Once the screen, pack, seals and backfill have been installed, the well is developed. This development aims at repairing the damage done to the aquifer during the course of drilling by removing clays and other additives from the borehole. This also alters the physical characteristics of aquifer around the screen and removes fine particles.
The use of over pumping as a means of development is not advocated since it only increases permeability in zones which are already permeable. Instead, we recommend mechanical surging with a plunger or the use of air or water jetting which physically agitates the gravel pack and adjacent aquifer material. This is an extremely efficient method of developing and cleaning wells.