borehole drilling nairobi kenya

Borehole Drilling Company in Kenya

Borehole Drilling Company in Kenya

At Raeli Hydro Borehole Drilling,  we  have  the   capacity   and  expertise needed to satisfy all your drilling requirements. The company has established an exceptional reputation as a provider of quality service with international recognition. All our works meet local and international standards.




1. Borehole site study

After the contract has been formalized, our technical team will visit the site along with geologists to identify the best place to carry out the drilling process.

2. Borehole Drilling Equipment Mobilization

The drilling rig accompanied by a support truck will reach the site. Based on the soil and rock formation conditions, we would take approximately 3 hours to prepare for the drilling process.

3. Borehole Drilling

The drilling is carried out by using the “Down-The-Hole” (DTH) technology. This system works by using high compressed air built within our drilling rig. The size of the hole can vary depending on the requirement of the client.

As the drilling process continuous, geological rock samples are taken at 2 meter intervals. Struck and water rest levels are constantly recorded. This process enables us to estimate the yield of individual aquifers encountered.

4. Well Casing

Once the borehole has been drilled, it must be lined with either steel or UPVC casing. The casing process keeps the well open and protects the earth, similar to the efforts to protect groundwater. The hard metal casing shores up the well bore and extends through both the verticality and the horizontal drilling phases, assuring the long-term integrity of the well from end-to-end.

In addition to providing stabilization and keeping the sides of the well from caving in on themselves, casing protects the well stream.

5. Well Development

Oncethescreen,pack,sealsandbackfillhavebeeninstalled,thewellisdeveloped.Thisdevelopmentaimsat repairingthedamagedonetotheaquiferduringthecourseofdrillingbyremovingclaysandotheradditives from the borehole. This also alters the physical characteristics of aquifer around the screen and removes fineparticles.

The use of over-pumping as a means of development is not advocated since it only increases permeability in zones which are already permeable. Instead, we recommend mechanical surging with a plunger or the use of air or water jetting which physically agitates the gravel pack and adjacent aquifer material. This is an extremely efficient method of developing and cleaning wells.

6. Construction of water Towers and Water tanks

A water tower is an elevated structure supporting a water tank constructed at a height sufficient to pressurize a water supply system for the distribution of potable water, and to provide storage.

7. Well Testing

After development and preliminary tests, a long-duration well test is carried out. Well tests have to be carried out on all newly-completed wells, because not only does this give an indication of the success of the drilling, design and development, but it also yields formation on aquifer parameters which are vital to the hydrogeologist.

8. Submersible Pump Installation

Use a submersible pump to pump the water out of the borehole to the water usage spots in your home. A submersible pump is a type of water pump that can be submerged in a body of water to pump water from the borehole They are often used in wells, sumps, and other applications where the pump needs to be located below the water level.

submersible pump

submersible pump

9. Solar system installation

Solar  Energy Panels can be used on submersible pumps for the pumping of water from boreholes. They are a great source of alternative renewable energy. Most of common DC water pumps can work directly connected to the solar panel, but their biggest problem is stuck. At dawn, the sunlight begins to change from weak to strong, when the output voltage of solar panel achieves the starting voltage, the pump will start to work

More information about the Borehole Drilling Services

1. What is the total cost of drilling a borehole?

The cost of drilling a bore hole depends on the location and depth of the borehole. Kindly get in touch with us for a quotation.

2. What specific documents do I require?

  • Geological / Hydrological Survey carried out by a registered geologist in the designated country.
  • Water Resource Management Authority (WRMA)Authorization.
  • Environmental impact assessmentreport
  • NEMALicense

If required, we can assist in acquiring the above permits and licenses.

3. What is a hydro-geological report?

Once the geologist has surveyed the area, he/she will provide you with a detailed report on the geology of the parcel of land. This report will also indicate the estimated depth of the water and the exact location of the borehole.

4. Why do I need a NEMA report?

A NEMA report consists of an environmental impact assessment report that details the impact of drilling a borehole on the environment. This is a mandatory requirement by law before drilling of the borehole (in Kenya only)

5. Why do I need water analysis report?

After drilling the borehole and doing test pumping, we will take a water sample to the government


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Get in touch with us to know more about how we can make our solutions available to you. You can call, visit or mail us using the contact information provided here.


Mon-Fri 5am – 11pm
Sat-Sun 3am – 8am




Waiyaki Way
Westlands, Nairobi

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