Restoration of drilled wells
We clean/restore drilled and dug wells featuring all types of equipment, mainly mechanically, including assessment of
the executed works which we verify by a short-term pumping test. If required, we can replace the casing head, receiving
pipe and control fittings and their connection to the existing water supply system. We are able to restore dug wells of
a diameter of 100–1800 mm down to a depth of 300 m. We also restore drills using a combined
method – mechanically with the subsequent use of chemicals.
Re-development of drilled wells
In old bores, the equipment can be broken or corroded or may even have completely collapsed. In case of larger profiles,
the equipment can be re-developed. The existing equipment can be replaced with new equipment with a smaller
profile, which ensures further use and functionality of the well.
We clean water pipes made of all types of material DN 65–1600 mm. We also carry out initial cleaning of water
mains/throughput testing of pipes before they are put into permanent operation.
We verify the state of a drilled or dug well before restoration/cleaning, in the course of the executed works or
after their termination using our in-house TV camera, and we make a digital recording. By means of the TV camera, we
can inspect bores of a minimum diameter of 100 mm down to a depth of 330 m.
We carry out elimination of old, unutilized drilled and dug wells within the meaning of Directive No. 8/1985 ČGÚ.
We verify yield of sources (pumping and recovery tests). If required, we take samples and ensure
a laboratory assessment.
Elaboration of hydrogeological opinions
