₦airaland Forum

Oakenshield:
Which area in Benue

mcfemight:
Hmmm 🤔 philanthropist. it's well

99thEnemy:
Good day everyone.

I need advice from people here who have real experience with borehole drilling.

I carried out a geophysical survey on my plot this month, March 2026 , to determine the best location for a borehole. The survey suggested two possible spots: Point 2 and Point 6, and the recommended drilling depth for both spots is 160 meters.

However, from my layman understanding of the report, it seems like water may be available at a shallower depth than 160m. I may be wrong, which is why I am posting here for expert interpretation.

Attached is the survey image so that those who understand these readings can help explain whether 160m is truly necessary or whether water can reasonably be gotten at a lower depth, especially at Point 2 or Point 6.

I was given the following drilling quotations:

₦17,000 per meter using 8 bar PVC casing
₦18,000 per meter using 8 bar PVC casing

I was told that the difference between the ₦17,000 and ₦18,000 rates is the casing thickness, although the exact diameter and wall thickness were still not stated clearly.

I was also given another quote of:

₦24,000 per meter using 10 bar PVC casing

But again, the diameter and wall thickness were not stated.

I also asked how much it would cost if they do only the drilling/punching, while I buy and supply the casing myself. I was told that drilling/punching only would cost ₦14,000 per meter for the 160m depth.

I want to ask the experts here:

1. Looking at the survey image, does it truly mean I need to drill to 160m at Point 2 or Point 6, or is it possible to get good water at a lower depth?

2. Am I misreading the report where it seems water can be found earlier?

3. Does a recommendation of 160m usually mean that is where the best aquifer is, where the cleanest water is, or that shallower water may not be reliable?

4. Between 8 bar and 10 bar PVC casing, which one is more suitable for a 160m borehole?

5. Since I was told the difference between the ₦17,000 and ₦18,000 per meter quotes is thickness, what exact thickness should I be asking for?

6. What exact PVC casing specification should I be asking for:
diameter, wall thickness, pressure rating, screen/slotted pipe spec, and brand/manufacturer?

7. Is it a red flag for a driller to mention only 8 bar or 10 bar, and say one is thicker, without stating the exact diameter and wall thickness?

8. If I decide to buy the casing myself, what exact specification should I request so I do not buy the wrong one?

9. Apart from casing, what other materials would I need to provide if I go with drilling only/punching only?

10. Is ₦14,000 per meter for punching only not unreasonable?

11. Is it better to let the driller supply everything, or is it safer to buy the casing/materials myself?

12. Between Point 2 and Point 6, which location looks more suitable based on the survey?

13. What other questions should I ask before agreeing to drill?

I do not want to make a costly mistake, so I would really appreciate advice from people who understand borehole drilling and casing specifications well.

Thank you.

please I need help

Cmeo:
When was this survey done? How recent is it?

femi4:
Safer distance: 20– 30 meters if space allows

Kinterez:
Recommended depth is 160m approximately 528ft plus n minus 6mtrs...if u minus 6mtrs then Recommended depth is 508ft..u can drill 480ft and it will sustain...
Recommended casing for such depth is 4½inches casing...15 casing (12bar), 15casing (10bar) others can be 8bar....Puncturing is negotiable...

engrajoo1:
I have a similar issue with u. I was given same depth of 160m on the borehole I wanted to do on my farm. So I looked at the village and I found out most of the water source there are well. I was foolish not to consider some factors like land terrain, distance of existing well to my own farm, challenges they faced while digging their well. I never asked those questions and I proceeded to digging a well. Well, I was a little lucky but it was when I started I found out there were lots of abandoned wells in the area due to the fact that they couldn't easily get water or they met rock at the bottom. Eventually I spent more than half of what I should have spent on borehole yet I couldn't get enough water as I eventually hit rock a d breaking it was a Herculean task as the options presented were not feasible for safe.

So I'd advise.... Go with the flow, when they want to dig ensure u are there with them.... So u and the contractor should keep measuring the depth they've gone together. So like you thought it might not be up to the 160m. So since it's charged per meter, you'll eventually pay the depth dug.... However have the maximum amount for the 160m. But eventually you might get good amount water before then. But prepare for 160m.

geosegun:
I guess this this is a basement terrain? The actual depth should be 170m to180m. The geophyscist wants to save you some money. Hence the recommended 160m.

The aquifer at about (~100m) is called perched aquifer. It is also good if you don't expect heavy water use. You should be fine with normal domestic use but the water may sometimes be be available to other tenants and neighbours and the surroudings? The yield, may reduce rapidly if used constanly or may reduce drastically during the dry season.

The water at 180m is the main aquifer and never get to dry and the yield remains constant irrespective of use. If you don't want issues due to water yield and quality in future, ensure the water depth reaches about 180m. This would ensure excellent water quality, high yield consistencies and borehole stability for now and in future.

I would recommend drilling up to at leadt 170m for excellent water yield, quality and your peace of mind which is more important.

Ate247:
for as supposed 160m as claimed. 1.5hp not good at all.

Rajiolaade:
Purple is where the most water deposit situates, follow by blue while red ,brow orange and yellow depths are the least water concentrated areas ,i.e NO go areas.
I can see clearly from the result map points where purple and blue= promising and highly sufficient acquifer lies between 0 and 40 metres.
Good luck.

Onyemaboy:
unless they will be transparent enough to tell you the truth about the type and quality of casement pipes and risers to buy ,if not let them buy everything and do the work.

Pls buy the sumo pump by yourself or you tell them to buy lorentz or astral (1.5hp). They are more durable but more expensive.

Bobwitwicky:
160m
That's deep..
What area is that??

bizzibodi:
You fail to tell us the type of soil in your area is it Sandy soil or laterite?

Timoleon:
So you want a professional to give you free consultation over another professional's work? You no see us for here to contract us for the survey?

femi4:
Let them buy everything, if anything goes wrong tomorrow, they ll accuse you of buying inferior materials...please spend this money

The quality of the submersible pump is also key

Any point you are selecting, make sure that it is far away from your soakaway to avoid story that touch

Oakenshield:
which area of Nigeria you dey were u wan drill borehole.
1. Choosing 2 or 6 is very okay as far se aquifer is punctured through
2. Do not drill less than 160m but above recommended add extra 10m
3. What's the terrain of your area.
Please state the state and local government so I can advice you more

BigCowHornn:
Are you living in the eastern part of Nigeria or on a hill? 160 m is way too deep to find water

Anyway don't dig that borehile yourself or use a substandard materials to do it in the name of shaving costs. Follow expert advice

You see where you first strike water during drilling... Which is the closer to be surface you are talking about... That is not where they do it will stop

You are looking for drinking water that has passed through layers and layers of sedimentary rock to be clean enough for drinking

Where you first strike water let us call it point A... The water will never be clean

You must go at least 20 to 30 m deeper. But given your location I would say at least 50 minutes

smartokc:
Blue/purple areas = good water zones
Red/orange areas = avoid drilling
Expected water depth around 70–150 meters

Cmeo:
First and foremost, what is the goal of the borehole? Is it for home or farm/commercial use? If its for home use, there is no need for 160m. With point 2 will even be good with 40m - 50m depth, but if you would use it for commercial, you can make it 70m to 100m to have more buffer. You will need to go to deeper if you will be using the point 6 either for home or commercial use.

My candid advise, don't tell them the depth you would eventually settle for till they get to site, keep counting the number of rig that they use. Each rig is about 5m length (or thereabout) and keep your eyes open. After they must have got to about 40m (or based on use depth I earlier mentioned) on point 2, you should be good water for use.

Please note that this advise is not from an expert.

Hypnotise:
yh, team iOS

Checkwell:
No be everything person dey bring come online. You can use commone sense sometimes to make right choices.

Hypnotise:
lol. I remember when I too used to say I'm not a fan of IPhone, please do not suggest them

Dododudu:
Na from mechanic I dey always hear shaft o. Abi hin be mechanic ni

kpankpangolo:
Somebody should explain to me. It’s not the same in sane climes. I understand it’s not a suitable word but some people with only SSCE qualifications are so annoying that I blurt the word to destroy their self esteem.

princeade86:
Government will not warn those that protesting now ooooo

zinaunreal:
The war must continue. No negotiations

Long live the islamic Republic of iran

Nwaikpe:
Una don start to dey make noise.

Una wan implicate another country.

After you deceived Iran, now Iran is gone,
You still want to hype another nation to its destruction.

China will not fall for it.