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Sonic is an advanced form of drilling which employs the use of high-frequency, resonant energy generated inside the Sonic head to advance a core barrel or casing into subsurface formations. During drilling, the resonant energy is transferred down the drill string to the bit face at various Sonic frequencies.
Sonic drilling uses high-frequency vibration (resonance) to reduce friction and advance the drill string and bit where surrounding particles are either liquified (in loose materials) or fractured (in hard rock). Rotation can also be added when drilling in harder geologic formations.
Fast! Because sonic vibrations significantly reduce friction along the drill string, sonic drilling is 3-5 times faster (and sometimes more) compared to conventional drilling (depending on the soil). Drilling rates range up to 260 feet (80 m) or more per day.
A pneumatic isolation system inside the Sonic head prevents the resonant energy from transmitting to the drill rig and preferentially directs the energy down the drill string. The driller controls the resonant energy generated by the Sonic head’s oscillator to match the formation being encountered to achieve maximum drilling productivity.
Modern sonic drilling was developed in the 1980s by Canadian mechanical engineer Ray Roussy (Clancy, 2006). A sonic drilling rig appears very similar to a conventional rotary coring rig. The primary difference is the hydraulically powered drill head.
Sonic drilling is most often used when the drilling is difficult and the integrity of the core sample is extremely important. What makes sonic drilling work?
Sonic is an advanced form of drilling which employs the use of high-frequency, resonant energy generated inside the Sonic head to advance …
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In this paper, the focus is on energy harvesting from ambient ultra-sonic sound sources with the help of piezoelectric devices. Ultra-sonic sound is abundantly available in UV …
Sonic drilling is a soil penetration technique that strongly reduces friction on the drill string and drill bit due to liquefaction, inertia effects and a temporary reduction of porosity of the soil.
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PVDF film is placed in the cavity of sonic crystal and converts localized sound energy into electrical energy as much as possible. At the frequency of 4.2 kHz, the largest …
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A trial of sonic drilling on the Olympic Park commenced in May 2007 with a Boart Longyear Delta Base 320 (DB320) rig undertaking investigations around the proposed …
What is sonic drilling? Sonic drilling is a technique that significantly reduces friction on the drill string and drill bit by using energy resonance to affect the soil structure where it contacts the drill string. This combination makes penetrating …
OverviewTheory of sonics: applicationsBook chaptersElementary physical principlesDefinitionsFrictionCapacity and condensersNotes
• The Constantinesco synchronization gear, used on military aircraft in order to allow them to target opponents without damaging their own propellers.• Automatic gear• Sonic Drilling, was one of the first applications developed by Constantinescu. A sonic drill head works by sending high frequency resonant vibrations down the drill string to the drill bit, while the operator controls these f…
In this study, we have designed a phononic crystal fiber with different core sizes for central frequencies of 25 kHz, 31.5 kHz, and 40 kHz of 1/3 octave band because the …
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