oa A Simple Technique for Estimation of Reservoir Permeability from Seismic Reflection Data Based from Biot’s Theorem

Relationships among elastic parameters and rock properties, and ultimate reservoir parameters have<br>been established in continuum mechanics and rock physics. Therefore, it should be possible to estimate<br>reservoir permeability from the seismic data. We used Biot's solution of wave equation in an elastic<br>porous medium and the approximations of Turgut-Yamamoto to allow an establishment of a linear<br>relationship between attenuation coefficient or amplitude ratio as a function of the inverse of the<br>square of frequency. The slope of this function includes the permeability. It can be shown that this<br>technique agrees to the measurement of the permeability of a porous medium from seismic<br>waveforms. We examined this technique to estimate the reservoir permeability by using synthetic<br>seismogram data. The result show that has an error less than 5 %, it means that the study of<br>permeability estimation from surface seismic data is possible by using an accurate calibration step. The<br>procedure is tested on 3D seismic data over part of Duri field in central Sumatra, Indonesia. The<br>simplicity of the theoretical approach requires the introduction of an empirical calibration factor that is<br>provided by well SM#A in the area. This factor is then implemented to estimate the permeability with<br>seismic data on the field; it gives a permeability map of the study area. A key result of the study is<br>that permeability estimation with surface seismic data are possible but requires calibration. A<br>confirmation and validation of this procedure will be subject to future work.