Evaluating cementation factor for bioturbated sandstones, Bhuj Formation, Kachchh Basin, India: a novel approach using triple-porosity model

Abstract Cementation factor has a crucial role in evaluating volumetric reserves for heterogeneous clastic reservoir. Bioturbation is prominent source of heterogeneity existing hydrocarbon-bearing formation across the world. The effect bioturbation on petrophysical properties not been comprehensively understood yet, especially its cementation estimation. precise description such beneficial developing better estimates and optimizing field development planning. present work discusses an approach to characterize bioturbated Bhuj Formation, Kachchh Basin, India. In order ascertain exponent media, improved triple-porosity model proposed by quantifying total porous volume into three components, namely matrix 1, 2 region. An equivalent resistance then developed identifying series parallel relation between two components burrow. experimental observations electrical response indicated large variation resistivity vertical cores compared horizontal cores. decreased due vertically aligned burrow which their enhanced porosity provides less tortuous path current flow. validated with different value burrow, 2.8 higher samples 3 lower obtained. This validates previous understanding flow storage property thereby produces consistent way evaluate factor. correct estimation helps evaluation water saturation reservoirs.