F030 Temperature Sensitivity of Wave Velocities in Shales R.T. Manafov* (University of Stavanger) R.M. Holt (NTNU and SINTEF Petroleum Research) & E. Fjaer (NTNU and SINTEF Petroleum Research) SUMMARY Ultrasonic P- and S-wave velocities were measured vs. temperature under different stress and pore pressure conditions with four shale samples of different porosities. The experiments show that velocities decrease significantly with increasing temperature. The degree of temperature sensitivity is strongly correlated with porosity and is highest for low porosity shales. Possible factors controlling temperature sensitivity are pore water compressibility pore pressure and total organic carbon (TOC) content. For high porosity shale


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