| PNST脉冲中子全谱测井仪 |
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| 引用本文： | 郑华,董建华,刘宪伟.PNST脉冲中子全谱测井仪[J].测井技术,2011,35(1):83-88. |
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| 作者姓名： | 郑华 董建华 刘宪伟 |
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| 作者单位： | 大庆油田测试技术服务分公司,黑龙江大庆,163413 |
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| 摘 要： | 传统的碳氧比测井仪不测量地层泥质含量、孔隙度等参数,影响老井饱和度评价精度,为此研制了PNST脉冲中子全谱测井仪。通过合理的传感器结构设计和电路设计,PNST一次下井能同时完成双源距碳氧比、中子寿命、脉冲中子-中子、能谱水流4项测井功能,仪器自动化程度高;测井资料能提供岩性、泥质含量、孔隙度、饱和度、层位产水等解释信息,可以不依赖裸眼井测井资料进行套管井剩余油评价。在89个21%~31%孔隙度的砂岩地层将PNST解释结果与取心资料对比,有效孔隙度标准差为1.1%,剩余油饱和度标准差为4.5%。PNST适用于在套管井中寻找油气层、确定储层含油饱和度、监测油藏动态变化。
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| 关 键 词： | 脉冲中子全谱测井仪 碳氧比 中子寿命 氧活化 动态监测 |
A New Pulsed Neutron Spectral Tool |
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| ZHENG Hua,DONG Jianhua,LIU Xianwei.A New Pulsed Neutron Spectral Tool[J].Well Logging Technology,2011,35(1):83-88. |
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| Authors: | ZHENG Hua DONG Jianhua LIU Xianwei |
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| Affiliation: | ZHENG Hua,DONG Jianhua,LIU Xianwei(Logging & Testing Services,Daqing Oilfield Company,Daqing,Heilongjiang 163413,China) |
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| Abstract: | A new pulsed neutron spectral tool(PNST) has been developed to meet the need of determining remaining oil saturations in cased wells without the assistance of open hole log.As the result of reasonable design of tool structure of the neutron generator,shield and detectors,and electrical circuits,the tool has the ability to carry out dual-spaced carbon/oxygen logging,neutron lifetime logging,pulsed neutron-neutron logging and spectral water flow logging simultaneously at one pass.Through interpreting its log,... |
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| Keywords: | pulsed neutron spectral logging tool carbon/oxygen ratio neutron lifetime oxygen activation dynamic monitoring |
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