摘要
报道了快中子非弹性散射γ能谱测井 (C/Oγ能谱测井 ) 新的解析理论和方法, 也就是由C/O能谱测井仪在井眼中获取地层的快中子非弹性散射γ射线、NaI(Tl) 探测器测量得到的256道谱, 再由实测非弹谱确定地层中主要元素C, O, Si, Ca和Fe等对非弹γ谱的贡献分额, 利用同一地层F因子相同, 求出C产额与O产额比, C的百分含量与O的百分含量和原子含量比,及Ca和Si相应比值.
A new analyzing theory and method of C/O spectrometry logging is reported. Fast neutron enelastic scattering γ-ray spectra(256 channels) were acquired in borehole by NaI(Tl) detector. The enelastic scattering γ-ray from major elements C, O, Si, Ca, Fe, etc. have the fractions of mixed enelastic spectrum in formation respectively. Because F factor is the same for identical formation, then the ratio of yield of C to O, the ratio of weight percent of C to O, and the ratio of atoms C to O could be found, and the corresponding ratio of Ca to Si was found.
出处
《原子核物理评论》
CAS
CSCD
北大核心
2005年第1期72-75,共4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历助项目 (9612103)
