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Understanding Seismic Drilling

Admin Leticia    ,   -

Understanding Seismic Drilling

Seismic drilling is also known as shot hole drilling. This is a kind of drilling that is conducted as part of seismic surveys of geological formation. In the said surveys, a series of controlled vibrations are being utilized in order to generate a map of the subsurface structures. With the help of such map, the team would be able to determine where they can find the deposits of usable materials and how these materials are accessible to the drilling equipment.

A seismic survey is imperative in gas and oil exploration. This is also used by different researchers, especially those who are after of mapping geologic formations for scientific purpose.


How Companies Benefit from It?

When doing seismic drilling, companies make use of a specially designed drill when digging a hole to the specific depth. Water and air drills are both available for such purpose and they are usually mounted on mobile platforms or sledges. With this, the team would be able to move the drill quickly in between locations. This is very critical especially when doing large surveys. The time required in setting up the drilling platform and stabilizing it can greatly add to the total time needed for the entire survey. This is why the team makes use of mobile drills whenever necessary.


The Drilling Process

After they finish sinking a hole, the team can start mounting the explosives inside. The explosives will be causing underground vibrations as soon as they go off. By using seismic equipment, they will follow the reflection and movement of the vibrations. This gathered information will help them in constructing a map of underground formations and features. The team for seismic drilling may consists of explosive experts, geologists, and other people who are trained in seismic surveys.

A permit should be acquired when doing the drilling. This is because the process can be disruptive and even cause problems for animals, plants, and people in the area. When applying for the permit, the applicant should be details by describing the area that they will be working in and the things they will be doing there. While they are on site, the members of the drilling team often follow a set of protocols set by the company to make sure that the site is safe. They should also be responsible in controlling waste materials in order to keep the site orderly and clean.

When there is a suggestion that a formation is viable, the members of the team can pinpoint the locations to drill wells. A company may opt to sink some wells for testing in order to confirm the findings before they start with their full-scale production on the actual site. The exploration and investigation can be costly, more so when companies will take into consideration that not all target in the site will result to usable deposits. There are that do not have any useful material. On the other hand, other deposits might be visible on a seismic survey but is unreachable due to the configuration or depth.