Well logging lies at the intersection of applied geophysics, petroleum and geotechnical engineering. It has its roots in the tentative electrical measurements in well bores which were made by the Schlumberger brothers some 80 years ago in the earliest days of systematic petroleum exploration. Today, a variety of specialized instruments is used to obtain measurements from the borehole during, as well as after, the drilling process. This readable and authoritative treatment of the physics of these measurements dispels the "black magic" of well log interpretation by relating them, including those obtained by the latest generation of tools, to rock physics. It offers a thorough exposรฉ of the physical basis of borehole geophysical measurements, as well as an introduction to practical petrophysics - extracting desired properties from well log measurements.
Content:
Front Matter
• Preface
• Table of Contents
1. An Overview of Well Logging
2. Introduction to Well Log Interpretation: Finding the Hydrocarbon
3. Basic Resistivity and Spontaneous Potential
4. Empiricism: The Cornerstone of Resistivity Interpretation
5. Resistivity: Electrode Devices and How They Evolved
6. Induction Devices
7. Electrical Devices for Measurements other than Rt
8. Basic Nuclear Physics for Logging Applications: Gamma Rays
9. Gamma Ray Devices
10. Gamma Ray Scattering and Absorption Measurements
11. Basic Neutron Physics for Logging Applications
12. Neutron Porosity Devices
13. Pulsed Neutron Devices
14. Nuclear Magnetic Logging
15. Introduction to Acoustic Logging
16. Acoustic Waves in Rocks
17. Acoustic Logging Methods and Applications
18. Lithology Identification from Porosity Logs
19. Clay Typing and Quantification from Logs
20. Saturation Estimation
21. Extending Measurements Away from the Borehole
Index
• Credits