Encyclopedia of well logging

The aim of this book is to provide students, trainers and engineers with a manual covering all well-logging measurements ranging from drilling to production, from oil to minerals going by way of geothermal energy. Each chapter is necessarily a summary, especially in the field of conventional measurements which are effectively described by service companies and some authors, but each topic can be followed further by means of the bibliographic lists which give te best references in each field. In Chapter 4 is given a description of natural gamma-ray logs, diffused gamma-ray logs, neutron logs and nuclear magnetic resonance log, calibration and the accuracy of nuclear measurements