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Advice required on controlled blasting technique for pump stuck in borewell

Sir,

One of the bore in our apartment is 800 feet deep while the submersible motor is immersed only to a depth of  600ft. We intended to lower the motor from the existing 600ft to 720 ft, before lowering the motor we wish to ascertain the exact depth and water springs available in our borewell by inserting an underwater camera. Once the contractor started pulling the pump, it got stuck at 575ft and now they were neither able to pull up the pump nor push it down. The contractor told us that it may be stuck in between the rocks and suggested to use control blasting techniqe to Dis-engage the Delivery pipe(PVC) from the Submersible motor. Please advise us further action as it also involves some risk of damaging our building while using control blasting technique. Is there any other way to pull up the pump? 

I have gone through similiar kind of queries (http://www.indiawaterportal.org/ask/5374 , http://www.indiawaterportal.org/ask/5318) but need some advice on control blasting techniqe or any other proved techniqes.

Thanking you,

Avinash

+91 9900219029

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Comments

3. It is possible to release borewell pump without any damage

Sir, it is possible to release your borewell pump without any damage.

Please contact:
Saravana borewell fishing works,
Kunathur.(Tamil nadu)
9842204294
Prop:R.Sekaran.

2. Info

Dear Sir,

     Please find below the information required by you.

1. location of borewell?
 In BAngalore ,Electronic City Area


2. date of drilling?
 Approx 5 yrs back
 
3. method of drilling used?
NOT sure ..but it was done using a drill machines laden in lorries
 
4. casing used? if so, depth to which inserted and material used?
55ft  --------Material Used GI
 
5. distance from building to the borewell or surrounding structures?
It is in the Car Park area ....Height of 10ft between borewell to ceiling
 
6. any more information related to nearby subterranean structures (other borewells, septic tank) in the area?
 in 20 feet we have a new borewell that has come up 1 month back

Thanks & Regards,


Avinash

1. more information

Hi Avinash, 

Please provide the following info that will help the experts learn more regarding the background of the query.

1. location of borewell?

2. date of drilling?

3. method of drilling used?

4. casing used? if so, depth to which inserted and material used?

5. distance from building to the borewell or surrounding structures?

6. any more information related to nearby subterranean structures (other borewells, septic tank) in the area?

Do post the requested information as a reply comment,

Admin  

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