Rock strength is an essential and effective property in the rock drilling, excavation, cost evaluation. This work aims to examine a practical approach evaluate geomechanical properties that control drillability, such as uniaxial compressive (UCS) by utilising some petrophysical parameters (porosity bulk density) elastic (Young’s modulus, slowness). To achieve this aim, study was conducted on Ju...

Abstract. Petrophysical properties are a key element for reservoir characterization but also interpreting the results of various geophysical exploration methods or well logs. Furthermore, petrophysical commonly used to populate numerical models and often critically governing model results. Despite common need detailed properties, data still very scarce not available area interest. both online r...

The main purpose of this paper is to further clarify the complexity of the inversion method by using Niche Genetic Algorithms (NGA) to inverse the petrophysical property parameters. The improved BISQ model, presented in our earlier work, is chosen for the forward model in NGA. In this paper, the relationship between the sample number of the given wave response data and the inversion results, su...

Elastic property-porosity relationships are derived directly from microtomographic images. This is illustrated for a suite of four samples of Fontainebleau sandstone with porosities ranging from 7.5% to 22%. A finiteelement method is used to derive the elastic properties of digitized images. By estimating and minimizing several sources of numerical error, very accurate predictions of properties...