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Astro Geotech is involved in borehole drilling,Water treatment, Geo-physical survey, Soil test / Geo-technical investigation, pile foundations, Sand search, laboratory analysis, installation of over-head tanks and project management.
WE CAN DRILL ANYWHERE WITHIN NIGERIA.

Borehole drilling. In carrying out borehole drilling projects in Nigeria, I strongly advice every prospective client to assign a geologist with his borehole project. it is important for the client to also beware that we have different borehole types depending on your water need and affordability.

We have Direct shallow borehole and industrial(deepwell) borehole. Each one of these borehole types is designed to serve a particular purpose different from the other. In carrying out a drilling project, whether in the basement complex or sedimentary terrain, certain factors like underground water contaminants, depth of the fresh water aquifer, productivity of the well, septic contamination, mineralogical composition of the project site, salinity and so on, should be taken into consideration.
Note: A Geo-physical survey is highly recommended.

Geo-physical survey is a scientific method of acquiring geological and hydro-geological features of the earth through some standard recommendations and adopted applications. The acquisition data helps both the client and the geologist to make a better judgement.

Direct shallow borehole: This borehole type is the most common within lagos and its environs. It is the least expensive of all borehole types, the reason why it is called shallow borehole is because the borehole is not drilled to a far depth, it has active production sustainance and it is economically very affordable. In some challenging environments like victoria island, lekki, ikoyi, ajah, lagos island, satellite town, sango-tedo, etc. There is the possibility of saline contamination,sewage infiltration, organics, hydrogen sulphide(H2S) and run-off incursion in the shallow bed. It is therefore advised that water treatment plant be installed for safety, human health and environmental pressure

Industrial or deep borehole: This borehole type is the most reliable in terms of production capacity and resistance to contaminants infiltration. The aquifer is confined and deep depth located. This well production possess industrial capacity, the confine nature of the aquifer is safe from all quality interference . It is the most reliable of all the borehole types and is specially designed for bottle or pure water processing factories, large residence, hotels and high rise buildings, production factories, community water schemes,etc. The deep borehole is the most expensive of all the borehole types, because of the depth and the nature of materials involved in the drilling operations.

we can work both in BASEMENT AND SEDIMENTARY REGIONS

We provide soil test, pile foundation at very affordable price

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We drill water borehole In any part of Nigeria

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When it come to Water borehole, Pile foundation, soil test then we are your number 1 choice

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HOW DEEP SHOULD A WELL BE?
“How deep will the well be?” is a common question before drilling a well. If the driller has drilled several wells in the nearby area, he may be able to estimate the approximate depth where water will be encountered. Most of the time, however, the depth needed to find the required well yield cannot be determined accurately prior to drilling. A well is an engineered hole in the ground via which ground water can be brought to the surface. Drilling machines can drill to great depths. Deeper wells usually cost more than a shallow well to construct in the short-run. However, not drilling deep enough can result in later problems that will be much more expensive to fix.
LISTED BELOW ARE SOME OF THE FACTORS THAT MAY INFLUENCE DECISIONS ABOUT THE DEPTH OF A WATER WELL
• SEASONAL RISE AND FALL OF THE WATER TABLE
During the year, the water table will fluctuate up and down in the well in response to seasonal precipitation in the area and local ground water use. The well must therefore be drilled deeper than the lowest expected elevation of the water table. Water level fluctuations may occur over several years if there have been drought conditions. Knowing the lower limit of the range of water levels over several years therefore can be helpful.
• SURFACE CONTAMINATION RISKS
Deeper wells that are properly constructed (including grout, casing, well cap, and pitless adaptor [in freezing climates]) usually provide guaranteed protection from bacterial contamination sources originating at the surface. Increasing the well depth and the length of well casing will result in a longer flow path of water from recharge at the surface to pumping from the well. The longer the length of time water is in the subsurface, the more opportunity there is for bacteria to die-off or be trapped by soil and rock.
• POOR QUALITY WATER ZONES
In some areas of the country with multiple aquifers, there may be zones of poor water that should be avoided or “cased off” so this lower quality water does not adversely impact the well.
• LOW YIELDING ROCK FORMATIONS
In low yielding rock formations the well may have to be drilled deep enough to serve as a storage cavity for ground water. Once a well is drilled, the total depth, depth to the top of the ground water table (static level) and diameter of the well determine how much water will be stored within the well cavity. The larger the well diameter the more water will be stored for a given well depth and water table elevation.
+ To find the “thickness” of the water stored in the well subtract the depth to the static water level from the drilled depth of the well.
+ To determine the volume of water stored in a well find the well diameter in the table below and multiple the “thickness” value by the gallons per foot factor.
Well diameter in inches
4
6
8
12
24
36
Approximate Gallons per foot of well depth factor
0.65
1.5
2.6
5.9
23.5
52.9
Well depth plays a role in pump placement. Pumps should never be set directly at the bottom of a well. It is usually best to place the pump 10 to 20 feet up from the bottom of the well. In low-yield wells that recharge slowly, placing the pump below the recharge zone may create cascading water situations that lead to additional sediment build up in the well cavity. An automatic shut-off switch can be wired into the pump power line so that the pump will shut-off when the water level falls close to the pump

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@ OP. I need to drill an industrial borehole in Abeokuta, Ogun state. What is the highest diameter you can drill for me. the geographical survey report says d land is a low yield rock formation but stable.

vodaspringwater:
@ OP. I need to drill an industrial borehole in Abeokuta, Ogun state. What is the highest diameter you can drill for me. the geographical survey report says d land is a low yield rock formation but stable.

Call me 08136569906, we will need to make use of a bigger casing, and the screen casing also matters. I will explain in details when we talk.

Borehole installation

We are expert in borehole drilling(domestic or industrial) pile foundation, soil test
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