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1. Drilled to one surface location to another sub-surface location.
2. For the relief well.
A directionally drilled well
is defined as a well bore that
intersects a potentially productive
formation and does not
intentionally exit the formation for
the remaining footage drilled.
Generally, this means that the well
is spudded like a conventional
vertical well, and at a
predetermined "kick-off" point
(KOP), the well is deviated from
the vertical so that the well bore
enters the formation roughly
parallel to the bedding plane. In
addition to directionally drilled
wells from the surface, some mine
operators drill directional wells
from within the mine working for
degasification and geological
control. Currently .
