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公开(公告)号：US09599729B2
公开(公告)日：2017-03-21
申请号：US14553611
申请日：2014-11-25
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.
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2.发明申请Environmental Corrections in Nuclear Spectroscopy Using Variable Shape Standard 审中-公开使用可变形状标准的核光谱学环境校正公开(公告)号：US20140138530A1
公开(公告)日：2014-05-22
申请号：US14118876
申请日：2012-05-24
发明人： James A. Grau , Jeffrey Miles , Markus Berheide
IPC分类号： G01V5/10
CPC分类号： G01V5/101
摘要： An aspect of a formation may be estimated by 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. The detected gamma-ray energy spectrum can be analyzed using a combination of standard spectra, where the shape of at least one of the standard spectra can be varied based on the environmental measurements to account for the environment's effects on gamma-ray spectra.
摘要翻译： 可以通过将包括中子源和γ射线检测器的核分析仪器放置在井眼中并执行多个环境测量来估计地层的一个方面。 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。 可以使用标准光谱的组合来分析检测到的γ射线能谱，其中至少一个标准光谱的形状可以基于环境测量而变化，以考虑环境对γ射线光谱的影响。
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3.发明申请Alpha Processing to Improve Accuracy and Precision of Elemental Concentrations from Gamma-Ray Spectroscopy 审中-公开Alpha加工，以提高伽马射线光谱的元素浓度的精度和精度公开(公告)号：US20150285943A1
公开(公告)日：2015-10-08
申请号：US14434735
申请日：2013-10-11
摘要： A method for improving precision of measurement of material composition of formations determined by gamma ray spectral an analysis includes determining an accurate value of an amount of a selected by analyzing a spectrum of gamma rays detected from the formations using a technique that directly relates the gamma ray spectrum to the amount of the material. A precise value of the amount of the material is determined by analyzing the spectrum of detected gamma rays that indirectly relates the gamma ray spectrum to the amount of the material. A function relating the accurate value to the precise value over a selected axial interval along the wellbore is determined. The function is applied to the accurate value at at least one selected axial position along the wellbore to determine an accurate and precise value of the amount of the material.
摘要翻译： 用于提高由伽马射线光谱确定的地层的材料组成的测量精度的方法包括通过使用直接将伽马射线相关的技术来分析从地层检测的伽马射线的频谱来确定所选择的量的精确值 光谱到材料的量。 通过分析间接地将伽马射线谱与材料的量相关联的检测到的伽马射线的光谱来确定材料量的精确值。 确定沿着井眼将精确值与选定的轴向间隔上的精确值相关联的函数。 该功能应用于沿着井筒的至少一个选定的轴向位置处的精确值，以确定材料量的准确和精确的值。
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公开(公告)号：US20150185358A1
公开(公告)日：2015-07-02
申请号：US14144871
申请日：2013-12-31
IPC分类号： G01V5/10
摘要： Composition-matched downhole tools and methods for using such tools are provided. One such method includes emitting neutrons using a neutron source in the downhole tool to generate formation gamma rays in a surrounding formation. At the same time, however, some of the neutrons may interact with different parts of the downhole tool to form tool gamma rays. The gamma ray spectra of at least some of the formation gamma rays and the tool gamma rays may be detected using a gamma ray detector. The tool gamma rays from the different parts of the tool may have a substantially similar spectral shape. As such, a processor may be used to analyze the spectra of the tool gamma rays using a single tool background standard, thereby simplifying the analysis and improving the precision of the results.
摘要翻译： 提供了组合匹配的井下工具和使用这种工具的方法。 一种这样的方法包括在井下工具中使用中子源发射中子，以在周围地层中产生地层γ射线。 然而，同时，一些中子可能与井下工具的不同部分相互作用，以形成工具伽马射线。 可以使用γ射线检测器检测至少一些形成γ射线和工具伽马射线的伽马射线光谱。 来自工具的不同部分的工具伽马射线可以具有基本相似的光谱形状。 因此，处理器可以用于使用单个工具背景标准来分析工具伽马射线的光谱，从而简化分析并提高结果的精度。
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公开(公告)号：US20150076337A1
公开(公告)日：2015-03-19
申请号：US14553611
申请日：2014-11-25
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：US08901483B2
公开(公告)日：2014-12-02
申请号：US13852965
申请日：2013-03-28
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：US20130214145A1
公开(公告)日：2013-08-22
申请号：US13852965
申请日：2013-03-28
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.
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公开(公告)号：US09417355B2
公开(公告)日：2016-08-16
申请号：US14144871
申请日：2013-12-31
摘要： Composition-matched downhole tools and methods for using such tools are provided. One such method includes emitting neutrons using a neutron source in the downhole tool to generate formation gamma rays in a surrounding formation. At the same time, however, some of the neutrons may interact with different parts of the downhole tool to form tool gamma rays. The gamma ray spectra of at least some of the formation gamma rays and the tool gamma rays may be detected using a gamma ray detector. The tool gamma rays from the different parts of the tool may have a substantially similar spectral shape. As such, a processor may be used to analyze the spectra of the tool gamma rays using a single tool background standard, thereby simplifying the analysis and improving the precision of the results.
摘要翻译： 提供了组合匹配的井下工具和使用这种工具的方法。 一种这样的方法包括在井下工具中使用中子源发射中子，以在周围地层中产生地层γ射线。 然而，同时，一些中子可能与井下工具的不同部分相互作用，以形成工具伽马射线。 可以使用γ射线检测器检测至少一些形成γ射线和工具伽马射线的伽马射线光谱。 来自工具的不同部分的工具伽马射线可以具有基本相似的光谱形状。 因此，处理器可以用于使用单个工具背景标准来分析工具伽马射线的光谱，从而简化分析并提高结果的精度。
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公开(公告)号：US20160187527A1
公开(公告)日：2016-06-30
申请号：US14974044
申请日：2015-12-18
发明人： Markus Berheide
IPC分类号： G01V5/08
CPC分类号： G01V5/14
摘要： Collocated radiation sensing is provided. In one possible implementation, a tool to be placed in a wellbore includes a first source of nuclear radiation and a second source of nuclear radiation. The tool also includes one or more sensors configured to discriminate between radiation emitted by the first and second sources and correctly attribute the radiation to the source from which the radiation was emitted. The one or more sensors are collocated to be within a range of radiation scattered from the first source and the second source by an environment of the formation.
摘要翻译： 提供配置的辐射感测。 在一种可能的实施方式中，放置在井眼中的工具包括第一核辐射源和第二核辐射源。 该工具还包括一个或多个传感器，其被配置为区分由第一和第二源发射的辐射，并将辐射正确地归因于辐射从其发射的源。 所述一个或多个传感器被并置在由所述地层的环境从所述第一源和所述第二源散射的辐射范围内。
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10.发明申请Combined Epithermal And Thermal Neutron Detector And Its Application To Well Logging Instruments 审中-公开组合超热和热中子检测器及其在测井仪器中的应用公开(公告)号：US20150241577A1
公开(公告)日：2015-08-27
申请号：US14571604
申请日：2014-12-16
发明人： Timothy Spillane , Zilu Zhou , Markus Berheide , Bradley Roscoe
摘要： A combined thermal neutron and epithermal neutron radiation detector includes a plurality of neutron detecting elements arranged such that a first set of the detecting elements is disposed closer to a source of neutron flux scatted from a material or formation to be analyzed than a second set of detecting elements. The neutron detecting elements have a material therein susceptible to capture of thermal neutrons for detection. Signal outputs of the first set of are interconnected and signal outputs of the second set are separately interconnected to provide a signal output corresponding to each of thermal neutron flux and epithermal neutron flux entering the detector.
摘要翻译： 组合的热中子和超热中子辐射检测器包括多个中子检测元件，其被布置成使得第一组检测元件设置成比要被分析的材料或地层散开的中子通量源比第二组检测 元素。 中子检测元件具有易于捕获用于检测的热中子的材料。 第一组的信号输出互连，第二组的信号输出分开互连，以提供对应于进入检测器的热中子通量和超热中子通量中的每一个的信号输出。
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