FORmation MEchanics Logging - FORMEL

Left part: Relative amount of clay (green), sandstone (yellow), oil (black) and water (grey).
Middle part: P- and S-wave slowness
Right part: Calculated strength for different confining pressures&nbsp;

The software uses input from wireline logs (acoustic velocities, density, porosity ++) to simulate standard rock mechanical strength tests on cores. The output is full stress-strain curves for a single depth or logs of rock strength parameters and stiffness versus depth.