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公开(公告)号：US20130134304A1
公开(公告)日：2013-05-30
申请号：US13304381
申请日：2011-11-24
申请人： Sicco Beekman , Tong Zhou , Christian Stoller , Fabien Haranger
发明人： Sicco Beekman , Tong Zhou , Christian Stoller , Fabien Haranger
IPC分类号： G01V5/10
摘要： Methods and systems to determine and regulate the gain of gamma-ray detectors in tools equipped with neutron sources are provided. Gain regulation may be based on the gamma ray background generated in the tool by interaction of neutrons with the nuclei of some elements constituting the tool structure. Some chemical elements that are used in construction of the tool's mechanical parts and structure result in characteristic gamma ray lines in a measured energy spectrum. These lines can be used to calibrate the energy scale of the response of the detector, without any added calibration radio isotopic source.
摘要翻译： 提供了确定和调节装备有中子源的工具中伽马射线探测器增益的方法和系统。 增益调节可以基于通过中子与构成工具结构的一些元素的核的相互作用在工具中产生的伽马射线背景。 用于构建工具的机械部件和结构的一些化学元素导致测量能谱中的特征伽马射线。 这些线路可用于校准检测器响应的能量标度，无需任何附加的校准射线同位素源。
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公开(公告)号：US20100116978A1
公开(公告)日：2010-05-13
申请号：US12268211
申请日：2008-11-10
申请人： Christian Stoller , Peter Wraight , Matthieu Simon
发明人： Christian Stoller , Peter Wraight , Matthieu Simon
摘要： Systems and methods for stabilizing the gain of a gamma-ray spectroscopy system are provided. In accordance with one embodiment, a method of stabilizing the gain of a gamma-ray spectroscopy system may include generating light corresponding to gamma-rays detected from a geological formation using a scintillator having a natural radioactivity, generating an electrical signal corresponding to the light, and stabilizing the gain of the electrical signal based on the natural radioactivity of the scintillator. The scintillator may contain, for example, naturally radioactive elements such as Lutetium or Lanthanum.
摘要翻译： 提供了用于稳定伽马射线光谱系统的增益的系统和方法。 根据一个实施例，一种稳定伽马射线光谱系统的增益的方法可以包括使用具有自然放射性的闪烁体产生对应于从地质构造检测的伽马射线的光，产生对应于光的电信号， 并且基于闪烁体的自然放射性稳定电信号的增益。 闪烁体可以含有例如天然的放射性元素如镥或镧。
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33.发明授权High voltage x-ray generator and related oil well formation analysis apparatus and method 有权高压X射线发生器及相关油井形成分析装置及方法公开(公告)号：US07668293B2
公开(公告)日：2010-02-23
申请号：US12468897
申请日：2009-05-20
CPC分类号： H01J35/06 , H01J35/14 , H01J2235/0233 , H01J2235/06 , H01J2235/163 , H05G1/02 , H05G1/10
摘要： An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 250 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.
摘要翻译： 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括能够在等于或大于125℃的温度下工作时能够提供250keV及更高能量的辐射的稳定的紧凑型X射线发生器。在另一个实施例中，辐射从X射线发生器传送到地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。
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公开(公告)号：US20090153079A1
公开(公告)日：2009-06-18
申请号：US11957228
申请日：2007-12-14
CPC分类号： H05H11/00
摘要： A Betatron having a toroidal passageway disposed in a cyclical magnetic field with a main electron orbit circumnavigating the toroidal passageway. Within the toroidal passageway is a first electrode that is spaced apart from a second electrode. The combination of the first electrode and the second electrode define a central space having a first opening and a second opening. A cathode is disposed within the central space. This cathode has a first electron emitter aligned to inject electrons through the first opening and a second electron emitter aligned to inject electrons through the second opening. Electrons injected in a proper direction are accelerated in the main electron orbit. At a time of maximum electron acceleration, the electrons are deflected and impact a target that generates x-rays on impact.
摘要翻译： 具有设置在循环磁场中的环形通道的贝塔通管，其环绕环形通道环绕主电子轨道。 在环形通道内是与第二电极间隔开的第一电极。 第一电极和第二电极的组合限定了具有第一开口和第二开口的中心空间。 阴极设置在中心空间内。 该阴极具有对准的第一电子发射体，以通过第一开口注入电子，并且第二电子发射器对准以通过第二开口注入电子。 在主电子轨道上加速沿适当方向注入的电子。 在最大电子加速时，电子被偏转并撞击在撞击时产生X射线的靶。
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35.发明申请Hermetically Sealed Packaging and Neutron Shielding for Scintillation-Type Radiation Detectors 有权用于闪烁型辐射探测器的密封封装和中子屏蔽公开(公告)号：US20090140134A1
公开(公告)日：2009-06-04
申请号：US11949942
申请日：2007-12-04
IPC分类号： G01V5/10
摘要： A well logging instrument includes a source of high energy neutrons arranged to bombard a formation surrounding the instrument. A scintillator sensitive to gamma radiation resulting from interaction of the high energy neutrons with the formation is disposed in the instrument. A neutron shielding material surrounds the scintillator. A neutron moderator surrounds the neutron shielding material. An amplifier is optically coupled to the scintillator.
摘要翻译： 测井仪器包括高能中子源，用于轰击仪器周围的地层。 仪器中设置了由高能中子与地层相互作用产生的伽马辐射敏感的闪烁体。 中子屏蔽材料围绕闪烁体。 中子减速器围绕中子屏蔽材料。 放大器光耦合到闪烁体。
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公开(公告)号：US20090045329A1
公开(公告)日：2009-02-19
申请号：US11839757
申请日：2007-08-16
申请人： Christian Stoller
发明人： Christian Stoller
IPC分类号： G01V5/10
CPC分类号： G01V5/10
摘要： A nuclear tool includes a tool housing; a d-D neutron generator disposed in the tool housing; a d-T neutron generator disposed in the tool housing; and, optionally, a control circuit for controlling pulsing of the d-D neutron generator and the d-T neutron generator. A method for well-logging using a nuclear tool includes disposing the nuclear tool in a wellbore penetrating a formation; pulsing a d-D neutron generator to emit neutrons at a first energy level into the formation; pulsing a d-T neutron generator to emit neutrons at a second energy level into the formation; and measuring signals returning from the formation.
摘要翻译： 核工具包括工具外壳; 设置在工具壳体中的d-D中子发生器; 设置在工具壳体中的d-T中子发生器; 以及可选地，用于控制d-D中子发生器和d-T中子发生器的脉冲的控制电路。 使用核工具进行测井的方法包括将核工具放置在穿透地层的井眼中; 脉冲d-D中子发生器以将第一能级的中子发射到地层中; 脉冲d-T中子发生器以在第二能级发射中子到地层中; 并测量从地层返回的信号。
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37.发明申请High Voltage X-Ray Generator and Related Oil Well Formation Analysis Apparatus and Method 有权高压X射线发生器及相关油井形成分析装置及方法公开(公告)号：US20080159480A1
公开(公告)日：2008-07-03
申请号：US11611441
申请日：2006-12-15
CPC分类号： H01J35/06 , H01J35/14 , H01J2235/0233 , H01J2235/06 , H01J2235/163 , H05G1/02 , H05G1/10
摘要： An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 260 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.
摘要翻译： 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括稳定的紧凑型x射线发生器，其能够在等于或大于125℃的温度下工作时提供260keV或更高能量的辐射。在另一个实施例中，辐射从X射线发生器传送到地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。
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公开(公告)号：US07081616B2
公开(公告)日：2006-07-25
申请号：US10734727
申请日：2003-12-12
申请人： Jim Grau , Christian Stoller , Ronald Plasek
发明人： Jim Grau , Christian Stoller , Ronald Plasek
IPC分类号： G01V5/04
CPC分类号： G01V5/101
摘要： A method for evaluating a natural gamma-ray activity within a borehole, comprises the steps of: stabilizing the gain according to a method for stabilizing a gain of a gamma-ray detector for use in a downhole logging tool; determining an interval count rate, the interval count rate corresponding to gamma-rays having an energy within a predetermined correction interval; calculating a correction count rate from the determined interval count rate; and using the correction count rate to evaluate the natural gamma-ray activity. The method for stabilizing the gain of the gamma-ray detector for use in the downhole logging tool, comprises the steps of: processing a backscatter peak of a full gamma spectrum such that the backscatter peak constitutes a reference peak; determining a first rate, the first rate corresponding to gamma-rays having an energy within a first predetermined energy interval; determining a second rate, the second rate corresponding to gamma-rays having an energy within a second predetermined energy interval; and the first predetermined energy interval and the second predetermined energy interval straddle the backscatter peak.
摘要翻译： 一种用于评估钻孔内的天然γ射线活动的方法，包括以下步骤：根据用于稳定用于井下测井工具的伽马射线探测器的增益的方法来稳定增益; 确定间隔计数率，对应于在预定校正间隔内具有能量的伽马射线的间隔计数率; 从确定的间隔计数率计算校正计数率; 并使用校正计数率来评估天然γ射线活动。 用于稳定用于井下测井工具的伽马射线探测器的增益的方法包括以下步骤：处理全伽马光谱的反向散射峰，使得后向散射峰构成参考峰; 确定第一速率，对应于具有在第一预定能量间隔内的能量的伽马射线的第一速率; 确定第二速率，所述第二速率对应于具有在第二预定能量间隔内的能量的伽马射线; 并且第一预定能量间隔和第二预定能量间隔跨越后向散射峰。
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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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40.发明授权Use of spectral information to extend temperature range of gamma-ray detector 有权使用光谱信息来扩展伽马射线探测器的温度范围公开(公告)号：US09329302B2
公开(公告)日：2016-05-03
申请号：US13629268
申请日：2012-09-27
申请人： Christian Stoller
发明人： Christian Stoller
摘要： A method is for detecting gamma rays using a gamma ray detector, and includes determining a first count of gamma rays having an energy in a first energy interval, using a controller coupled to the gamma ray detector. A second count of gamma rays having an energy in a second energy interval is determined, the second energy interval having a higher energy than the first energy interval, using the controller. A third count of gamma rays having an energy in a third energy interval is determined, the third energy interval having a higher energy than the second energy interval, using the controller. The second count of gamma rays is compensated for noise based upon a ratio of the second count and the third count, using the controller.
摘要翻译： 一种用于使用伽马射线检测器检测伽马射线的方法，并且包括使用耦合到伽马射线检测器的控制器来确定具有第一能量间隔中的能量的伽马射线的第一计数。 使用控制器确定具有第二能量间隔中的能量的伽马射线的第二计数，第二能量间隔具有比第一能量间隔更高的能量。 使用控制器确定具有第三能量间隔中的能量的伽马射线的第三计数，第三能量间隔具有比第二能量间隔更高的能量。 使用控制器，基于第二计数和第三计数的比率来补偿第二伽马射线计数的噪声。
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