All the above-described technologies for self-drilling of water wells have common features. After the well has reached the aquifer (water appears in large quantities in the rock), they continue to drill for some time, going deeper into the aquifer by 1-2 meters. Then the entire drill string is disassembled, and the casing is installed inside the well.
It is necessary to understand the casing. Choose a diameter depending on the size of the hole you have drilled and the type of pump you plan to use. We must carefully consider the choice of material. For some time asbestos pipes were used for the casing. But they are very harmful – the strongest carcinogen. Do not use galvanized pipes – zinc is not excreted from the body, it accumulates. And poisoning them has very bad consequences.
There is not so much choice – pipes from steel and stainless steel, as well as plastic – HDPE and PVC. (more…)