Borehole Drilling Cost In Kenya

Grekkon Limited’s borehole drilling cost in Kenya through a mechanical drilling rig is dependent on 2 factors:

• • The borehole drilling method; air v mud drilling
  • Casings type to install; PVC v steel casings
  • The geographical drilling location; determines the mobilisation cost

A Grekkon Limited borehole drilling rig on site at Matuu area, Machakos county

The borehole drilling method

There are 2 borehole drilling methods;

I. Air drilling / pneumatic percussion drilling is an under-balanced drilling technique (UBD). Here, compressed air or nitrogen is used to cool the drilling bit and extract the cuttings of a well-bore instead of fluids. this is carried on stable ground with a proper rock formation

II. Mud rotary drilling. The fluid is pumped down the hollow drill pipe (kelly) and forced out of jets in the drill bits. It is an open hole reciculatory drilling method. Chemicals used here are; Bentonite clay (Gel), Barium sulphate (Barite), Calcium carbonate (chalk), and Hematite

The location. The further it is from our branches, the higher the mobilisation cost

Our borehole drilling price in Kenya varies with the the drilling method, which is determined by the rock structure

Borehole Drilling Price In Kenya

By Drilling Method

Borehole Drilling Cost in Kenya

Details

• Mobilisation is the movement of human resource and equipment to the borehole drilling site
• Drilling is the actual sinking of the 8″ diameter well in the ground
• Casing is the installation of PVC or metallic 6″ diameter tubes to support the well, keeping it from collapse. Those along the water aquifer are slotted to allow in water into the well. The slots are 1mm to 2mm in size
• Graveling is the application of gravel in the 2″ gap between the well and the casings. Graveling holds the casings in place and also sieves the water
• Well development is the cleaning of the well to remove debris
• Test pumping is the process of pumping out water for 24 hours from the borehole with a large submersible water pump, powered an equally powerful generator. This establishes the water recharge rate (yield of the borehole) given in cubic litres per hour, and the static water level. The test pumping results determine the type of electric or solar submersible water pump install in the well
• Water chemical analysis is the last stage. A sample of water is analysed in the laboratory to determine it’s chemical composition. With these results, a grower assesses the suitability of the water for irrigation for specific crops according to their salt/ salinity tolerance

A test pumping report from a borehole drilling service by Grekkon Limited

A water analysis report from a newly drilled well

Cost of Drilling A Borehole in Kenya

By Geographical Location