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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Natural gamma logging is a kind of most basic methods of well logging in cased Wells which measure with gamma ray detector along well during logging.

自然伽马测井是套管井测井中一种最基本的方法。它以地层自然放射性为基础，测井时用伽马射线探测器沿井眼进行测量。地层中的自然伽马放射性不是一成不变的。

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This article introduces the new logging method which uses Gadolinium-injecting instead of Boron-injecting and uses Neutron-Gamma Logging instead of Neutron Lifetime Logging.

文章介绍了注钆代替注硼，中子伽马代替中子寿命的测井方法，对其优点作了分析，并列举了一些实例。

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Precision steerable drilling hugely benefits from yet more technology real-time data from a technique called logging-while-drilling using technologies like gamma ray and neutron sensors that continuously analyze and report what precisely is in the ground at that point.

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