What are Recharge Wells?
A Recharge Well is the exact opposite of a conventional well. It pushes the surface water back into the groundwater system.
What is the process of execution?
- We drill hole upto the required depth by rotary drilling method or DTH drilling method from where ground water has to be extracted.
- After drilling, a steel/PVC pipe is lowered to the required depth.
- Then gravel is packed from top of the tubewell to fill the gap between drilled bore hole and pipe.
- We install an electric/diesel operated water pump.
- We drill another hole upto the required depth, which will be used as the recharge well. Then we connect both the wells by pipe and start the water pump. The hole receiving water is known as recharge well.
How can Recharge Wells be used?
Usually, a recharge well is lined with concrete rings that have perforations. These perforations let water seep from the sides. The rings line the recharge well from bottom to top with a steel or concrete ring closing it.
Rainwater that gushes down terrace drains, and surface water flowing in storm water drains, can be filtered, de-silted and recharged in open wells.
Another application of a recharge well is in oil and natural gas production. x Water and other substances can be injected into an oil-producing unit in order to maintain reservoir pressure, heat the oil or lower its viscosity, allowing it to flow to a producing well nearby.
A recharge well helps increase the groundwater table.
Which industries use Recharge Wells?
- Aquifer Recharge
- Oil and Gas
- Waste Disposal
Some projects where we have executed Recharge Wells
Executed Recharge Wells for Alpine- Samsung HCC JV for their Delhi Metro Rail project.