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公开(公告)号：US20110284731A1
公开(公告)日：2011-11-24
申请号：US12783207
申请日：2010-05-19
摘要： Methods and related systems are described for gamma-ray detection. A gamma-ray detector is made depending on its properties and how those properties are affected by the data analysis. Desirable properties for a downhole detector include; high temperature operation, reliable/robust packaging, good resolution, high countrate capability, high density, high Z, low radioactive background, low neutron cross-section, high light output, single decay time, efficiency, linearity, size availability, etc. Since no single detector has the optimum of all these properties, a downhole tool design preferably picks the best combination of these in existing detectors, which will optimize the performance of the measurement in the required environment and live with the remaining non-optimum properties. A preferable detector choice is one where the required measurement precision (logging speed) is obtained for all of the required inelastic elements and/or minimization of unwanted background signals that complicate the data analysis.
摘要翻译： 描述了用于伽马射线检测的方法和相关系统。 伽马射线探测器取决于其性质以及这些属性如何受数据分析的影响。 井下探测器的理想性能包括： 高温操作，可靠/坚固的包装，良好的分辨率，高计数能力，高密度，高Z，低放射性背景，低中子截面，高光输出，单衰减时间，效率，线性度，尺寸可用性等。 没有一个单一的检测器具有所有这些特性的最佳优点，井下工具设计优选地在现有检测器中选择这些的最佳组合，这将优化所需环境中的测量的性能并且与剩余的非最佳特性一起使用。 优选的检测器选择是对于所有所需的非弹性元件获得所需的测量精度（测井速度）和/或使不需要的背景信号的最小化使得数据分析复杂化的选择。
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公开(公告)号：US09304226B2
公开(公告)日：2016-04-05
申请号：US14127898
申请日：2012-06-26
摘要： Borehole logging tools and systems that include a scintillator positioned to interact with scattered source neutrons that are received from a target formation. The scintillator emits luminescence in response to interaction with the scattered neutrons. The scintillator includes an aluminofluoride host material (e.g., LiCAF). In a specific embodiment, the aluminofluoride host material is doped with europium. In a further specific embodiment, a processor distinguishes scattered neutrons from gamma rays based upon identifying a peak within an output signal from the scintillator. In yet another specific embodiment, a system includes a first scintillator and a second scintillator. The processor subtracts luminescence generated by the second scintillator from luminescence generated by the first scintillator to identify a neutron response of the first scintillator.
摘要翻译： 钻孔测井工具和系统，其包括定位成与从靶层接收的散射源中子相互作用的闪烁体。 闪烁体响应于与分散中子的相互作用发射发光。 闪烁体包括氟化铝主体材料（例如LiCAF）。 在一个具体实施方案中，所述氟化铝主体材料掺杂有铕。 在另一特定实施例中，处理器基于识别来自闪烁体的输出信号内的峰值，将散射的中子与伽马射线区分开。 在又一具体实施例中，系统包括第一闪烁体和第二闪烁体。 处理器从由第一闪烁体产生的发光中减去由第二闪烁体产生的发光，以识别第一闪烁体的中子响应。
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公开(公告)号：US08319175B2
公开(公告)日：2012-11-27
申请号：US12872355
申请日：2010-08-31
申请人： Zilu Zhou , Markus Berheide , Felix Chen , Bradley A. Roscoe , Joyce Wong , Martin G. Luling , Olivier Philip
发明人： Zilu Zhou , Markus Berheide , Felix Chen , Bradley A. Roscoe , Joyce Wong , Martin G. Luling , Olivier Philip
IPC分类号： G01V5/04
摘要： Methods and devices relating to a radiation detector comprising of a gas chamber having a cathode plate and a substrate separated by a gap. An array of nano-tips deposited on the substrate that forms an anode structure for electron charge collection. An external power source in communication with the cathode plate and the substrate, wherein the external power source is capable of generating a plurality of regions and each region includes an electric field near each nano-tip of the array of the nano-tips that results in initiating a radiation induced controlled discharge of electrons and ions from at least one gas or at least one gas mixture. Finally, the plurality of regions include multiple generated electric fields near tips of the array of nano-tips such as CNTs, that communicatively create a conductive path between the cathode plate and the substrate, the radiation detector is capable of determining at least one radiation property.
摘要翻译： 涉及辐射检测器的方法和装置，包括具有阴极板和由间隙隔开的基板的气室。 沉积在衬底上的纳米尖端的阵列，其形成用于电子电荷收集的阳极结构。 与阴极板和衬底连通的外部电源，其中外部电源能够产生多个区域，并且每个区域包括纳米尖端阵列的每个纳米尖端附近的电场，导致导致 引发辐射诱导的电子和离子从至少一种气体或至少一种气体混合物的受控放电。 最后，多个区域包括在诸如CNT之类的纳米尖端阵列的尖端附近的多个产生的电场，其在阴极板和衬底之间通信地形成导电路径，该辐射探测器能够确定至少一个辐射特性 。
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公开(公告)号：US20120049054A1
公开(公告)日：2012-03-01
申请号：US12872355
申请日：2010-08-31
申请人： Zilu Zhou , Markus Berheide , Felix Chen , Bradley A. Roscoe , Joyce Wong , Martin G. Luling , Olivier Philip
发明人： Zilu Zhou , Markus Berheide , Felix Chen , Bradley A. Roscoe , Joyce Wong , Martin G. Luling , Olivier Philip
摘要： Methods and devices relating to a radiation detector comprising of a gas chamber having a cathode plate and a substrate separated by a gap. An array of nano-tips deposited on the substrate that forms an anode structure for electron charge collection. An external power source in communication with the cathode plate and the substrate, wherein the external power source is capable of generating a plurality of regions and each region includes an electric field near each nano-tip of the array of the nano-tips that results in initiating a radiation induced controlled discharge of electrons and ions from at least one gas or at least one gas mixture. Finally, the plurality of regions include multiple generated electric fields near tips of the array of nano-tips such as CNTs, that communicatively create a conductive path between the cathode plate and the substrate, the radiation detector is capable of determining at least one radiation property.
摘要翻译： 涉及辐射检测器的方法和装置，包括具有阴极板和由间隙隔开的基板的气室。 沉积在衬底上的纳米尖端的阵列，其形成用于电子电荷收集的阳极结构。 与阴极板和衬底连通的外部电源，其中外部电源能够产生多个区域，并且每个区域包括纳米尖端阵列的每个纳米尖端附近的电场，导致导致 引发辐射诱导的电子和离子从至少一种气体或至少一种气体混合物的受控放电。 最后，多个区域包括在诸如CNT之类的纳米尖端阵列的尖端附近的多个产生的电场，其在阴极板和衬底之间通信地形成导电路径，该辐射探测器能够确定至少一个辐射特性 。
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公开(公告)号：US20100301198A1
公开(公告)日：2010-12-02
申请号：US12713746
申请日：2010-02-26
CPC分类号： G01T1/202
摘要： Methods and related systems are described for the detection of nuclear radiation. The system can include a scintillator material that intrinsically generates radiation and a photodetection system coupled to the scintillator material and adapted to generate electrical signals based on light emitted from the scintillator material. A processing system adapted and programmed to receive the electrical signals, to generate a count rate reference value based at least in part on electrical signals generated in response to the light emitted from the scintillator material due to the intrinsically generated radiation.
摘要翻译： 描述了用于检测核辐射的方法和相关系统。 该系统可以包括本质上产生辐射的闪烁体材料和耦合到闪烁体材料的光电检测系统，并适于基于从闪烁体材料发射的光产生电信号。 一种适于和编程为接收电信号的处理系统，以至少部分地基于由于本征产生的辐射而从闪烁体材料发射的光而产生的电信号产生计数速率参考值。
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6.发明授权Nuclear spectroscopy corrections using multiple standards and spatial regions 有权使用多个标准和空间区域进行核子光谱校正公开(公告)号：US08963073B2
公开(公告)日：2015-02-24
申请号：US14118871
申请日：2012-05-24
申请人： James A. Grau , Jeffrey Miles , Markus Berheide
发明人： James A. Grau , Jeffrey Miles , Markus Berheide
IPC分类号： G01V5/10
CPC分类号： G01V5/101
摘要： A method for estimating an aspect of a formation using a nuclear spectroscopy tool includes placing a nuclear spectroscopy tool including a neutron source and a gamma ray detector into a borehole and performing a plurality of environmental measurements. Neutrons are emitted from the nuclear spectroscopy tool such that some of the neutrons generate gamma rays from a formation adjacent the nuclear spectroscopy tool, some of the neutrons generate gamma rays from elements within the nuclear spectroscopy tool and some of the neutrons generate gamma rays from an element in the drilling mud. An energy spectrum of gamma rays induced by the emitted neutrons can be detected with the tool and analyzed using a combination of standard spectra including at least two sub-standards that represent a common element or group of elements and that are differentiated based on location of neutron interaction, such as where the neutrons thermalize.
摘要翻译： 使用核分析工具估计地层的方面的方法包括将包括中子源和伽马射线检测器的核谱仪器放置在钻孔中并执行多个环境测量。 中子从核分析仪器发射，使得一些中子从邻近核光谱仪的地层产生γ射线，一些中子从核分析仪器内的元素产生伽马射线，一些中子产生来自 钻井泥浆中的元素。 可以用工具检测由发射的中子引起的伽马射线的能谱，并使用标准光谱的组合进行分析，标准光谱包括至少两个代表共同元素或元素组的子标准，并基于中子的位置 相互作用，例如中子热化的地方。
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7.发明授权Environmental corrections in nuclear spectroscopy using variable element ratio 有权使用可变元素比的核子光谱中的环境校正公开(公告)号：US09541668B2
公开(公告)日：2017-01-10
申请号：US14118868
申请日：2012-05-24
申请人： James A. Grau , Jeffrey Miles , Markus Berheide
发明人： James A. Grau , Jeffrey Miles , Markus Berheide
IPC分类号： G01V5/10
摘要： A method for estimating an aspect of a formation using a nuclear spectroscopy tool includes placing a nuclear spectroscopy tool into a borehole and emitting neutrons such that some of the neutrons generate gamma rays from a formation adjacent the nuclear spectroscopy tool and some of the neutrons generate gamma rays from elements within the nuclear spectroscopy tool. An energy spectrum of gamma rays induced by the emitted neutrons can be detected. The energy spectrum includes a background having a plurality of measured spectral components. A background ratio between at least one spectral component of the background and another measured spectral component can be determined or estimated in accordance with environmental measurements. The detected gamma ray spectra can be analyzed using a combination of standard spectra and subtracting at least one spectral component of the background in accordance with the background ratio.
摘要翻译： 使用核谱分析工具估计地层的方面的方法包括将核分析仪器放置在钻孔中并发射中子，使得一些中子从邻近核分析仪的地层产生γ射线，并且一些中子产生γ 来自核分析仪器内的元素的光线。 可以检测由发射的中子引起的γ射线的能谱。 能谱包括具有多个测量的光谱分量的背景。 可以根据环境测量来确定或估计背景的至少一个光谱分量与另一测量光谱分量之间的背景比。 可以使用标准光谱的组合并根据背景比减去背景的至少一个光谱分量来分析检测到的伽马射线光谱。
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公开(公告)号：US08536517B2
公开(公告)日：2013-09-17
申请号：US12713495
申请日：2010-02-26
申请人： Markus Berheide , James A. Grau , Bradley Albert Roscoe , Christian Stoller , Peter Wraight , Matthieu Simon
发明人： Markus Berheide , James A. Grau , Bradley Albert Roscoe , Christian Stoller , Peter Wraight , Matthieu Simon
摘要： Methods and related systems are described for the detection of nuclear radiation. The system can include a tool body adapted to be deployed in a wellbore and a scintillator material that intrinsically generates radiation. The scintillator material is mounted within the tool body. A photodetection system is coupled to the scintillator material, and mounted within the tool body. Features in a spectrum associated with a scintillation material's intrinsic radioactive decay are used for the determination of one or more parameter's of the response function of the radiation detector system.
摘要翻译： 描述了用于检测核辐射的方法和相关系统。 该系统可以包括适于部署在井眼中的工具主体和本质上产生辐射的闪烁体材料。 闪烁体材料安装在工具主体内。 光检测系统耦合到闪烁体材料，并安装在工具体内。 与闪烁材料的固有放射性衰变相关的光谱中的特征被用于确定辐射探测器系统的响应函数的一个或多个参数。
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公开(公告)号：US20100243877A1
公开(公告)日：2010-09-30
申请号：US12713495
申请日：2010-02-26
申请人： Markus Berheide , James A. Grau , Bradley Albert Roscoe , Christian Stoller , Peter Wraight , Matthieu Simon
发明人： Markus Berheide , James A. Grau , Bradley Albert Roscoe , Christian Stoller , Peter Wraight , Matthieu Simon
摘要： Methods and related systems are described for the detection of nuclear radiation. The system can include a tool body adapted to be deployed in a wellbore and a scintillator material that intrinsically generates radiation. The scintillator material is mounted within the tool body. A photodetection system is coupled to the scintillator material, and mounted within the tool body. Features in a spectrum associated with a scintillation material's intrinsic radioactive decay are used for the determination of one or more parameter's of the response function of the radiation detector system.
摘要翻译： 描述了用于检测核辐射的方法和相关系统。 该系统可以包括适于部署在井眼中的工具主体和本质上产生辐射的闪烁体材料。 闪烁体材料安装在工具主体内。 光检测系统耦合到闪烁体材料，并安装在工具体内。 与闪烁材料的固有放射性衰变相关的光谱中的特征被用于确定辐射探测器系统的响应函数的一个或多个参数。
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公开(公告)号：US08546749B2
公开(公告)日：2013-10-01
申请号：US12713746
申请日：2010-02-26
CPC分类号： G01T1/202
摘要： Methods and related systems are described for the detection of nuclear radiation. The system can include a scintillator material that intrinsically generates radiation and a photodetection system coupled to the scintillator material and adapted to generate electrical signals based on light emitted from the scintillator material. A processing system adapted and programmed to receive the electrical signals, to generate a count rate reference value based at least in part on electrical signals generated in response to the light emitted from the scintillator material due to the intrinsically generated radiation.
摘要翻译： 描述了用于检测核辐射的方法和相关系统。 该系统可以包括本质上产生辐射的闪烁体材料和耦合到闪烁体材料的光电检测系统，并适于基于从闪烁体材料发射的光产生电信号。 一种适于和编程为接收电信号的处理系统，以至少部分地基于由于本征产生的辐射而从闪烁体材料发射的光而产生的电信号产生计数速率参考值。
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