Petroleum Engineering 405 Drilling Engineering 1 Well Drilling Engineering Prediction of Abnormal Pore Pressure Dr DO QUANG KHANH 2 Prediction of Abnormal Pore Pressure Resistivity of Shale Temper[.]
Well Drilling Engineering Prediction of Abnormal Pore Pressure Dr DO QUANG KHANH Prediction of Abnormal Pore Pressure Resistivity of Shale Temperature in the Return Mud Drilling Rate Increase dc - Exponent Sonic Travel Time Conductivity of Shale Read: Applied Drilling Engineering, Ch HW # Shale Resistivity vs Depth Establish trend line in normally pressured shale Look for deviations from this trend line (semi-log) EXAMPLE Shale Resistivity vs Depth Establish normal trend line Look for deviations (semi-log) Shale Resistivity vs Depth Pore Pressure (lb/gal equivalent) 16 14 12 10 Establish normal trend line Look for deviations ppg (normal) Use OVERLAY to quantify pore pressure (use with caution) Depth, ft Shale Density , g/cc Depth, ft Mud Temperature in flowline, deg F Example 8.2 X Why? Example 8.8 X Thermal conductivity, heat capacity, pore pressure 10