BASIC DRILLING METHODS
OPERATING FUNDAMENTALS
Basically, there are three (3) fundamental operations in rotary drilling.
These are:- drilling the hole,
removing the cuttings and setting the well casing. In rotary drilling, no
casing is set at all until the water bearing strata is reached. Then the
casing is lowered into the hole and the well is completed. In case of a
rock formation, the casing is lowered to the point where the rock drilling was
begun and is then driven into the hole a short distance and if necessary, sealed
off with cement.
