Optimization of drilling processes for oil and gas and geothermal wells requires the effective
use of mechanical energy for the destruction of rocks. When constructing a well, an …

The genesis of clutch noise, encompassing squeaks, chatter, shudders, or judders,
predominantly arises from friction-induced vibrations. As time progresses, the degradation of …

Torsional oscillations can pose a significant challenge in automatic transmissions, including
those stemming from instabilities induced by friction in the clutch system during shifts …

The critical factors that affect bottomhole stick–slip vibrations during vertical drilling
operations are thoroughly investigated and analyzed in this research. Influential factors …

The occurrence of downhole high-frequency torsional oscillations (HFTO) can lead to the
significant damage of drilling tools and can adversely affect drilling efficiency. Therefore …

Applying Health Management (HM) and specifically Condition Monitoring (CM) techniques
is necessary to maintain the healthy condition of the system. Machine Learning (ML), which …

Vibrations caused by stick-slip, which are common in rotary drilling systems, have a major
effect on drilling efficiency. They also seriously damage equipment and lower hole quality. In …

The shock absorption intensifier is a downhole drilling tool, which is utilized to generate high
pressure water jet while suppresses the drill string vibration. Field tests have shown the …