Estimation of Rock Mechanical Parameters Using Well Log Data in the Well Poseidon 1, Lower Cretaceous, Browse Basin, Northwest Shelf, Australia

Abstract

This work implements a well-logging approach to evaluate the rock Elastic Parameters, basic Rock Mechanics, and in-situ Stresses in an interval of the Well Poseidon 1 located in the offshore Browse Basin in the Timur Sea of Australia. For this aim, there were used several correlations for the Young’s Modulus, Uniaxial Compressive Strength; one formula for Poisson’s Ratio and one for Angle of Internal Friction, and the Poroelastic Model with tectonic strains for the horizontal stresses with calibrations from logs. All these estimations were compared to a homologous section with triaxial test laboratory data and with previous studies. The results reached indicates that the chosen correlations can replicate under the adequate considerations the values of the rock mechanics and they give also good estimations for in-situ stresses in the interval studied. Moreover, these can be used to model the Young’s Modulus, Uniaxial Compressive Strength, Internal Friction Angle with fair precision. This methodology can be used in order to create geomechanical models by estimating the basic parameters needed, these models can be applied to Improved Oil Recovery, Enhanced Oil Recovery, Carbon Capture and Storage, and Carbon Capture Utilization and Storage projects.