In the United Arab Emirates, Zetas, a Soletanche Bachy subsidiary, installed and operated a borefield for one year to test its effectiveness. It was the first stage in an ambitious project whose goal is to build up a reserve of groundwater by pumping it from a captive aquifer in the heart of a desert region. Eventually, it will therefore serve as a natural water reservoir – a strategic structure for the nearby urban area.
The project included the boring, construction, development and testing of 42 exploration wells and 42 observation wells.
After boring the wells, wireline coring was carried out in five exploration wells to a depth of 200m and six others to a depth of 72m, as well as geophysical borehole logging of 61 wells.
Pumping tests, progressive drawdown tests and discharge tests were carried out, as well as water sampling from the exploration wells.
Finally, the teams built a test infiltration basin with constant-rate pumping.