INTEGRATED INVERSION METHOD AND DEVICE FOR KEY PARAMETERS OF DOUBLE SWEET SPOTS OF SHALE OIL

An integrated inversion method for key parameters of double sweet spots of shale oil, comprising: acquiring inversion formulas for key parameters of geological and engineering double sweet spots of shale oil, wherein the inversion formulas specifically comprise: a two-parameter AVO approximation formula of a longitudinal wave impedance and a longitudinal-transverse wave velocity ratio; a two-parameter AVO approximation formula of a density-Young's modulus product and a Poisson's ratio; and a formula for inverting normal weakness and tangential weakness using two parameters on the basis of an azimuthal elastic impedance; and then using the approximation formulas to inverse key parameters of a geological sweet spot of shale oil, i.e., a longitudinal wave impedance and a longitudinal-transverse wave velocity ratio, and calculating key parameters of an engineering sweet spot, i.e., brittleness, a factor of fluid-filled fracture, and a horizontal stress variation coefficient. The method can improve the stability a