伽玛能谱测井
Gamma-ray spectrometry logging
中子伽玛测井
neutron gamma log
Neutron-gamma ray logging
自然伽玛测井
Natural gamma-ray logging
gamma ray log
gamma ray logging
Gammar ray logging
gamma-ray log
自然伽玛能谱测井
natural gamma ray spectrometry log
Natural gamma ray spectrolog
自然伽玛能谱测井仪
Natural gamma spectroscopy logging tool
natural gamma spectromenter of logger
顺便伽玛测量
Combined gamma-ray survey
免维修测井井次
number of log with no maintenance