When sonic drilling is used a high frequency vibration is sent down through the drill string to the drill bit. The vibrations cause the drill bit to vibrate and the vibrations will lead to the rock and soil materials falling away. This type of drilling is done by an operator who has to factor in the type of rock or soil being subjected to this style of drilling. The vibrations caused by the sonic drilling can be changed by the operator to suit the different types of soil and rock. Sonic drilling is easy to use and it is a safe technique to employ when drilling. This drilling technique is cost effective and there is less waste to clear away once the job is done. This type of drilling is also environmentally-friendly and can be completed quickly. Sonic drilling is assisted with a small amount of rotation which enables the drill bit to easily move through the earth regardless of the type of soil or rocks used.
What are the advantages and disadvantages of sonic or vibratory drilling?
- Sonic drilling can drill through almost all types of soil and rock.
- When using sonic drilling in soil 30m or less, the drilling is quick.
- Sonic drilling allows for limited contamination.
- Sealed exploratory soil samples can be extracted however this can slow down the process and make it more expensive.
- There is less environmental disturbance when using this type of drilling is used.
- Formation waters can be sampled while using sonic drilling.
- The sonic drilling machine is easy to operate.
- The process slows down the further down the drill goes.
- The depth of 200 metres is about as far down as the drilling can go.
- The drilling process can be expensive.
The reason for the effectiveness of this form of drilling is that the vibration caused by the drilling machine causes the soil surrounding the drill bit to become almost fluid like and simply fall away from the drill bit allowing the drilling process to take place faster leading to the drilling job being completed quickly.
When the drilling takes place in rock, the vibrations of the drill cause the rock to break and for dust to form. This allows the sonic drilling process to speed up and the job is completed quickly. This form of drilling is also very successful because the drill is not only vibrating but it is also moving up and down while vibrating as well as rotating at the same time.
Master Drilling offers sonic or vibratory drilling solutions worldwide with preference to the following countries: Peru, Chili, Brazil, Colombia, Ecuador, Argentina, Bolivia, Guatemala, United States of America, Canada, Mexico, Honduras, Nicaragua, China, India, Vietnam, Indonesia, Philippines, Russia, Kazakhstan, Australia, Papua New Guinea, Ghana, Zambia, Mozambique, Namibia, Botswana, Tanzania, DRC, Mali, Burkina Faso, Saudi Arabia, Zimbabwe, Kenia, Namibia , South Africa, Ireland, Poland, Finland, Sweden, Norwegian, Portugal, Italy, Bulgaria, Turkey and Malta.