₦airaland Forum

Bobbyunitedfc:
DONT THINK IT IS BRO....U USED A SAND OF 35 AND 15K TO SETUP YOUR HOUSE TO ROOFING LEVEL,Y WILL I NEED 3 TRIPS OF SAND TO SETUP 500 BLOCKS

Dats on a hype side really

1Segzy:
Very informative. What do you refer to as full casing? Is there something called half casing. What is casing in general? How far or deep should casing go in a borehole?

Thanks 1Segzy for the compliment.

Casing generally are the pipes that are inserted into a drilled borehole. Here, we normally use pvc casing... I think they use metal casing b4 but was stopped due to corrosion
The pipes are of different thickness and diameter. And the pump is suspended inside it.

What they usually mean by half casing is that, the stable part of the hole won't be cased at all... For instance, let's say you are drilling through a rock, the driller might decide to case just the part where we have soft formations (clay, sand, silt etc) leaving the part with rocks open.

In full casing also called cased down, the whole length of the hole is cased leaving no part uncased.

Me personally prefer casing down for my projects but you should know it's a function of the cost of the project. You as a client might really not know what is going on that is while the no 1 priority in borehole drilling is having a trusted and competent hand on the job.

Another thing is screening. Here holes are made on some parts of the pipe at different depths where we ve aquifer units. This is aimed at allowing inflow of filtered water into the hole at those depths. With this, you won't just be tapping water from the bottom hole.

In general, casing helps to prevent unstable sediments /formations from caving in or collapsing thereby blocking your hole. It also prevent contamination to your water.

Let me use this image to explain further.

I hope this little explanation is helpful.
Thanks

esshman:
Lalasticlala Seun Ishilove Obinoscopy this is front page worthy Pls

Wow, thanks Bro....how rẹ you doing.....I believe your enjoying the change

That was d image we got using Resistivity method.... Let me now show you Wat vlf gave us.

ollypapi:
please anyone who can get me sample question for npower tech software?
kindly send it to my mail or inbox me here
ollypapi1@gmail.com
thanks

.

Larwin:
Here is the result from the resistivity profile on the dumpsite.
The leacheates is expected to b conductive. Considering the color scale, we can noticed a flow downward

The highly resistive body at the middle is suspected to be a stable earth material controlling the flow of the leacheate.

For the control profile, we got this...
The resistivity values here are higher compared to the dumpsite. It means here is somehow free from leacheates. But low resistivity values was seen in the iterated image. This was done about 30m from the dumpsite

Na our ppl plenty pass sef

This is nice, how is it fixed to the building? Can u explain pls

nabiz:
It is a lie

Truths are always embedded in lies

Mehn, when will Nigeria really win the war against insurgents..... Enough of all this lieing

.

Learn about borehole drilling here...

https://www.nairaland.com/3236298/know-geophysical-investigation-borehole-drilling

Happy Sunday guys..... [center][/center]

kennykane1:
@Poster, I notice you are located in Ibadan. May I ask if your services can be offered outside of your location (/Ajah / Lagos) for instance. Or perhaps considering the swampy nature of Ajah such processing is not required?

Good evening. Thank you for contacting us. We work outside our office base, We have worked in vast number of states/towns across the nation, Lagos state not excluded. We would be glad to come in to look into the issue (Ajah), kindly get to me privately then we can pick it up from there.


Considering the swampy nature in Ajah as you mentioned, we may not be able to make much comments or discussions based on various factors such as peculiarities per site - each site or location tends to have their own peculiarities, you know nature Will not give us uniform situations in all places. This alone is enough to call for further studies.

Another vital factor is the land's purpose of use - what will the site be used for? Residential?, mighty structures? Recreation?... These are just few out of the many things that would be considered before and when venturing into further studies. We can get to discuss outside this forum maybe on WhatsApp.

Thanks.
+2348037010771,

Explorers:
Like while drilling, they are making way for the molten magma to the surface?

You know all ds magma are confined deep down with great pressure, so drilling opens up cracks in the Subsurface giving the magma opportunity to rise up.

You would have heard of earthquake or land tremors in places like saki, Kaduna, bayelsa.... If drilling is not controlled, Nigeria should be expecting real earthquake anytime soon.

Well I think the assumption that there is gold at the Centre of the Earth is wrong. It's only composed of elements containing iron, nickel, Sulphur and the temperature is red hot that one can't imagine.

Happy Sunday

Here is the result from the resistivity profile on the dumpsite.
The leacheates is expected to b conductive. Considering the color scale, we can noticed a flow downward

The highly resistive body at the middle is suspected to be a stable earth material controlling the flow of the leacheate.

News carried that an earth tremor occurred in Kaduna, making inhabitants of the area panic. These occurrence was also felt in Shaki, Ibadan and some other parts of the Basement Complex (Areas with Igneous and Metamorphic rocks) of Nigeria.

Most Nigeria Geologists believe that the country is on a stable zone. However, recent studies have shown that Nigeria is located between a stable craton at its west, the Cameroon volcanics to its East, the Atlantic Ocean to the South and the Younger Granites to the North in Niger (although we have some of its portion around the Jos-Plateau, down to Birin-Kudu in Jigawa state).
Out of all the West African state only Ghana rest comfortably on a Craton (stable part of crust) called the West Africa craton. Nigeria is located to its Eastern part.

It is believed that the pan-African orogeny is the last orogenic process that affected the whole landmass of Africa. Just some days ago, earthquake was also recorded in Tanzania. This means that Africa may not be stable after all.

I put forward the following hypothesis to counter the proposition that Nigeria is stable:

1. The Benue Trough is known to have be formed during the Santonian. It is the third arm of the a rift system, although it is a failed one unlike the one around Egypt. This Olade termed the Aulacogen. If not for its failure during the separation of South America from Africa and the opening of the Atlantic ocean, Africa would have been divided into several minor plates. Therefore, a reactivation of the Benue Trough might cause several earthquakes. A recent study I carried out showed that the some schist areas of Nigeria (where Kaduna is located) is highly jointed (for example the Owo schist area) and that many of the joints are reacivated (Manuscript submitted for publication). This shows that there is a possibility of reactivation through tectonism.

2. The reactivation of the Cameroun volcanoes is potent threat to our country. If the volcanoes are reactivated, its impact will be felt in Nigeria. These earthquake might be a possible signal to the rejuvenation of these volcanoes. Volcanologists should set out to study them.

3. The Mid Oceanic Ridge (MOR) in the Atlantic Ocean should continually be studied. It might give us a clue to what is happening.

4. Incessant drilling of boreholes for water penerating these fault and fracture zones can cause their reactivation. Government and policy makers should endeavour to enact a law that will stop incessant borehole drilling. However, before this can be done, efficient public water must be put in place such that every house is connected to a main source of water supply.

Written by Adewumi, A.J.

Learn about borehole drilling here...

https://www.nairaland.com/3236298/know-geophysical-investigation-borehole-drilling

News carried that an earth tremor occurred in Kaduna, making inhabitants of the area panic. These occurrence was also felt in Shaki, Ibadan and some other parts of the Basement Complex (Areas with Igneous and Metamorphic rocks) of Nigeria.

Most Nigeria Geologists believe that the country is on a stable zone. However, recent studies have shown that Nigeria is located between a stable craton at its west, the Cameroon volcanics to its East, the Atlantic Ocean to the South and the Younger Granites to the North in Niger (although we have some of its portion around the Jos-Plateau, down to Birin-Kudu in Jigawa state).

Out of all the West African state only Ghana rest comfortably on a Craton (stable part of crust) called the West Africa craton. Nigeria is located to its Eastern part.
It is believed that the pan-African orogeny is the last orogenic process that affected the whole landmass of Africa. Just some days ago, earthquake was also recorded in Tanzania. This means that Africa may not be stable after all.

I put forward the following hypothesis to counter the proposition that Nigeria is stable:
1. The Benue Trough is known to have be formed during the Santonian. It is the third arm of the a rift system, although it is a failed one unlike the one around Egypt. This Olade termed the Aulacogen. If not for its failure during the separation of South America from Africa and the opening of the Atlantic ocean, Africa would have been divided into several minor plates. Therefore, a reactivation of the Benue Trough might cause several earthquakes. A recent study I carried out showed that the some schist areas of Nigeria (where Kaduna is located) is highly jointed (for example the Owo schist area) and that many of the joints are reacivated (Manuscript submitted for publication). This shows that there is a possibility of reactivation through tectonism.

2. The reactivation of the Cameroun volcanoes is potent threat to our country. If the volcanoes are reactivated, its impact will be felt in Nigeria. These earthquake might be a possible signal to the rejuvenation of these volcanoes. Volcanologists should set out to study them.

3. The Mid Oceanic Ridge (MOR) in the Atlantic Ocean should continually be studied. It might give us a clue to what is happening.

4. Incessant drilling of boreholes for water penerating these fault and fracture zones can cause their reactivation. Government and policy makers should endeavour to enact a law that will stop incessant borehole drilling. However, before this can be done, efficient public water must be put in place such that every house is connected to a main source of water supply.

Adewumi, A.J.
Geologist and Lecturer,
Department of Geological Sciences, Achievers University,
Owo, Ondo State.

Na dem sabi, Nigeria na one chance country.

Funny

Here is the basemap used to effectively map the leacheates. It was suh a long spread.
You can see where the well inventories were taken, the vlf profiles.

We only had two resistivity profile line, one on the dumpsite and the other at a distance from the dumpsite as control (not shown on the map)

I will show you the results shortly.

Debteecreations:
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In our company, we create footwear(flats and heels), bags from head to toe and recycling. Also we make bouquets, beads, handfan for brides, party guest and fashion lovers. As well we give training to those who have passion for fashion.

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08136327463

Well, dat will be nice if you can get the pictures of what mind really want.... You didn't post samples of your work

Equipments were deployed to the field.

Yea, to effectively map the extent the contaminants has moved in the Subsurface, different methods were used.
1) Geophysical method using Resistivity imaging and Very low frequency electromagnetic method

2) Hydrophysical analysis was done too on water samples from well, borehole and surface water close and far from the dumpsite.