The wells drilling way introduction

July 14, 2010 - PRLog -- Wells drilling division
The wells drilling can be divided into many kinds. Presently there are so many names of well drilling, such as screw drilling, vertical drilling, horizontal directional drilling, no dig drilling, air compressed drilling, tunneling drilling, core drilling, etc. http://www.gnsolidscontrol.com/hdd-equipment/

Also the well drilling usually will be oil well, natural gas drilling, coal gas drilling, mining core drilling, thermal well drilling, civil construction horizontal directional drilling, water well drilling, no dig shallow well drilling.

The kind of drilling wells
The wells can vary greatly in depth, water volume and water quality. Well water typically contains more minerals in solution than surface water and may require treatment to soften the water by removing minerals such as arsenic, iron and manganese

The drill rods can weigh several tons; if the drill pushes too hard or turns too fast, the drill bit will wear out; if it does not push hard enough, it won't penetrate the rocks. There are often several rock layers in a single well; each may need different drilling pressures. Once water is encountered, the driller will need to keep a close watch on the drilling process.

By comparison, dentists have only one tooth material to drill, a light can be shined to the bottom of the hole, pieces can easily be
washed out with a special spray, and the dentist works in an air-conditioned room. http://www.geoexchange.org/

For ground water monitoring, or for scientific research purposes, wells may be drilled in a way that allows the specialists to closely examine the rock formations and take frequent water samples. Augured wells and diamond core drilling are drilling techniques often used for scientific purposes. Three methods typically used for drilling water wells are rotary, air hammer and cable tool.

Other info on well drilling
The drill bit will be made of tough metals such as tungsten, and as the drill is rotated, the bit acts to grind up the rock. The broken pieces (cuttings) are flushed upward and out of the hole by circulating a drilling fluid (sometime called drilling mud) down through the drill pipe and back to the surface.

This drilling fluid also serves to cool and lubricate the drill bit, and by stabilizing the wall of the hole, it can prevent possible cave in of unstable sands or crumbly rock before the well casing or well screen is installed. Also the drilling fluid need to be done solids control process. http://www.gnsolidscontrol.com/fluids-processing-system/

There are other methods, and combinations of methods, but these are the most common. Most home wells are drilled to 8 or 6 inches inner diameter. Municipal or irrigation wells are likely to be drilled at larger diameters, sometimes as much as 24 inches or more. In rotary drilling, a drill bit is attached to a length of connected drill pipe.

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GN Solids Control---Tangshan Guanneng Machniery Equipment Co., Ltd. manufactures the solids control equipments and whole drilling fluids processing system for various well drillng or slurry separation. Including shale shaker, desander, desilter, mud cleaner, decanter centrifuge, centrifugal pump, mixing hopper unit, shearing pump, poor boy degasser, vacuum degasser, mud agitators, flare ignition device, etc.