摘要
脉冲中子-中子（PNN）测井技术,利用测量地层中剩余热中子数量随时间变化关系,提取地层的俘获截面,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,也具备独特的数据处理技术。本文简单介绍PNN测井的基本原理及基本解释方法,主要通过实际分析地层俘获截面的影响因素,包括矿化度、孔隙度、泥质含量等影响,探讨PNN解释的方法。并通过与其它脉冲中子测井方法的对比,探讨PNN的适用范围。PNN测井在海上、印尼的应用实例表明,PNN测井是确定单井剩余油饱和度的有效手段之一。
The pulsed neutron-neutron(PNN)logging tool records thermal neutron rates during capture reaction.The capture across section could be attained from that reaction and applied to calculating saturation of remained oil.The collection method of PNN is different from other pulsed neutron tools.It also has unique data processing technique.This paper introduces the basic principle and interpretation method of PNN well logging.Through analysing the influencing factors of the capture cross section including salinity,porosity and shale content,etc., it discusses the interpretation method for PNN.And it also dicscusscs the applicability of PNN through comparison with other pulsed neu- tron logging methods.The application of PNN well logging on the sea and in Indonesia shows that PNN well logging is one of effective mea- sures to determine the remainder oil saturation of single well.
出处
《国外测井技术》
2008年第3期24-27,5-6,共4页
World Well Logging Technology
