Acknowledgements About the Authors Preface (Second Edition) Preface (First Edition) 1: Basic Relationships of Well Log Interpretation Introduction General Borehole Environment Invasion and Resistivity Profiles Basic Information Needed in Log Interpretation Common Equations Review 2: The Spontaneous Potential Log General Formation Water Resistivity (Rw) Determination Shale Volume Calculation Review 3: Gamma Ray Log General Shale Volume Calculation Spectral Gamma Ray Log Review 4: Porosity Logs General Nuclear Magnetic Resonance Log Sonic Log Density Log Neutron Log Porosity Measurement Combinations Consistency in Lithology Prediction Review 5: Resistivity Logs General Laterologs Induction Logs Flushed Zone Resistivity Logs Interpretation High Frequency (dielectric) Measurements Review 6: Magnetic Resonance Imaging Logs: by Steven Henderson General Limitations of Conventional Logs Nuclear Magnetic Resonance Applications Principle of NMR Logging Pore Size and Fluid Moveability NMR Permeability Direct Hydrocarbon Typing NMR Applications in Carbonates Review 7: Log Interpretation General Scanning the Logs: A Reconnaissance Technique Archie Water Saturations: Sw and SXQ Quick-look Methods Bulk Volume Water Saturation Crossplots Permeability From Logs Shaly Sand Analysis Review 8: Petrophysical Techniques General Neutron-Density Lithology Plot Neutron-Sonic Lithology Plot Density-Sonic Lithology Plot M-N Lithology Plot MID (Matrix Identification) Lithology Plot (Pmaa vs. ~lma) MID (Matrix Identification) Lithology Plot (Umaa vs. Pma) Alpha Mapping From the SP Log Clean Sand or Carbonate Maps from the Gamma Ray Log Rock Typing and Facies Mapping Review 9: Borehole Imaging: by Neil Hurley General Electrical Borehole Images Acoustic Borehole Images Downhole Video Images Emerging Techologies: Other Borehole Images Borehole Image Interpretation Review 10: Interpretation Case Studies 1: Pennsylvanian Atoka Sandstone, Permian Basin, U.S.A. 2: Mississippian Mission Canyon Formation, Williston Basin, U.S.A. 3: Eocene Wilcox Sandstone, Gulf Coast, U.S.A. 4: Pennsylvanian Upper Morrow Sandstone, Anadarko Basin, U.S.A. 5: Cretaceous Pictured Cliffs Sandstone, San Juan Basin, U.S.A. 6: Ordovician-Silurian Chimneyhill Subgroup, Hunton Group, Anadarko Basin, U.S.A. 7: Pennsylvanian Canyon Limestone, New Mexico, U.S.A References