency while reducing wear on specific components

The patent applies universality by making the drilling string serve multiple functions: it transmits rotational motion from the surface, transmits axial compressive force, and simultaneously acts as the elastic energy storage element. By integrating these functions into the existing drilling string rather than adding separate components, the system achieves complex rock-breaking efficiency enhancement without proportionally increasing device complexity

The drilling string serves itself as the elastic element, utilizing its own inherent elastic properties to store and release energy. The system does not require external or additional elastic components - the drilling string itself performs the energy storage function, thereby avoiding the complexity that would arise from adding separate elastic elements while still achieving improved rock-breaking efficiency