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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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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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5.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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6.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：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：US20160195636A1
公开(公告)日：2016-07-07
申请号：US12996533
申请日：2009-06-29
申请人： Jim A. Grau , Markus Berheide , Christian Stoller , Brad Roscoe , James Thornton
发明人： Jim A. Grau , Markus Berheide , Christian Stoller , Brad Roscoe , James Thornton
IPC分类号： G01V5/10
CPC分类号： G01V5/104
摘要： Systems and methods for estimating absolute elemental concentrations of a subterranean formation from neutron-induced gamma-ray spectroscopy are provided. In one example, a system for estimating an absolute yield of an element in a subterranean formation may include a downhole tool and data processing circuitry. The downhole tool may include a neutron source to emit neutrons into the formation, a neutron monitor to detect a count rate of the emitted neutrons, and a gamma-ray detector to obtain gamma-ray spectra deriving at least in part from inelastic gamma-rays produced by inelastic scattering events and neutron capture gamma-rays produced by neutron capture events. The data processing circuitry may be configured to determine a relative elemental yield from the gamma-ray spectra and to determine an absolute elemental yield based at least in part on a normalization of the relative elemental yield to the count rate of the emitted neutrons.
摘要翻译： 提供了用于从中子诱导的γ射线光谱估计地下地层的绝对元素浓度的系统和方法。 在一个示例中，用于估计地下地层中的元素的绝对产量的系统可以包括井下工具和数据处理电路。 井下工具可以包括将中子发射到地层中的中子源，用于检测发射的中子的计数速率的中子监测器，以及γ射线检测器，以获得至少部分地从非弹性γ射线得到的γ射线谱 由非弹性散射事件和中子俘获伽马射线产生的中子捕获事件。 数据处理电路可以被配置为确定来自伽马射线光谱的相对元素产量，并且至少部分地基于相对元素产量与发射中子的计数率的归一化来确定绝对元素产量。
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9.发明申请公开(公告)号：US20120187081A1
公开(公告)日：2012-07-26
申请号：US13321547
申请日：2010-05-18
申请人： Olivier G. Philip , Markus Berheide
发明人： Olivier G. Philip , Markus Berheide
CPC分类号： G01T1/2002 , Y10T83/0341
摘要： The invention provides a method for optimizing the spectroscopy performance of a spectroscopy scintillator by surrounding the scintillator by a reflector material, performing a scan or more sectors measuring resolution and light output at three or more axial locations on the crystal, where at least one location is close to the PMT or below the crystal (near the PMT) at least one location is at the end away from the PMT of the scintillator), and adjusting the surface finish of the crystal and/or the reflector to obtain equal light output and optimal resolution over the length and different azimuth of the crystal.
摘要翻译： 本发明提供了一种用于通过用反射器材料围绕闪烁体来优化光谱闪烁器的光谱性能的方法，在晶体上的三个或更多个轴向位置执行扫描或更多扇区测量分辨率和光输出，其中至少一个位置是 靠近PMT或低于晶体（靠近PMT），至少一个位置离闪烁体的PMT的端部），并且调整晶体和/或反射器的表面光洁度以获得相等的光输出和最优 分辨率超过晶体的长度和不同方位。
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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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