Parameters of interest in hydraulic fracturing are the principal stresses, hoop stress and rock strength parameters such as Young's modulus and Poisson's ratio. Modern seismic inversion algorithms allow us to extract rock strength parameters. We show that they can be estimated between wells from seismic data. The azimuthal response of conventional and/or multicomponent seismic data is related to the stress field of the earth. By combining these methods, the magnitude of the principal stresses and the directions of the horizontal stresses may be estimated and then, hoop stress and fracture breakdown pressure can be approximated. These estimates may be used to guide field development away from existing wells.

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