"INTRODUCTION Studies made over a number of years in efforts to relate the values obtained on electrical logs to the physical phenomena associated with the wells and reservoirs from which the logs were obtained@ indicate that interpretation of electrical logs will be made more effective if information as indicated on the accompanying heading (Fig. 1 and 2) is obtained! These data represent factors which exert@ in general@ a major influence upon the values recorded on the log. For example@ the physical properties of the drilling fluid are particularly important. It is a matter of record that the water loss and resistivity of the drilling fluid vary in field practice over a range sufficiently wide to affect the curves markedly."" Also@ it has been shown""@"" that considerable change in the electrical log pattern occurs with a change in electrode configuration. Because of this@ accurate and complete information regarding number and spacing of electrodes is essential for an intelligent interpretation of the logs. In order to encompass such items and to make the heading more usable@ some changes and additions have been made respectin~ forms now used by the various logging companIes."
API RP 31-1948 history
1967API RP 31-1967 RECOMMENDED PRACTICE AND STANDARD FORM FOR ELECTRICAL LOGS THIRD EDITION (R 1976) (WITHDRAWN)
1959API RP 31-1959 RECOMMENDED PRACTICE AND STANDARD FORM FOR ELECTRICAL LOGS (SECOND EDITION)
1948API RP 31-1948 RECOMMENDED PRACTICE for STANDARD ELECTRICAL LOG FORM (First Edition)