| C/O γ能谱测井新的解析理论和方法 |
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| 引用本文： | 庞巨丰. C/O γ能谱测井新的解析理论和方法[J]. 原子核物理评论, 2005, 22(1): 72-75. DOI: 10.11804/NuclPhysRev.22.01.072 |
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| 作者姓名： | 庞巨丰 |
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| 作者单位： | 西安石油大学, 陕西 西安 710065 |
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| 基金项目： | 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) |
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| 摘 要： | 报道了快中子非弹性散射γ能谱测井(C/O γ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.
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| 关 键 词： | C/O测井 非弹γ谱 解释理论 解释方法 |
| 文章编号： | 1007-4627(2005)01-0072-04 |
| 收稿时间： | 1900-01-01 |
| 修稿时间： | 2004-08-31 |
A New Analyzing Theory and Method of C/O Spectrometry Logging |
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| PANG Ju-feng. A New Analyzing Theory and Method of C/O Spectrometry Logging[J]. Nuclear Physics Review, 2005, 22(1): 72-75. DOI: 10.11804/NuclPhysRev.22.01.072 |
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| Authors: | PANG Ju-feng |
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| Affiliation: | Xi’an Shiyou University, Xi’an, 710065, China |
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| Abstract: | 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. |
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