Summary This paper introduces a new transformation technique which can be used for parallel estimation of multiple reservoir properties (porosity, saturation etc.) from the joint inversion of compressional and shear wave velocities of the regional sediments. The inversion is carried out using Recursive Ant Colony Optimization technique, a modified form of conventional ant colony model. This technique converges much faster as compared to the other ant systems. Thus, it can be preferred for inversion of datasets with large number of samples. The model required for each step of inversion is framed using effective medium theory. Effective Medium Modeling takes into consideration the elastic properties of the sediments and is considered as one of the most efficient rock physics models. This method is further used to determine the porosity and hydrate logs at the NGHP-01-05 site of Krishna Godavari Basin and Mt. Elbert Well, North Alaska Slope. The results obtained by this transformation are found to be in agreement with the acquired porosity logs and the saturations estimated by other authors in the past.