[1] We have investigated the potential of combining cross-hole georadar velocity and attenuation tomography as a method for characterizing heterogeneous alluvial aquifers. A multivariate statistical technique, known as k-means cluster analysis, is used to correlate and integrate information contained in velocity and attenuation tomograms. Cluster analysis allows us to identify objectively the m...

[1] Estimation of the three-dimensional (3-D) distribution of hydrologic properties and related uncertainty is a key for improved predictions of hydrologic processes in the subsurface. However it is difficult to gain high-quality and high-density hydrologic information from the subsurface. In this regard a promising strategy is to use highresolution geophysical data (that are relatively sensiti...

Abstract One of the challenges in reservoir management is determining fracture density (FVDC) rock. Given high cost coring operations and image logs, ability to predict FVDC from various petrophysical input variables using a supervised learning basis calibrated standard well extremely useful. In this study, novel machine approach developed 12-input variable well-log based on feature selection. ...

Abstract The present work deals with an interpretation of well log data (gamma ray (GR), resistivity, density, and neutron) from four wells, namely P-1, P-2, P-3 P-4 in the study area Rio Del Rey basin. logs analysis indicates five potential sandstone reservoirs at two six P-4. neutron–density-GR highlight gas reservoir characterized by high resistivity crossover between neutron density. cross-...

The estimation of the formation permeability is considered a vital process in assessing reservoir deliverability. prediction such rock property with use minimum number inputs mandatory. In general, porosity and are independent petrophysical properties. Despite these observations, theoretical relationships have been proposed, as that by Kozeny–Carmen theory. This theory, however, treats highly c...

Abstract Seismic inversion is a geophysical technique used to estimate subsurface rock properties from seismic reflection data. data has band-limited nature and contains generally 10–80 Hz frequency hence combines well log information along with extract high-resolution acoustic impedance which low as high frequencies. This property qualitative quantitative of that can be analyzed enhance geolog...