How to make borehole drill for Submersible Pump

How to Make a Borehole Drill for a Submersible Pump

Drilling a borehole for a submersible pump is a critical step in accessing underground water for residential, agricultural, or industrial use. The process requires proper planning, skilled execution, and the right equipment to ensure a reliable water source.

1. Site Selection:
Begin by conducting a hydrogeological survey to identify the most suitable location with sufficient groundwater availability. This helps determine the depth, yield, and quality of water.

2. Obtain Necessary Permits:
In many regions, permits from local authorities or water departments are required before drilling. Always ensure compliance with regulations.

3. Mobilize Drilling Equipment:
A rotary or percussion drilling rig is commonly used. The type of machine depends on the soil formation and required depth. Set up the rig securely at the selected location.

4. Begin Drilling:
Drill the borehole vertically to the required depth—often between 100 to 300 feet, depending on water table levels. Use drilling mud or water to cool the drill bit and flush out cuttings.

5. Install the Casing:
Once the desired depth is reached, insert a PVC or steel casing to prevent the borehole walls from collapsing. A well screen is placed at the water-bearing zone to allow water in and keep sand out.

6. Gravel Packing and Sealing:
Pour gravel between the casing and borehole wall for filtration. Seal the upper section with bentonite or cement grout to prevent surface contamination.

7. Develop the Borehole:
Flush the borehole using air or water to remove fine particles and improve water flow. This process helps clean and prepare the borehole for pumping.

8. Install the Submersible Pump:
Lower the submersible pump into the borehole to the appropriate depth, ensuring it stays below the static water level but above the bottom. Connect the electrical and discharge piping systems securely.

9. Test the System:
Run a test to check the water flow rate, pump performance, and water quality. Make any necessary adjustments before final commissioning.

Proper borehole drilling ensures long-lasting and efficient operation of the submersible pump, providing a reliable source of clean water. Always hire professionals or consult experts for best results.