A computer-implemented method for determining first final values of a first geomechanical parameter of a first well in a first rock structure, the method comprising the steps of: obtaining first input data from a database, the first input data generated, at the first well, by at least one first tool module, the first input data comprising first well parameters of the first well; calculating first intermediate values of the first geomechanical parameter of the first well using a first porosity-based model and the first input data; and determining the first final values of the first geomechanical parameter of the first well from the first intermediate values and the first input data using a first prediction model; characterized in that obtaining the first input data comprises the steps of: obtaining first intermediate input data from the database, the first intermediate input data generated, at the first well, by at least one first tool module, the first intermediate input data comprising first intermediate well parameters of the first well; identifying missing data which is missing in the first intermediate input data, and which is necessary for calculating the first intermediate values and/or determining the first final values; choosing at least one second well from a plurality of wells stored in the database; obtaining second input data from the database, the second input data generated, at the at least one second well, by at least one second tool module, the second input data comprising second well parameters of the at least one second well; and merging the first intermediate input data with parts of the second input data that correspond to the missing data to gain the first input data with the first well parameters. obtaining first input data from a database, the first input data generated, at the first well, by at least one first tool module, the first input data comprising first well parameters of the first well; calculating first intermediate values of the first geomechanical parameter of the first well using a first porosity-based model and the first input data; and determining the first final values of the first geomechanical parameter of the first well from the first intermediate values and the first input data using a first prediction model; characterized in that obtaining the first input data comprises the steps of: obtaining first intermediate input data from the database, the first intermediate input data generated, at the first well, by at least one first tool module, the first intermediate input data comprising first intermediate well parameters of the first well; identifying missing data which is missing in the first intermediate input data, and which is necessary for calculating the first intermediate values and/or determining the first final values; choosing at least one second well from a plurality of wells stored in the database; obtaining second input data from the database, the second input data generated, at the at least one second well, by at least one second tool module, the second input data comprising second well parameters of the at least one second well; and merging the first intermediate input data with parts of the second input data that correspond to the missing data to gain the first input data with the first well parameters. obtaining first intermediate input data from the database, the first intermediate input data generated, at the first well, by at least one first tool module, the first intermediate input data comprising first intermediate well parameters of the first well; identifying missing data which is missing in the first intermediate input data, and which is necessary for calculating the first intermediate values and/or determining the first final values; choosing at least one second well from a plurality of wells stored in the database; obtaining second input data from the database, the second input data generated, at the at least one second well, by at least one second tool module, the second input data comprising second well parameters of the at least one second well; and merging the first intermediate input data with parts of the second input data that correspond to the missing data to gain the first input data with the first well parameters.