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公开(公告)号：US09690006B2
公开(公告)日：2017-06-27
申请号：US14758700
申请日：2014-01-21
发明人： Dongwon Lee , Weijun Guo
摘要： Embodiments of the invention provide a downhole tool that includes a photon source, a photon detector having a plurality of detector pixels in a cylindrical row and column arrangement, and a radial collimator having at least two concentric frustoconical collimators circumferentially arranged about the photon detector and at least two azimuthal collimating members radially arranged with respect to the photon detector, wherein one of the azimuthal collimating members is on a first side of a detector pixel and a second azimuthal collimator is on a second side of a detector pixel opposite the first side.
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公开(公告)号：US09658361B2
公开(公告)日：2017-05-23
申请号：US13016336
申请日：2011-01-28
申请人： Loren P. Roberts
发明人： Loren P. Roberts
CPC分类号： G01V5/104
摘要： The present disclosure relates to borehole logging methods and apparatuses for estimating formation properties using nuclear radiation, particularly an apparatus and method for estimating a formation lithology parameter. The method may include using gamma ray count or count rate information to estimate a formation lithology parameter that may be one of, but not limited to: Z2/A, bulk density, Z2*bulk density/A, linear attenuation coefficients, and porosity. The method may include using time-dependent ratios with a pulsed radiation source. The method may also include dividing gamma ray information by time and/or by energy window. The apparatus includes a processor and storage subsystem with a program that, when executed, implements the method.
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公开(公告)号：US20170097443A1
公开(公告)日：2017-04-06
申请号：US15379468
申请日：2016-12-14
CPC分类号： G01V15/00 , E21B43/16 , E21B47/1015 , G01N23/223 , G01N33/2882 , G01V5/125
摘要： A system and method of injection well identification using tracer particles is disclosed. A collector-reader for analyzing magnetic particles in a fluid that is moving with respect to the collector-reader includes an array of magnets whose magnetization direction is varied so as to create regions of high magnetic field gradient in the fluid, a stopper configured to concentrate spatially the particles attracted to the array, and a reader including a source configured to excite the particles concentrated by the stopper and a detector configured to capture a particle excitation signature emitted by the magnetic particles. A method for observing a subterranean reservoir penetrated by a production well and two or more injection wells is also disclosed.
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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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公开(公告)号：US20160320497A1
公开(公告)日：2016-11-03
申请号：US15026167
申请日：2014-11-10
发明人： Yike Hu , Weijun Guo
CPC分类号： G01V5/12 , G01T1/1648 , G01T1/2018 , G21K1/02
摘要： In some embodiments, an apparatus and a system, as well as a method and an article, may operate to receive energy impinging on an outer surface of a photon detector having a columnar structure, and to direct the energy within the columnar structure to a position-sensitive readout to image the energy, wherein the position-sensitive readout has position-sensitive elements, and wherein individual ones of the elements are associated with at least one column in the columnar structure to provide intrinsic collimation of the energy from the outer surface to selected portions of the readout. Additional apparatus, systems, and methods are described.
摘要翻译： 在一些实施例中，装置和系统以及方法和制品可以操作以接收冲击在具有柱状结构的光子检测器的外表面上的能量，并且将柱状结构内的能量引导到位置 敏感读出以对能量进行成像，其中位置敏感读数具有位置敏感元件，并且其中单个元件与柱状结构中的至少一个柱相关联，以提供来自外表面的能量的内在准直 读出的所选部分。 描述了附加装置，系统和方法。
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66.发明授权X-ray generator having multiple extractors with independently selectable potentials 有权X射线发生器具有多个提取器，具有独立可选择的电位公开(公告)号：US09448327B2
公开(公告)日：2016-09-20
申请号：US14108244
申请日：2013-12-16
发明人： Luke Perkins
CPC分类号： G01V5/12 , H01J35/04 , H01J35/045 , H01J35/30
摘要： A logging tool is for determining a property of a subsurface formation having a borehole therein and includes a housing to fit within the borehole. An x-ray generator is carried by the housing and includes at least three extractor electrodes, an electron emitter to emit electrons toward the extractor electrodes, and a target downstream of the extractor electrodes. The extractor electrodes have independently selectable potentials so as to allow direction of an electron beam, formed from the electrons emitted by the electron emitter, toward different longitudinal and lateral regions of the target, the target to emit x-rays into the subsurface formation when struck by the electron beam. A radiation detector is carried by the housing to detect incoming radiation resulting from interactions between the x-rays and the subsurface formation. Processing circuitry is coupled to the radiation detector to determine the property of the subsurface formation based upon detected incoming radiation.
摘要翻译： 测井工具用于确定其中具有钻孔的地下地层的特性，并且包括适合于钻孔内的壳体。 X射线发生器由壳体承载，并且包括至少三个提取器电极，向提取器电极发射电子的电子发射器，以及提取器电极下游的靶。 提取器电极具有可独立选择的电位，以允许由电子发射器发射的电子形成的电子束朝向目标的不同纵向和横向区域的方向，目标在被击打时将x射线发射到地下地层 通过电子束。 辐射检测器由壳体承载以检测由x射线和地下地层之间的相互作用产生的入射辐射。 处理电路耦合到辐射检测器，以基于检测到的入射辐射来确定地下地层的性质。
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公开(公告)号：US20160162610A1
公开(公告)日：2016-06-09
申请号：US14561662
申请日：2014-12-05
发明人： Michael Anthony Lexa , Meena Ganesh , John Brandon Laflen , John Edward Smaardyk , Donald Kenney Steinman
CPC分类号： G06F17/5009 , G01V5/045 , G01V5/12 , G01V5/125 , G06F17/18
摘要： A method implemented using one or more computer processors for estimating the density of a material in an annular space includes receiving detector data representative of scattered photons resulting from interaction of a material in an annular space with radiation from a radiation source and detected by a plurality of radiation detectors. The technique further includes performing a set of Monte Carlo simulations. The method further includes performing a principal component analysis on the set of Monte Carlo simulations to generate a principal component analysis model of the detector data. The method also includes estimating the density of the material at one or more locations within the annular space based upon the principal component analysis model and the detector data.
摘要翻译： 使用一个或多个计算机处理器实现的用于估计环形空间中的材料的密度的方法包括接收检测器数据，其表示由环形空间中的材料与来自辐射源的辐射的相互作用产生的散射光子，并且由多个 辐射探测器。 该技术还包括执行一组蒙特卡罗模拟。 该方法还包括对蒙特卡罗模拟集进行主成分分析以产生检测器数据的主成分分析模型。 该方法还包括基于主成分分析模型和检测器数据估计环形空间内的一个或多个位置处的材料的密度。
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68.发明申请METHOD AND SYSTEM FOR EVALUATION OF GAMMA-GAMMA WELL LOGGING DATA IN MINERAL EXPLORATION 有权矿物探测中伽玛 - 伽马井记录数据的评估方法与系统公开(公告)号：US20150316681A1
公开(公告)日：2015-11-05
申请号：US14701210
申请日：2015-04-30
申请人： VALE S.A.
发明人： Wanderson Roberto PEREIRA , Dionisio Uendro Carlos , Marco Antônio de Silva Braga , Henry Francisco Galbiatti
摘要： A calibration site for a gamma-gamma well logging tool for use in mineral exploration, the calibration site having a column consisting of a plurality of blocks of known densities; and a borehole through the column configured to accept the gamma-gamma well logging tool. Further, a method for calibrating a gamma-gamma well logging tool at the calibration site, the method including lowering the gamma-gamma well logging tool into a column consisting of a plurality of blocks of different known densities and having a borehole therein to receive the gamma-gamma well logging tool; raising the gamma-gamma well logging tool at a set rate; capturing a radiation count at a sensor of the gamma-gamma well logging tool; converting the radiation count to a recorded density for a particular depth at a computing device; and comparing the recorded density at each position of the column with the known densities.
摘要翻译： 用于矿物勘探的用于伽马测井工具的校准位置，校准位置具有由多个已知密度的块组成的列; 以及通过该柱的钻孔，被配置为接受γ-γ测井工具。 此外，一种用于在校准位置校准伽马伽马测井工具的方法，所述方法包括将伽马伽马测井工具降低到由多个不同已知密度的块组成的柱中，并且在其中具有钻孔以接收 伽马测井仪; 以设定的速率提高伽马伽马测井工具; 捕获γ伽马测井工具的传感器处的辐射计数; 在计算设备处将辐射计数转换成特定深度的记录密度; 并将柱的每个位置处的记录密度与已知密度进行比较。
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公开(公告)号：US09035237B2
公开(公告)日：2015-05-19
申请号：US13720975
申请日：2012-12-19
摘要： Systems and methods are provided for determining a property, e.g., density, of a geological formation based on Einstein's theory of gravitation. A gravitational potential difference is determined between two positions of the geological formation by measuring a frequency shift of radiation travelling from a source to an absorber of a differential gravimeter. The differential gravimeter can be a part of a downhole tool. The gravitational potential difference determined can be used to determine the property of the geological formation.
摘要翻译： 提供了基于爱因斯坦引力理论确定地质构造的性质，例如密度的系统和方法。 通过测量从源到差压重力仪的吸收器的辐射的频移，确定地质构造的两个位置之间的重力势差。 差速重力计可以是井下工具的一部分。 确定的重力电位差可用于确定地质构造的性质。
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70.再颁专利Borehole measurements using a fast and high energy resolution gamma ray detector assembly 有权使用快速和高能量分辨率伽马射线探测器组件进行钻孔测量公开(公告)号：USRE45226E1
公开(公告)日：2014-11-04
申请号：US13967230
申请日：2013-08-14
发明人： Richard C. Odom
IPC分类号： G01V5/12
摘要： A gamma ray detector assembly for a borehole logging system that requires the measure of gamma radiation with optimized gamma ray energy resolution and with fast emission times required to obtain meaningful measurements in high radiation fields. The detector assembly comprises a lanthanum bromide (LaBr3) scintillation crystal and a digital spectrometer that cooperates with the crystal to maximize pulse processing throughput by digital filtering and digital pile-up inspection of the pulses. The detector assembly is capable of digital pulse measurement and digital pile-up inspection with dead-time less than 600 nanoseconds per event. Pulse height can be accurately measured (corrected for pile-up effects) for 2 pulses separated by as little as 150 nanoseconds. Although the invention is applicable to virtually any borehole logging methodology that uses the measure of gamma radiation in harsh borehole conditions, the invention is particularly applicable to carbon/oxygen logging.
摘要翻译： 一种用于钻孔测井系统的伽马射线探测器组件，其需要具有优化的伽马射线能量分辨率和具有在高辐射场中获得有意义的测量所需的快速发射时间的伽马辐射测量。 检测器组件包括溴化镧（LaBr3）闪烁晶体和与晶体配合的数字光谱仪，以通过脉冲的数字滤波和数字堆积检查来最大化脉冲处理吞吐量。 检测器组件能够进行数字脉冲测量和数字堆积检查，死区时间小于每个事件600纳秒。 脉冲高度可以精确测量（对于堆积效应进行校正），对于两分之一短达150纳秒的脉冲。 尽管本发明可应用于在苛刻井眼条件下使用伽马射线测量的几乎任何钻孔测井方法，但本发明特别适用于碳/氧测井。
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