Multi-pole array acoustic tool can be used to make the following measurements: mono-pole array acoustic measurement, cross dipole (xx dipole and yy dipole) array acoustic measurement, quadra-pole array acoustic measurement. Features The robust mechanical design of this tool allows for successful jobs in deviated/horizontal wells. Applications Lithology identification Formation porosity evaluation Fracture identification Formation anisotropy analyses In situ earth stress analyses Formation fluid differentiation Permeability estimation Borehole stability analyses Rock strength analyses Induced-fracture evaluation after stimulation Synthetic seismogram Avo calibration