HB97 bigger crystal nature gamma logging tool is designed for overcoming logging curve repeating errors due to statistical variation.

为了克服自然伽马测井时，由于统计起伏所造成的测量曲线重复性误差而设计制造HB97型测井仪。

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This paper analyzes the cause that leads to abnormal phenomenon occurring outside casing during logging with the nature gamma rav tool and presents reliable solutions to it.

分析了自然伽马测井仪在套后井测量中出现的异常现象的原因并提出了可靠的解决方法。

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A high performance natural gamma-ray spectrometry logging tool is developed, and it is designed for the high-speed telemetry system of image logging unit.

研制了一种与成像测井高速遥传系统配接的高性能自然伽马能谱测井仪。

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