Mineral drilling or mineral exploration drilling is the most often useful in the mining industry. This particular process helps to ascertain the mineral composition of soil in diverse locations effectively. It is preliminary to most significant mining operations used to find mineral-rich drilling areas and ore deposits.
During the drilling process, geologists involve in analyzing the soil sample at various depths. It helps them determine if there is the presence of valuable minerals or other resources specifically along the drilling line.
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Best Known Applications of Diamond Drilling
Diamond core drilling minimizes incidents of spalling, eliminates fractures, and does not transfer vibrations to the surrounding structure.
- The most important and general application of core diamond concrete drilling is installing any electrical, plumbing, water pipelines, and air conditioning pipe fitting through the floors and walls.
- The drilling process can be done horizontally and vertically with the help of the drill bit. It is pretty suitable for operating in remote and restricted areas of the construction site.
- The diamond implemented drill bit is generally used in the exploration phase of the mining process. Diamond drilling extracts rock samples that geologists analyze to understand sub-surface geology.
Here, we will talk about the 3 primary drilling techniques that are mainly used in mining. It includes:
- Diamond Core Drilling
- Reverse Circulation Drilling
- Conventional Rotary Air or Mud Drilling
Now, let’s have a detailed discussion about all of these techniques:
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Diamond Core Drilling
Diamond drilling is known to be the most expensive and the most accurate form of mineral drilling. Anyone performing this method should have the necessary skills related to this technique; otherwise, there are vast chances of failure.
When compared to reverse circulation drilling, the cost per meter is very high in this case. It is also slower. In 12 hours, you can get depths of about 30 meters.
This is because the core rotation rate is very high, from 300-1200 rotations/minute. To avoid burning or polishing the bit in hard rock formulations, it again requires the right amount of weight on the bit.
Advantage of Diamond Drilling
The main advantage of diamond drilling London is that you would bring a material core to the surface. It will provide a more detailed mineral composition profile at almost every depth compared to the other drilling styles.
In this regard, there are 2 types of core drilling that you should know about, i.e., traditional and wireline. Rotary drilling is mainly used with a hollow core drill bit to capture a sample with conventional drilling.
After that, it is brought up to the drilling. The placement of samples again occurs in jars, and we took it back to the laboratory for analysis. Wireline coring is conducted with an ICB, which is explicitly passed through the drill bit.
Finally, it is overshot from the head. It involves fewer round trips, and its efficiency is more. However, it limits the size of the core. Irrespective of the method that is used, drilling is an art.
The driller needs to match the rotation and weight effectively to provide resistance. Also, it requires heavy equipment for a good repair.
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Reverse Circulation Drilling
The main advantage of reverse circulation drilling is that it provides a more accurate understanding of the soil composition at any particular depth. However, in this case, the cost is a little more per meter when compared to conventional drilling.
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It is a well-known method in South America and Australia. It is because, at these places, deep minerals are the most valuable export materials.
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Conventional Rotary Air or Mud Drilling
It is the most cost-effective drilling method. You can perform this in many different ways.
In this aspect, you should keep in mind that the primary goal of this drilling technique is to lift material to the surface. As a result, you can test it to ascertain the mineral composition.
Two common approaches to lifting are there that is air and mud. Mud is a thickened liquid compound that fills the hole and displaces the loosened material by drilling. After that, it is essential to take cuttings from the sidewall and test it in the lab to ascertain the mineral composition.
Drilling technique
The prominent challenge people encounter with this drilling technique is that it is inaccurate for mineral exploration drilling. You desire to know what specific minerals are present at each depth.
However, with this form of drilling, loose materials present above the cutting can fall down and ultimately lead to the contamination of the sample.
So, in this case, you would not be able to get a precise representation of the soil composition at that particular depth. However, if you are working with a vast area, it may be worth going for this method.
Wrapping Up:
After reading this blog post, we hope you have a clear idea about the effective drilling techniques used in mining.
