Borehole water drilling
What we offer (Our Services)
After the agreement has been formalized, our technical team will visit the site along with geologists to identify the best place to carry out the drilling process.
The drilling is carried out 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.
Once the screen, pack, seals and backfill have been installed, the well is developed. This development aims at repairing the damage done to the aquifer during the course of drilling by removing clays and other additives from the borehole. This also alters the physical characteristics of aquifer around the screen and removes fine particles.
We use of pump test as a means of development since it increases permeability in zones. This is an extremely efficient method of developing and cleaning wells.
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 hydro geologist.
Today, it is a common practice to carry out a ‘step drawdown test’, in which the yield is increased stepwise. Each step is continued until hydraulic equilibrium is reached after which the yield is increased with 50 to 100%.Towards the end of the test a water sample of 2 liters is collected for chemical analysis
Cost of drilling a borehole
The cost of drilling a borehole depends on the location and depth of the borehole. Kindly get in touch with us for a quotation.