Abstract：In the study of reservoir prediction, the sonic logging curve is easily affected by various factors and cannot reflect the characteristics of the reservoir, especially in some complex areas. In view of this, this paper puts forward a multi-curve blend method that uses natural gamma, natural potential and resistivity curves in different layers to reconstruct a new pseudo acoustic curve which can not only better reflect the lithology but also keep the consistency of the time-depth relation. The result of stochastic inversion can highlight the difference between the reservoir and the surrounding rock and greatly improve the vertical resolution and lateral continuity of the impedance inversion profile.
