Borehole Drilling Quotations
How to know you not over charged when receiving Borehole Quotes? The Following are few tips to help you understand the price you are quoted when analysing borehole cost or purchasing one.
There are common questions often asked about the cost of borehole and much more. This is a sign of just how the geology of South Africa varies, ranging from the sedimentary rocks of the Karoo basin to the metamorphosed rocks of the Northern Cape, to the granite intrusions of the Cape Granite Suite.
It is therefore expected that Borehole Quotes differ in depth, in their construction, and in how they charge for drilling and more.
Depth is always the main determining factor when it comes to the Borehole Quotes. Most drill quotes are based on metres to be drilled. So, whether you are drilling 10m, 100m or 300m will have a significant bearing on the price.
The Drill depth in Borehole Quotes
The drill depth depends on the depth of the aquifer you are targeting. Therefore, a good knowledge of the area’s hydrogeology is essential. A sure way to waste money is to drill on and on without knowing exactly what you are targeting. Different drilling methods are required for different formations, and this also hugely affect Borehole Quotes cost. In some settings it’s possible to case off a few unconsolidated materials. Using a pipe to protect the open hole and then drill down using air percussion.
That is where the drill hammer breaks the rock, and the chips are blown up out of the borehole using compressed air.
The construction of a borehole contributes greatly to water-use costs.
Where there is deep weathering, or changes in formation competency, or lots of clays, Odex drilling is necessary. This method involves pulling down borehole casing during the drilling process. This keeps the borehole from collapsing and can also enable you to drill through hard formations.
Borehole Quote construction is another big contributor to cost. It is very important that a borehole is constructed appropriately.
Understand Borehole Quotes
Some tips to help you with quotes:
- Make sure you understand the items listed. If something isn’t clear, ask for clarification.
- Get to know other people in your area who have or had boreholes. What they tell you can be very valuable in determining Borehole Quotes.
- If you feel a quote is too high, get another one from a different company. Compare different companies and contractors. Check the quoted drill depth, the drill method, and the borehole construction to ensure the quotes are for the same things.
But, bear in mind that the cheapest option is not always the best option. You get what you pay for, and you want your borehole to last.