Bmbott
New Member
Hi my current well is 62 feet deep its 50yrs old and started slowing down . I was told to drill deeper in current well . Anyone have experience or knowledge of this . Hoping this works and dont have to drill a whole new new well
Redrilling old well
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Usually harder and more expensive to try and drill a well deeper than to move over and drill a new well. But if the casing can be pulled and you can find a good driller it is possible. I have only done this when there was absolutely no other place to get water.
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Is the water good from that well? You may be able to clean out the old well, or boost production some other way.
I presume slowing down means you run out of water.
Bmbott
New Member
Bmbott
New Member
Seems easier to go down say 40ft with same well being it is only 62 ft And add wire and pipe then to redo plumbing from house to well ..
So in that case, I would think the pump is getting weak/slow, rather than the well getting slower
So, the pump is not already set close to 62' deep at the bottom of the well? If there is any well left then yes you can add some pipe and wire to set the pump deeper. If the pump is already as deep as you can get it, doing some well rehab and cleaning up the iron maybe all you have to do.
Bmbott
New Member
That's what I'm thinking also. No it's 4ft from bottom. Just had new pump installed that's how i found out that the well is slow to recover. New pump is much faster then the old one ..
Wisciherb
New Member
Is your well a screened well or does it terminate in bedrock? If it's screened you can try acid treatment to clean the well screen ( only on pvc or stainless steel screens) I have had pretty good luck doing that. For older wells with steel or galvanized you take your chances it may eat up the screen and cause the well to pump sand. Google a product called nu well. Hope this helps.
Bmbott
New Member
I don't understand what u mean by screen or terminated? It's a submersible 1/2 hp well pump. Single line with pump in well
Some wells are cased to the bottom. Some "terminate" the casing about 20' down when they hit rock, and the rest of the well is not cased. If clogged well screen is your problem chemical treatment will help. Haven't tried nuwell tabs in anything except sand points. Normally I would use products from Cotey Chemical and a surge brush to clean metal or PVC screens.
How much water is your well making now? Why do you think it is slow?
How much water is your well making now? Why do you think it is slow?
Bmbott
New Member
Ok thanks.. it's making 6 or 7 gpm. But slow to recover . Think the well just needs drilled deeper to clean it up .. it is pretty shallow depth on avg
Bmbott
New Member
Any truth to someone drilling close to u making a new well can take ur water. My neighbor recently installed new well . Might be coincedense..
Irrigating, so using a lot of water?
If nothing else, a deeper and/or wider well will have more storage, and may take in water faster. But if the well used to provide fast-enough recovery, then the rejuvenation may be a great choice.
Martin Boring
In the Trades
Had this happen to FIL trailer court years ago a farm sold next to the trailer court houses started going up and wells drilled and the trailer court's wells ran out of water and new deeper wells had to be drilled to get the water going again at the trailer court.
Bmbott
New Member
Thanks
Bmbott
New Member
Thanks
Try this search in a search engine: well rehabilitation
One of the thing that will turn up is https://waterwelljournal.com/well-pump-rehabilitation-4/
It states
The fact that your pump is set so close to the bottom would tend to say this was never a great producer.
One of the thing that will turn up is https://waterwelljournal.com/well-pump-rehabilitation-4/
It states
A well should generally receive some type of maintenance if the relative yield or specific capacity falls to or is more than 2%-5% from its new or previously tested state. It should be rehabilitated if the relative yield or specific capacity declines more than 15%-20% from its previous condition. Any drop more than the values just stated can result in a “situation of no return” where the best and most aggressive rehabilitation techniques may not be capable of recovering more than 75%-80% of the original yield.
With a 60 or 70 ft deep well, that would make the cost percents higher I would think. Many wells are much deeper.The fact that your pump is set so close to the bottom would tend to say this was never a great producer.
It is very possible for neighboring wells to be reducing your water supply. One or two is usually not noticed, but a mobile home park with dozens or hundreds of new wells can make a big difference. We have problems in our area with new subdivisions moving in next to a big cotton farm. Everything is fine until about March when the irrigation wells all get turned on. That is when the screaming begins. What we would do is drill through the sand aquifer into the clay. Usually we would stop there. But we would change bits and go on down in the clay about 20' and set the casing accordingly. This does not supply more volume of water, but puts your pump below the water that is available. Even if there is only 4" of water left in the aquifer, your pump is 20' deeper and able to draw water when the neighbors cannot.
Every area is different though. You might drill your well 20' deeper and drill through the bedrock, letting what water you have flush down to a deeper aquafer. Most likely what water you have comes from above 62', which is why the well was drilled that way. In that case drilling deeper won't get you any more water, but might make a good sump like we do here when needed.
One thing for sure is a well that makes iron is going to need rehab. Not one of my specialties, but there are people who can acidize, swab, bail, and clean that well like it was new. Regular treatment could also keep the problem from building up.
Every area is different though. You might drill your well 20' deeper and drill through the bedrock, letting what water you have flush down to a deeper aquafer. Most likely what water you have comes from above 62', which is why the well was drilled that way. In that case drilling deeper won't get you any more water, but might make a good sump like we do here when needed.
One thing for sure is a well that makes iron is going to need rehab. Not one of my specialties, but there are people who can acidize, swab, bail, and clean that well like it was new. Regular treatment could also keep the problem from building up.
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