Tight sandstone reservoir rock elasticity modulus calculation method

The invention discloses a tight sandstone reservoir rock elasticity modulus calculation method. The method includes analyzing characteristics of a conventional sandstone reservoir and tight sandstone reservoir respectively according to rock physical parameters; researching the main characteristics of low porosity, low pore connectivity and high irreducible water saturation of the tight sandstone; analyzing pore shapes and pore distribution features of the rocks on the basis of a rock physical model sensitive to the inclusion shape; considering the simultaneous existence of the fluid even mixing and patchy saturation distribution, combining with an attenuation model to analyze the problem that earth physical data produced in manners of low permeability and high viscosity are match mutually in different frequency bands, and applying a rock physical module established according to the tight sandstone reservoir to reservoir rock speed estimation.