2007-07-24 21:59:27 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
First of all, wells are drilled, not dug, any more. How they are drilled, depends on the purpose of the well, and the depth anticipated. There are many different types of drill rigs - rotary tool, augers, etc. For generally shallow wells (observation/monitoring wells) augers are used. These are basically just a large "screw", that is advanced into the ground, and the spoil material is advanced up the flight of the "screws" and shoveled away. A well casing will then be installed in the inside of the hollow stem auger.
Most domestic supply wells are installed with rotary techniques.
2007-07-25 04:02:22 · answer #1 · answered by krissylyn 7 · 0⤊ 0⤋
That depend upon the size and depth of the well. If it is for oil exploration a boring tool with compressed air is used. If it is for water bore wells are drilled in the same way.But for bigger well first they remove the sand to the possible maximum depth until they get water.After that the side wall arrangements will be made and simply by removing the sand from the bottom the side wall will go down automatically .They will remove the sand until they reach the required depth.Then they will make the side wall strong.
2007-07-24 23:12:56 · answer #2 · answered by A.Ganapathy India 7 · 0⤊ 0⤋
Well...if you're DIGGING it, probably by hand or with a spade/shovel.
Wells are also drilled using auger and rotary methods. Or if the substrate is relatively soft, you can drive a well point into the ground by pressure.
2007-07-25 08:40:25 · answer #3 · answered by Wayne B 4 · 0⤊ 0⤋
by hand, if you choose to believe me.
2007-07-24 22:01:08 · answer #4 · answered by moonrider 6 · 0⤊ 0⤋