Total sum of depth intervals of a given formation unit with porosity above the porosity cut-off:
h_{\rm eff} = \sum_k h_k |_{\phi_k > \phi_0} = NTG \cdot h_{\rm total} |
It's closely related to concept of NTG Thickness:
h_{\rm eff} = NTG \cdot h_{\rm total} |
where is total thickness of formation unit.
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petroleum Geology
[ NTG Thickness ] [ Basic reservoir properties ]