Drilling technique

Drilling technique

Direct circulation, reverse circulation and MFT (down the hole hammer)

• MFT
  This drilling technique uses percussion combined with a push on the tool which is itself rotating. which is itself in rotation. It is a very interesting process in hydrogeological research hydrogeological research and mainly in hard grounds (limestone and sandstone).

  
• Direct rotating circulation
  The rotary drilling technique uses a tool (drill bit) mounted at the end of a line of probe line Rotary drilling can drill any formation and allows a good control of the drilling of the drilling parameters

  
• Reverse traffic
  This drilling method differs from the direct circulation method in that the fluid circulation of the fluid (mud, water or air), it goes down in the annular space (between the formation and the drill pipes) and the cuttings are brought up inside the drill string train of rods It ensures a better individualization of the successive arrivals of fluid during the drilling during drilling.