A tubewell is drilled mainly in sedimentary basins where sand, gravel, clay, mud etc encounters while drilling. The method used for drilling tubewells is entirely different from that of drilling a borewell. Tubewell drilling is a time consuming process which may extent from a few weeks to nearly a month. In a tubewell construction; special grade casing pipes and pebbles / gravel packing, developing etc are a common factor. Utmost care should be taken while constructing a tubewell.