... by involving the dynamic wellbore pressure, and the finite element method was employed to solve this model. The normalized yield zone area (NYZA) was utilized to characterize the stability of wellbore. The influences of waveform, mean pressure, amplitude, period, and cycle number of the dynamic wellbore...

... revealed that the presence of an azimuthally oriented fracture strongly changed the amplitudes of pseudo-Rayleigh and Stoneley wave modes, while radially oriented fractures did not provide any sensible impact on the modeled waveforms. However, the model implemented in (Ponomarenko et al., 2020) does...

..., the mudstone was broken, and the sandstone structure was damaged, which was affected by the rock mineral composition and cation exchange capacity. The sandstone interval transit time is decreased, and the attenuation coefficient is increased. The signal amplitude in the frequency domain is significantly...