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在用于放射性物质的γ测井中,测井系统的响应取决于系统本身和外界的影响,如物质的种类、平衡破坏、源的几何形状、测井方法和系统的部件。最重要的是系统的响应值(cps)与不同品位物质的关系为一比例常数。Broding,Rummerfield(1955)和Scott(1961)给该常数下了定义,通常称谓K系数。任何系统的K系数都不能根据系统的部件及总装置直接计算,因此必须在特定的条件下通过试验测定。为了满足生产对这一特定条件的需要,原子能委员会在科罗拉多的大江克欣建立了一套具有多个实验模型的标定站。该模型所含物质的品位和厚度是已知的,以便能测得适宜的系统响应值。这些模型已成为生产标准。当需要
In gamma logging for radioactive materials, the response of a logging system depends on the system itself and the outside world, such as species, balance damage, source geometry, logging methods, and system components. The most important thing is the relationship between the system response (cps) and different grade substances as a proportionality constant. Broding, Rummerfield (1955) and Scott (1961) define this constant, often called K-factor. The K-factor of any system can not be directly calculated from the system’s components and the total plant, so it must be tested under certain conditions. To meet the needs of production for this particular condition, the Atomic Energy Commission established a set of calibration stations with multiple experimental models in Okeechin, Colorado. The grade and thickness of the material contained in the model is known so that the appropriate system response can be measured. These models have become the production standards. When needed