摘要
报道了快中子非弹性散射γ能谱测井, 非弹γ谱的新解析方法软件及应用. 新的解析方法包括: 以标准非弹γ谱为基础, 对用NaI(Tl) 探测器记录的 256道地层非弹γ谱作定量解析,求出各主要元素产额的方法; 求新的C/O和Ca/Si值的方法. 可同时求出 3种C/O和Ca/Si的值, 即碳氧产额比、重量百分含量比和原子比; 钙硅比也如此. 所设计的软件功能强, 对于孔隙度为 35%和 100%油饱和砂岩地层与 100%水饱和砂岩地层 (刻度井模型地层), 碳氧原子比之差值>0. 33, C/O测井油水差值提高了 60%以上, 并求得了地层的含油饱和度.
The new analyzing method & software and applications of enelactic spectra from carbon/oxygen spectrometry log is reported. Enelastic γ-ray spectra(256 channels) obtained by (NaI(Tl)) detector were analyzed quantitatively based on standard enelastic spectra, the methods which the ratio of elements yields and new ratio of C to O & of Ca to Si, the yield ratio of C to O and the weight ratio of C to O and the atoms ratio of C to O were found, and the corresponding ratio of Ca to Si were found simultaneously by using the new analyzing method. The difference-value of the atoms ratio of C to O between 100% oil saturation and 100% water saturation in sandstone with 35% porosity is greater than 0.33. The difference-value between oil and water increase by a factor of 60%. In addition oil saturations curves changed with the depth were calculated.
出处
《原子核物理评论》
CAS
CSCD
北大核心
2005年第1期67-71,共5页
Nuclear Physics Review
基金
中国石油天然气总公司油气田开发导向技术基金资助项目 (9612103)~~
