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borehole is a system used to drill an artificial hole in the country for access to underground fluids. While the purpose of all drills is essentially the same, the methods of browsing different geological layers may vary. A water drill can use any of the three or more methods-function drilling, the hammer at the bottom of the holes or drilling cable tools-to penetrate sand, slate, clay and rocks to achieve aquifer or groundwater. The shafts of the well. The swivel movement comes to bits using the drill chain by the engine on the well and, as the bit turns, breaks the rock or slate into small pieces. These small pieces, sometimes called cuts, are brought up and out of the opening by circulating drilling fluids along the drilling pipes and upstrane of the venstrana drilling system to the surface.

well drill bit and pipe are cooled by passage of drilling liquid and wall shaft walls drilled with sand or mud stabilizes, which prevents caves. When waters occurA Aquifer, clean water passes through the shaft, allowing the well drill to identify the depth of the upper part of the water source. In general, drilling continues above the first access to water, often up to 100 feet (about 30.5 m) or more to allow water levels to fluctuate.

In the areas of extensive hard rocks, the lower opening air hammers are often drilled. The air line flows along the shaft and the compressed air provides energy for the air hammer in the opening. The compressed air also serves to help throw away the remains or cuttings from the hole.

Cable tool drill has been usually replaced by rotary drilling system. When drilling the cable, the heavy piece is attached to the thick cable and the bit is raised and decreases repeatedly and pounds through the underground layers. The residues are regularly scared from the hole with a water hose.

in areas where technology is limited and water tables are close to the surface, a driven point or sand point can be used. The sand drill is simply a series of short pipes SpoJeny with threaded ends that end up at a hard steel point with a part of the reinforced screen above the point. The screen allows water pumping when blocking sand. The whole device resembles a spear or spear.

The driving pipe is simply a short part of the threaded steel pipe that connects when the sand point is inserted into the sand with the attitude of the raised and dropped well drill. In the sandy well, the drills are limited to use in soil, which is basically without a rock. Despite its easy use, the sand point has a limited water flow and is primarily a residential application. This technology has been widely used in the United States where conditions allow and are still widely used in many developing countries.