Water flow is critical in drilling a well. That goes for the pros as well as us folks that are trying to use
PVC to drill a well. This technique is particularly useful if you
are using water from household spigots run through hoses to flush the cuttings
up to the surface. It gives the water flow a temporary boost that
can prove useful.
By raising the pipe slowly and
allowing it to fill with water, the driller can give cuttings an extra shove out
of the hole when he forcefully pushes the drillpipe down. It simulates,
although temporarily, a much higher rate of water flow. It can be very
useful in both drilling and widening a hole.
VIDEO SHOWING AN EXAMPLE OF
FLUSHING OUT HEAVY SEDIMENT DURING THE DRILLING PROCESS