A method of detecting sand production zones in a well, including the following phases: At least one well operating regime is established, wherein a fluid flow is present, said fluid flow carrying solid particles either along the wellbore or in one or more formations; At least one instrument for objective measurements of acoustic signal amplitude is run in or pulled out of the well either at a constant speed or stopping at stations; Acoustic signal amplitude is measured either at a station or during running in or pulling out of the well using the at least one instrument for objective measurements of acoustic signal amplitude; The acoustic signal amplitude measurement data obtained in the well are processed, detecting amplitude peaks in the registered acoustic signal, the amplitude peaks being generated upon collision of the solid particles with the at least one instrument; At each depth, the amplitude peaks resulting from the measurements are compared with reference peaks recorded in advance in laboratory conditions and only those amplitude peaks that correspond to solid particle impacts are discriminated, the solid particle impacts against the instrument being discriminated from other types of impacts in time domain; The solid particle impacts carried by the fluid flow from the one or more formations is discriminated from the solid particle impacts moving along the well, the energy of the solid particle impacts being estimated by the instrument and compared with reference values, wherein the energy of the solid particles carried out in the fluid flow from the one or more formations is higher than the energy of the solid particles moving along the well; Solid particles are counted; And zone of solids production in the wellbore is identified. At least one well operating regime is established, wherein a fluid flow is present, said fluid flow carrying solid particles either along the wellbore or in one or more formations; At least one instrument for objective measurements of acoustic signal amplitude is run in or pulled out of the well either at a constant speed or stopping at stations; Acoustic signal amplitude is measured either at a station or during running in or pulling out of the well using the at least one instrument for objective measurements of acoustic signal amplitude; The acoustic signal amplitude measurement data obtained in the well are processed, detecting amplitude peaks in the registered acoustic signal, the amplitude peaks being generated upon collision of the solid particles with the at least one instrument; At each depth, the amplitude peaks resulting from the measurements are compared with reference peaks recorded in advance in laboratory conditions and only those amplitude peaks that correspond to solid particle impacts are discriminated, the solid particle impacts against the instrument being discriminated from other types of impacts in time domain; The solid particle impacts carried by the fluid flow from the one or more formations is discriminated from the solid particle impacts moving along the well, the energy of the solid particle impacts being estimated by the instrument and compared with reference values, wherein the energy of the solid particles carried out in the fluid flow from the one or more formations is higher than the energy of the solid particles moving along the well; Solid particles are counted; And zone of solids production in the wellbore is identified.