Bore well casing

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Manjunath

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Location of Borewell: Horamavu Agara ,Bangalore North ,Bangalore Dist,India
Dug using: Hydraulic Rig Driller (61/2 inch)

1) Borewell was drilled using a Dia of : 6" 1/2 inch by hydraulic rig
2) MS Casing Pipe(2.5mm) was installed till 33feet and outer safety PVC 10 inch installed upto 13ft
3) 380ft first water source stuck, with muddy water certified as 3 inch water yield with silt mix.

Driller suggested as to insert slot / blank casing for entire drilled length(400 ft). We ignored the advice of driller(due high cost), when we opened the bore to install the motor, was surprised by seeing that motor (submersible) getting stopped @ 60ft. This is due to accumulation of silt from the bottom or side unsure of this.

Please advise:

1) Should I go for slot / blank casing till 400 ft? after cleaning borwell by rig.

2) Should I go for a new borewell?

3) Suggest best option which is the economical.
 

Speedbump

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That's not enough info to really make a call, but if the well caved in to just 60 feet, I would say the driller knew what he was talking about.

One thing about drilling wells. The best expert is the guy who has been drilling in that same area for lots of years. He has pretty much seen it all and knows the ins and outs of his business. I would listen to him.

bob...
 
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