However, for the simple sonic log that we are interested in, only the first arrival of the P-wave is of interest. ppt on sonic log 1 - 2 OPEN HOLE WIRELINE LOGGING TRACS INTERNATIONAL Planning a Logging Job Logging objectives and programmes ... SONIC µs / … The sonic transit time depends on the lithology, porosity and fluids in the pore ... Sonic Log. Schlumberger Log Interpretation Principles / Applications manual, both of which are widely available within most petroleum engineering offices. SONIC OR ACOUSTIC LOGS 2. sonic log - View presentation slides online. Sonic log 1. 5. If hydrocarbons are present, fs must be reduced by a factor of ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 28be6-NDA0Z UNITS The units are micro seconds/ft, which is the inverse of velocity. The speed of sound in rock is governed by the physical properties embodied in the Wood-Biot-Gassmann Equations. Presented by Badal Dutt Mathur 10410007 5th Year Integrated M.tech Geological Technology 2. Sonic Porosity Formula • From the Sonic log, a sonic derived porosity log (SPHI) may be derived: – Wyllie Time-average – Raymer-Hunt-Gardner – For unconsolidated formations • This requires a formation matrix transit time to be known • SPHI Units: percent, fraction … There are complex tools that make use of both P-waves and S-waves, and some that record the full wave train full waveform logs(). Sonic log and its applications 1. DEFINITION The sonic log is a porosity log that measures interval transit time (Δt) of compressional sound wave traveling through one foot of formation. SONIC LOG BASICS The first sonic logs appeared in 1957. Zubair Kamboh Copy Rights 2012 3. 4. Sonic-log - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. 16.1 The geophysical wavetrain received by a sonic log. Sonic logs, also known as sonic travel time logs or slowness logs, rely on the properties inherent in Snell's Law to propagate sound from a logging tool through the rock to receivers on the same logging tool. Fig.