ABSTRACT
Control of the quality of geophysical logs recorded at the well site is the responsibility of all concerned, from the organization providing the logs to the analyst interpreting them. The ultimate responsibility lies with the professional who ordered and accepted the logs. The selection of the horizontal and vertical scales for the analog plot that will provide the most useful data is an important aspect of log quality control. Log headings may be divided into two basic sections: information on the well and data pertaining to the logging equipment and operations. The American Society for Testing Materials standard guide provides only an overview and refers to other publications for specific information on the various logging methods. Calibration checks should probably repeat within the same range given for resistivity logs. Standard solutions used for calibrating conductivity meters can be used to check calibration.
