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FORmation MEchanics Logging - FORMEL

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.

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The figure shows as a function of depth

  • 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 

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