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Drill Point Solutions, Gaborone (2026)

25/07/2024

Borehole Development After Drilling

Borehole development is essential to ensure a clean and efficient water supply after drilling. Here's a brief overview of what it is, how it's done, and why it's important.

Borehole development involves cleaning and conditioning the borehole to remove debris, improve water flow, and stabilize the borehole walls.

It is done through a combination of the following steps;
🔹Surging: Forcing water or air down the borehole to dislodge and remove debris.
▫️Airlifting: Using air to lift water and debris to the surface.
🔹Flushing: Pumping clean water at high pressure to wash out debris.
▫️Chemical Treatment: Using chemicals to break down obstructive materials.

The Importance of Borehole Development

1. Improves Water Flow: Enhances natural water flow into the borehole.
2. Increases Efficiency: Ensures higher water yield with less effort.
3. Prevents Clogging: Removes fine particles and drilling fluids.
4. Enhances Longevity: Extends the borehole's lifespan.
5. Ensures Water Quality: Provides clean water for agricultural use.

Proper borehole development is crucial for sustainable and efficient water supply management.

Photos from Drill Point Solutions's post

22/07/2024

Yield Estimates During Drilling

Yield estimates measure the amount of water a borehole can produce over a set period. This information is crucial for determining whether the borehole can meet the water needs of crops and livestock and what pump capacity to install when equipping.

They are often conducted using a V-notch weir. Water is directed through the V-shaped notch, and the height of the water flowing over the notch is measured. This height is used to calculate the flow rate, providing an accurate estimate of the borehole’s yield.

Yield estimates are conducted at two key stages:

1. During Drilling: Each time water is struck, the yield is measured.
2. After Borehole Development: Once the borehole is cleaned and stabilized, a final yield measurement is taken to determine its final yield estimate .

Yield estimates ensure sustainable water use and prevent over-extraction. They help farmers plan their water usage to meet agricultural needs, inform decisions about which farming activities to engage in, and determine the appropriate pump capacity, preventing costly over-extraction.

Accurate yield estimates are vital for effective water resource management, ensuring that farmers can sustainably and efficiently use their boreholes.

Ensure your drill measures the borehole yield during drilling and after development