Urgent Redressal Required :Bikaner, Rajasthan - 380 ft Tubwell Failure - Issues ?
Submitted by Manu Dahiya on October 27, 2009 - 22:52
My father has a farm at Distt. Kulayat in Bikaner, Rajasthan. He dug a borewell at the farm couple of years ago & there was good water supply, however when the supply suddenly stopped, somebody recommended he uses acid to desilt the pipe & when that was done there was massive supply of water for a day thereafter huge silt & rocks came out & the pump stopped. Hypothesis was that the acid actually destroyed the metal pipes. Later, they could not dig out the motor or the pipes from the site.
Other neighboring farms have dug borewells & got water at 270-370 ft levels.
Basis these experiences, we recently dug a new borewell at the site near to the earlier one, with the following stats:
1) Borewell was drilled using a inch by hydraulic rig.
2) Hole was dug first 14" & later for 22" wide.
3) 11" Cement pipe with round holes of 4mm :800 holes/16ft pipe were installed till 380feet.
5) We filled in concrete/gravel for the filtration in between the cement pipe & the earth wall.
6) Post piping, we checked for water level & we struck it at 270ft first (Self testing by putting in a plastic wire with heavy wt)
7) A Hydrologist report of this area states that there is a good water zone between 270-370ft
After this installation, we tried to pump up water but to our disdain there was very less water discharge. It was almost 10% ofthe expectation & not sufficient for farming puposes.
Can anybody help? What should we do? What could be the problem?
My father is thinking about taking out the delivery pipe & using Acid to clear the way to check for water again. Will this work? We need an urgent addressal to this situation.
Kindly provide the contact information of suitable consultants who will be able to help us resolve the issue favorably.
Contact me at manudahiya@gmail.com or call at +91 9896974676.
Comments
1. Dear Manu Dahiya, Please
Dear Manu Dahiya,
Please provide the following info:
With regards,
Sudhindra Mohan Sharma
Hydro-geologist
Indore
Madhya Pradesh
2. Dear Manu, It is not
Dear Manu,
With regards,
A. Raja Mohamed
Geophysicist
Coastal Energy private Limited
Chennai. 600 006
3. To the Readers Since I did
To the Readers
Since I did not find time to open the portal due to preoccupation I am pasting the communication I had with Mr. Manu Daya through my blackberry service for your views and comments.
Regards,
A. Rajamohamed Ambalam
Hello Dr.,
I got your email contact from IndiaWater portal. I am reaching out to you with reg to a very urgent problem at hand for borewell. Request pl have a glance at this & give us your expert opinion.
____________________________________________________________________
My father has a farm at Distt. Kulayat in Bikaner, Rajasthan. He dug a borewell at the farm couple of years ago & there was good water supply, however when the supply suddenly stopped, somebody recommended he uses acid to desilt the pipe & when that was done there was massive supply of water for a day thereafter huge silt & rocks came out & the pump stopped. Hypothesis was that the acid actually destroyed the metal pipes. Later, they could not dig out the motor or the pipes from the site.
Other neighboring farms have dug borewells & got water at 270-370 ft levels.
Basis these experiences, we recently dug a new borewell at the site near to the earlier one, with the foll stats:
1) Borewell was drilled using a inch by hydraulic rig.
2) Hole was dug first 14" & later for 22" wide.
3) 11" Cement pipe with round holes of 4mm :800 holes/16ft pipe were installed till 380feet.
5) We filled in concrete/gravel for the filtration in between the cement pipe & the earth wall.
6) Post piping, we checked for water level & we struck it at 270ft first (Self testing by putting in a plastic wire with heavy wt)
7) A Hydrologist report of this area states that there is a good water zone between 270-370ft
After this installation, we tried to pump up water but to our disdain there was very less water discharge. It was almost 10% ofthe expectation & not sufficient for farming puposes.
What should we do? What could be the problem? My father is thinking about taking out the delivery pipe & using Acid to clear the way to check for water again. Will this work? We need an urgent addressal to this sitaution. Pl help.
You can reply by email or call my father, Mr.RS Dahiya at +91 9896974676.
Alternatively, it would be great if you can let me know what would be a good time to call you. Your mobile no. listed on the site is 09443619352?
Thanks very much in advance!
Best regards,
Manu.
bismi1234786@gmail.com
to Manu
show details Oct 28 (2 days ago)
Dear sir,
Have you cleaned with air compressor.
Kindly clean with high pressure air compressor for about minimum 6 hours.
Please report back or call me in the same no
Regards.
A.RAJAMOHAMED
Sent from BlackBerry® on Airtel
From: Manu Dahiya <manudahiya@gmail.com>
Date: Tue, 27 Oct 2009 22:55:46 +0530
To: <bismi1234786@gmail.com>
Subject: Seeking urgent advise on Borewell Problem
Manu Dahiya
to me
show details Oct 28 (2 days ago)
Thank you for the quick reply!
I have spoken with my Dad who's in Bikaner & he'll try & find out if there is an air compressor available in that area. People there have suggested him to use 2 quintals of Sulphuric Acid later washed down by many ltrs of water to clear the pipe as there may be clay stuck in the way. The area is prone to such problems (clay) & thus the suggestion. Our only worry is that whether the Acid will cause any damage to the cement pipes.
I have passed him your contact no., & he shall call you for a quick suggestion on what approach to take once he finds out about the air compressor availability.
Really appreciate your help.
Best Regards,
Manu.
A.Rajamohamed Ambalam
to Manu
show details Oct 28 (2 days ago)
Sulphuric acid is o.k. it will do no harm to cement pipe. air compressor is good as it will develop the bore well and you will get more water.
Acid may cause problem to your pump and motor.
You put the acid and as well clean the bore with air compressor. for more yield.
If truck mounted air compressor not available follow the traditional practice of pouring the acid and pumping.
Regards,
A. Raja Mohamed Ambalam
Manu Dahiya
to me
show details 9:04 PM (15 hours ago)
Thanks again for the reply.
Today, we took out the pump & motor and then set in sulphuric acid + water in the pipes.
We will put back the pump/motor & delivery pipe in to the well to check for water tomorrow. With God's grace we should be able to get water!
ps: My father was telling me that there is lot of sulphur in that area & that first water recvd from the pump was also hot water. Is this ok? Do you see an indication of this with our problem?
Best Regards,
Manu.
bismi1234786@gmail.com
to Manu
show details 9:11 PM (15 hours ago)
It is not sulphur. It is sulphur mixed with iron.
No problem. You first send the pumped water to some ten feet by ten feet with height one feet bunded field then do the irrigation.
Iron mix will evaporate and warm water will cool down
Best wishes
Sent from BlackBerry® on Airtel
A. RAJAMOHAMED AMBALAM GEOPHYSICIST COASTAL ENERGY Pvt Ltd, CHENNAI +919443619352
4. restoring siltation in tube well-Bikaner
Dear Manu Dahiya
I fully agree with your assessment of the problem of the old well. The well assembly over time would have degraded and the acid treatment worsened the situation.
In the recently drilled well the siltation problem could probably due to improper gravel pack. There are several examples of bulging clay zones preventing the gravel to completely fill the slotted portion. An easy way of assessing this is to calculate the volume that was available for filling and the volume of gravel actually used.
This situation van be fully restored by using a rig and jetting the well by pumping in water around the slotted portion. This will allow the gravel pack to reorganize, pack itself well around the slotted portion and thereby reduce the inflow of silt initially and fully over time. Such problems are not unusual and one need to have patience to get things right.
Wishing you all the best.
Best Regards
K.A.S.Mani
5. Jetted the well with Acid & Water to no avail!
Dear Mr. Mani,
Thanks for the reply.
At this moment, any bit of positivity will help us. We tried the Acid+Water solution 2 days ago, but all we got was red clay & silt from the borewell. Yesterday we pumped in many ltrs water into the borewell from a nearby borewell (which by the way is hardly 500mts away) & then tried pumping, again we lot of clay mixed water & eventually minimal water discharge from our own borewell.
What do you think is the problem? What else should we do?
Our last option would be to dig a borewell again, do you think it is required? Also, this time we want to do it right, & hence request if you know any experts in that area who can guide us on the digging. Can you suggest any person we can contact, if even over the phobe it will help!!
Thanks!
Manu.
6. What to do to make your next well successful?
Dear Manu,
I am sorry to learn from your email that your new well could not get you water. Your first well was yielding water until there was development of incrustation that clogged the entry of water. Although use of sulphuric acid helped to remove the incrustation, it damaged the pipes leading to well failure.
According to "Drilling: the manual of methods, applications, and management" by the Australian Drilling Industry Training Committee Limited, acids are recommended to dissolve hard encrusting materials, including Fe and Mn oxides and carbonate deposits that get deposited over a period of time after the construction of the well. Out of the different acids used, sulfamic acid is considered the best. It occurs as a dry granular material that produces a strong acid when mixed with water. It should not be confused with sulphuric acid, which should never be used in well cleaning, as it is corrosive and forms insoluble products.
Although sulfamic acid is marginally more expensive than muriatic acid (industrial hydrochloric acid) and is less aggressive, sulfamic acid is relatively safe to handle and easily transported in its dry form. It is used as a pH-reducing agent to remove carbonate encrustations. But if the incrustation is made of Fe and Mn oxides, muriatic acid is preferred.
In the case of your new well, the cement casing pipes you used must be made up of Phenochem cement, which is resistant to even 92% sulphuric acid. Although use of sulphuric acid has not damaged the pipes, no purpose was served by acid cleaning, as such cleaning is meant to remove incrustations developed in course of time after well construction, but not in new wells for removal of silt.
The rock formations met in your area belong to the Marwar Supergroup consisting of Nagaur Group of Lower Cambrian Age consisting of sandstone, gritty and pebbly sandstone, brick-red sandstone, siltstone with greenish clayey bands and underlain by Bilara Group consisting of limestone and dolomite. The failure of your new well is because of encountering shale with greenish clay of poor yield at the depth where your neighbours got sandstone with good yield.
When you construct a new well, I suggest you take up well logging to know how self potential (SP) and resistivity change with depth. From such a log, you can know exactly where water-bearing standstone and possibly cavernous limestone/dolomite occur to place accurately the well screens against the aquifer material and blank screen against clayey material.
Good luck
Rao
Dr. R. Jagadishwara Rao Professor of Geology Retired Sri Venkateswara University Tirupati, AP 517502, India rjagadiswara@gmail.com
7. We are digging a new borewell
Dear Dr. Rao,
You were right, the acid & water jetting didn't help improve the situation. We are now contemplating digging a new borewell.
Ques: What is well logging? And how do we acheive that?
We will take due care to call Hydrologists from nearby area to check the new borewell location & the depth, would you advise taking any further steps before doing in the 3rd time ! Alternatively, can you suggest a local expert who can help us on the ground?
Looking forward to your reply.
Thanks!
Manu.
8. Thank you!
Thank you everyone for the reply.
We are continuing our efforts to solve the issue & will keep this forum posted on the progress!
Meanwhile, I must say that 'IndiaWaterPortal' is a fabulous forum for resolving such issues. Thanks to the team who is working behind this great initiative!
Best,
Manu.
9. Well logging
Dear Manu,
Well logging, also known as borehole logging, is the practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole. The log may be based either on visual inspection of samples brought to the surface (geological logs) or on physical measurements such as spontaneous potential (SP) and electrical resistivity made by instruments lowered into the hole (geophysical logs). Well logging is done when drilling boreholes for oil and gas, groundwater, minerals, and for environmental and geotechnical studies.Go to http://en.wikipedia.org/wiki/Well_logging for further details
INTEGRATED GEO INSTRUMENTS & SERVICES (P) LIMITED (IGIS) (CEO: Dr. K.R. Ramanujachary) manufacture the best quality well logging equipment in India besides carrying out well logging. It is possible some one near to your place purchased equipment from the IGIS. You may contact the IGIS for the necessary information.
Tel / Fax: 40-27018456, 27005810
Mobile: 094400-48410
Email: info@igisindia.com
Website: www.igisindia.com
Good luck
Rao
Dr. R. Jagadishwara Rao Professor of Geology Retired Sri Venkateswara University Tirupati, AP 517502, India rjagadiswara@gmail.com
10. Dear Manu, In the area of
Dear Manu,
In the area of Kolayat, Bikaner, gypsum is encountered at depths. Below certain depth the groundwater is saline also. Drilling of well upto 100 meters are sufficient for ground water withdrawal. The only precaution required is to have corrected position of slots which can be ensured by geophysical logging. The problem with the present well is due to inappropriate well construction.
With regrads,
D. Chakraborty
Scientist
Central Ground Water Authority (CGWA)
New Delhi
Post new comment