• water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo
  • water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo
  • water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo
  • water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo
  • water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo
  • micropiles, water well drilling, tie-rods, surveys, Finocchi arcangiolo cortona arezzo
  • water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo
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  • water well drilling, micropiles, tie-rods, Finocchi arcangiolo cortona arezzo
  • water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo
  • water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo
  • water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo
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  • water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo
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  • water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo
  • tie-rods, surveys, water well drilling, micropiles, Finocchi arcangiolo cortona arezzo
  • water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo
  • water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo

WATER WELLS

Our company specializes in the drilling of deep water wells for domestic, industrial and water supply purposes using a variety of drilling methods.

Factors affecting drilling operations

water well drilling


- PERCUSSION WITH TELESCOPIC DRILL CASINGS (pipes)
- ROTARY DRILLING WITH DIRECT MUD CRICULATION
- ROTARY DRILLING WITH REVERSE MUD CIRCULATION
- ROTARY PERCUSSION WITH COMPRESSED AIR


water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo Percussion drilling: this drilling method involves the lifting and dropping of a heavy cutting tool that chips the material into smaller fragments. When the drilling is completed the resulting drill cuttings are conveyed out of the borehole by means of a drill bucket; subsequently the required casings (pipes) are installed. This drilling method brings both benefits and disadvantages: while water sampling, piezometric level detection and well completion are made easier the drilling equipment may be significantly slowed down and costs increase proportionally with the increase of depth.

water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo


Rotary drilling: this method includes two different types of drilling: rotary drilling with direct mud circulation: a fluid is injected under pressure by means of an appropriately sized pump into water swivel, drill pipes and nozzles of the hammer; the mud resulting from the drilling process playing a key role in preventing the borehole walls from collapsing- is washed up to the surface, decanted in special collection tanks and separated from the injected fluid for its re-use in the process. This drilling method brings both benefits and disadvantages: work progresses more rapidly; the method can, however, be employed only for boreholes of limited diameter.

- - Rotary drilling with reverse mud circulation: unsuitable for mainly rocky soils but suitable for soils of low to medium grain size this method consists in flushing the injected fluid and the drill cuttings up to the surface through the drill pipes and the water swivel; having been freed from all debris in special collection tanks the resulting cuttings are then fed back into the drilling process by means of a pipe; the system is operated by means of a compressor that feeds air into the bottom of the borehole through the feed lines installed on the drill pipes. This system can be used also for larger diameter drilling operations with high drilling speed. Questo sistema ha il vantaggio di poter essere adottato per perforazioni di pozzi dai grandi diametri, con elevate velocita di avanzamento.

water well drilling, micropiles, tie-rods, surveys, Finocchi arcangiolo cortona arezzo Rotary percussion drilling: in this method, best suited for hard, mainly rocky soils, drilling is performed by means of a down-the-hole hammer; a jet of compressed-air, flushing the debris out of the borehole and keeping its bottom clear from any cuttings, is fed into the bottom of the borehole through the drill pipes using three different methods:

- dry compressed air: the debris is flushed up to the surface by compressed-air injected at high-speed into the borehole.

- Water-foam mix: the drill cuttings are lifted by the injected compressed air and flushed out by a mix of water and foam pumped at high-speed into the borehole.

- Thickened stabilized foam mix: the volume is increased by air and the drill cuttings are lifted by the foam mix resulting in lower energy consumption and a lower air volume.

This drilling method involves lower circulation losses and allows the bottom of the borehole to be quickly and ideally freed from any debris.