Crossword

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Across
  1. 4. where a drill is placed
  2. 5. a deep, narrow hole
  3. 7. aaa
  4. 11. aaa
  5. 13. to examine
  6. 14. A heavy, thick-walled tube, usually steel, used between the drill pipe and the bit in the drill stem used to stiffen the drilling assembly and put weight on the bit (WOB)
  7. 15. material that a core bit is made of
Down
  1. 1. a type of drilling
  2. 2. The column of a core rig
  3. 3. aaaa
  4. 6. hard or protective hat
  5. 8. a device with a spinning disc
  6. 9. determine the content or quality of an ore
  7. 10. aaa
  8. 12. The borehole drilled first