According to the country’s top drill rig companies, the normal tendency of many people nowadays is not to think so much about the working technology behind providing pure and safe drinking water. Not even the amount of work that needed to get done or the amount of effort that needed to be put in would be noticed.
While there is a good possibility that the vast majority of Australian homes nowadays obtain their water from their own private well, there is a good chance that they probably didn’t have to pay a contractor for that. Or that they might not be even around yet when the well was drilled.
But you have to admit, it is pretty impressive to watch a drilling rig in full action.
Below, we will give you an idea of how it works.
Drilling Rigs: How Do They Work?
A water well drilling rig is a large piece of machinery that can only be transported by vehicle to the site where the well will be drilled and set up. These pieces of equipment can be qualified either as a rotary driller (they use a rotating motion to be able to dig into the earth) or they could be pounders ( they make use of a heavyweight to punch a hole using a technique known as “cable drilling.”
A rotary drill rig may employ a variety of bits to work. Long cable bits, as well as interlocking steel bits, are the most common types. Every single one of them rotates in a clockwise direction to be able to bore through the ground and thus loosen up the soil a bit.
When the bit takes on its twisting action, the rock that is worked on is efficiently brought up to the surface. The drilling bits will remain cold enough by having mud or even water to cool the turning bit.
The objective of digging a water well is to reach the deep underground aquifer. However, this is not all there is. Drill rig companies can carry on digging below the water table. By taking things this way, they can make sure there is an adequate supply of water for the well and a long life for it.
The length of bedrock wells typically ranges between 100 and 500 feet long. Although, there are instances that they could go deeper than that.
Installing Well Casings
Casings are elongated pipes, usually made from steel or plastic material. They are used to line a new well to stop and keep it from collapsing while drilling work is in progress. In its absence, there runs the risk of contaminating the water below.
The annulus is a 2-inch gap between the casing and the good wall. For the remaining 20-feet before reaching the surface, this region will be filled with gravel and then get coated with cement. It will serve as a protection and will help in keeping pollutants and other unwanted materials/substances from reaching the surface of the well which may well contaminate the water supply.
These casings also protect the well from freezing during the extremely cold winter months. It is the time of the year in the country when temperatures could go below freezing point.
Although there are a handful of well-drilling companies that would mount the casing while their drilling work is in progress, others will do so only right after their drilling work is complete.
Keeping the Water Supply Free of Contaminants
Filters are imperative when it comes to keeping debris and other surface contaminants from reaching the water source, which is naturally located at the bottom of the well.
They are also responsible for ensuring that larger particles are not drawn near the water pump. A screen can be mounted at the bottom of the good casing for this purpose once the drilling work is completed and done.
At the bottom of the well, gravel, which is a natural filtration medium, can be taken advantage of for the same purpose, too.
Experience and Technology
Digging deep into the earth with shovels and buckets is a typical scene you will see when people of long ago would be digging for a water well.
But nowadays drill rig companies can use a wide array of techniques and methods if they want to see to it that their client-homeowners will have a reliable supply of water for years to come.