Definition(s)
LHD
Low head drilling.
Source: NORSOK D-010, Well integrity in drilling and well operations, Rev. 3, August 2004. Global Standards
Low Head Drilling
Drilling operation where the dynamic bottom-hole pressure in the well bore is equal to or slightly higher than the pore pressure of the formation being drilled.
Source: NORSOK D-010, Well integrity in drilling and well operations, Rev. 3, August 2004. Global Standards