Comparison of NMR Porosity and Water Imbibition Porosity (WIP): A Case Study of Paleocene Limestone and Associated Rocks from Eastern Dahomey Basin. 13th International Bologna Conference UII Magnetic Resonance ill Porous Media, Bologna, Italy.
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This study presents the results of porosity measurement on four representative rock types (limestone, sandstone, shale and glauconite) from eastern Dahomey Basin. Standard magnetization CPMG decay curves were measured with a number of scans ranging from a minimum 0f 2000 to a maximum of 20,000 scans to achieve a good signal-to-noise ratio of the NMR response [1,2]. The connected water-filled porosity (0 in %) of the rock was estimated from three methods: (i) NMR proton signal (Tz total raw amplitude), (ii) integration from the Tz distribution  and (iii) water inhibition porosity (WIP) based on sample mass and volume under dry and saturated conditions (or partially saturated at 52 % relativhumidity).
Linear Regression , Porosity
Olatinsu, O.B and Esteban, C.L (2016) Comparison of NMR Porosity and Water Imbibition Porosity (WIP): A Case Study of Paleocene Limestone and Associated Rocks from Eastern Dahomey Basin