Words to Describe drillings

How drillings often is described ("________ drillings")

• shallow
• washed
• curly
• geological
• deepest
• unsuccessful
• cadet
• radial
• successful
• partial
• test
• core
• clean
• mixed
• several
• deep
• experimental
• vertical
• small
• iron
• fresh
• additional
• few
• internal
• mysterious
• further
• deeper
• dry
• thin
• exploratory
• tiny
• illegal
• new
• frequent
• well
• horizontal
• hole
• sea
• recent
• fine
• standardized
• first
• nightly
• cross
• round
• numerous
• successive
• cheap
• conical
• secret
• coarse
• severe
• blue
• subsequent
• shore
• plain
• extensive
• standard
• preliminary
• earlier
• previous
• multiple