Well drilling
for groundwater exploitation (drilling for water supply)
We execute water supply wells whose attainment follows four stages:
Stage I: digging drill hole
digging drill hole at projected depth and localization, according to preliminary hydrogeological study;
Stage II: digging drill well
conducting geophysical logging of the well, crossed aquifer delineation, identify productive intervalls, estabilish oportunity of equipping for water exploitation and the filters positioning intervalls;
tubing and cementing program development;
Stage III: enlargement, equipping and commissioning of well
widening probe hole;
introducing filtering coloumn;
replacement of drilling fluid with water;
lifting;
filtering gravel introduction;
air-lift pumping for clogging and desanding;
cimentation;
Stage IV: hydrogeological testing
introduction of submersible pump and efficacy and performance testing;
water sampling for microbiological and physico chemical analysis;
data processing and calculation of hydrogeological parameters;
establish optimum operating flow;
accomplishing technical documentation of drilling and surrender to beneficiary;