| Abstract |
An ingenious geothermal-well logging system based upon simultaneous real-time high-temperature/high-pressure operations has been developed by YBM (Yoshida Boring Machine Manufacturing Co., Ltd.) in cooperation with a Research Group from Kyushu University. The logging system was tested up to a maximum of 330?C and 340 kgf/cm2 in an autoclave installed to test the sealing system for various joints of the probe in high temperature/high pressure water conditions, under conditions indentical with that of deep high-temperature geothermal wells, with corrections being made in the pressure values caused by temperature changes in the pressure transducers. Data acquisitions are made, and correction systems are operated automatically by the use of a microcomputer. |