Directional drilling (or slant drilling) is the practice for drilling non-vertical wells. It can be broken down into three main groups: Oilfield Directional Drilling, Utility Installation Directional Drilling (or H.D.D. or Horizontal Directional Drilling) Directional boring, and SIS (surface In Seam), which horizontally intersects a vertical well target to extract coal bed methane.
Read more about Directional Drilling: History, Benefits, Disadvantages
Famous quotes containing the word drilling:
“Don’t spend your time in drilling soldiers, who may turn out hirelings after all, but give to undrilled peasantry a country to fight for.”
—Henry David Thoreau (1817–1862)