The basis of all well development methods is to carry
out activities that will make it easier for water to
reach the pump suction.
Whatever the method used, the ultimate purpose of
developing the well is the same. Well development
is carried out to maximize well yield. All new wells
should be developed before being put into
production to achieve sand free flows and maximum
There are two main objectives to be achieved
through well development. To the extent that either
or both objectives are achieved better well yield will
be the result.
The first objective is to repair damage done to the
formation immediately surrounding the borehole by
the physical operation of drilling. It is in this area
that cable tool drillers and rotary drillers often
discuss the impact of their chosen method on the
formation and ultimately on well yield.
Repairing the damage to the formation involves:
Removing any clay smear or mud cake
covering the aquifer surface.
Flushing out of the borehole drilling fluids,
which were introduced during the drilling
Reverse any chemical or physical changes to
the formation surrounding the borehole, which
was brought on by the drilling activities and or