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PNN是脉冲中子—中子测井方法的英文简称,它采用记录未被俘获的热中子计数率时间谱,获取地层俘获截面,计算储层的剩余油饱和度。其采集方式区别于其它脉冲中子测井,具有独特的数据处理技术。本文简单介绍了PNN测井的基本原理及基本解释方法,并通过实际应用实例表明,PNN测井在低矿化度、较低孔隙度油田具有一定的的应用前景,可以作为部分油田剩余油饱和度监测的方法之一。
The PNN is an abbreviation for the pulsed neutron-neutron logging method. It takes the thermal neutron count rate time-series not captured to obtain the capture section of the formation and calculate the residual oil saturation of the reservoir. The acquisition method is different from other pulsed neutron logging, with a unique data processing technology. This paper briefly introduces the basic principle and basic explanation method of PNN logging. The practical examples show that PNN logging has certain application prospect in low salinity and low porosity oilfield, One of the methods of monitoring.