Well development is the process
by which a borewell is cleaned and the
permeability of the borewell is increased by
removing fine materials like sand, clay
deposits and rock cuttings accumulated in
borewells and gravel packing provided around
It is also carried out to borewells which are facing reduction in water yield over a period of time to increase its yield. The reduction in yield can be due to clogging of pores spaces by silt and mineral deposits.
Flushing and Over Pumping in the borewell or flushing the borewell with adequate air pressure is required. In hard rock areas, flushing is done after the drilling process for at least 2-3 hours by using compressed air before drilling is stopped. Most of the drillers avoid this as it is an additional task. This is an important process that must be finally performed before completion of the drilling process at any given site. Flushing using air pressure or over pumping the borewell are the methods normally employed to improve the yield of such borewells.