QUESTION
Is there any way to remove a small object blocking a borewell just below the casing pipe depth? Will taking video footage help?

Some rock from the uncased portion of the bore must have caused the obstruction. If not, loose material from the top must have seeped into the borewell through the annular space between the casing pipe and the surrounding formation. The first thing to do is to take the help of the driller to flush the bore well to remove the obstructions and test the yield once again. A suitable submersible pump can then be set up taking into account the pumping head and yield of the well for drawing water from the borewell.

Dr. R. Jagadiswara Rao (https://www.indiawaterportal.org/users/rjagadiswara)

Video clipping is not needed. Use a dummy tied with nylon rope and jerk the rope a few times to push down the filled in material. If this is not successful, then use the same drilling machine and flush / clean the bore well. If the block is due to collapsing nature then there is a need to insert the casing further down. A professional should be consulted for this.

A. Rajamohamed Ambalam (https://www.indiawaterportal.org/users/rajamohamed-ambalam)

Source: https://www.indiawaterportal.org/ask/5581

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11 July 2012