TY JOUR TI Reservoir Characterization and Rock Typing Assessment Utilizing Hydraulic Flow Unit (HFU) and Global Hydraulic Elements (GHE) of Sanga-Sanga Early-Middle Miocene Sandstone, Kutai Basin, Indonesia KW Hydraulic flow unit KW Rock type KW Reservoir Characterization KW Petrophysics Parameters KW Volumetric Calculation JO Russian Journal of Earth Sciences AU Eki, K.. AU Nita, A.. AU Wien, L.. AU Aji, A.. AU Numair, A.. AU Siti, N.. PY 2026 IS 25 PB Geophysical Center of the Russian Academy of Sciences