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公开(公告)号：US12066590B2
公开(公告)日：2024-08-20
申请号：US17715269
申请日：2022-04-07
发明人： Weihua Wang , Yunsheng Li
摘要： Systems and methods include a computer-implemented method for creating artificial real-time gamma ray (GR) images for well placement. Real-time azimuthal density data is determined from drilling of a well. An azimuthal density data set is generated using the real-time azimuthal density data. The azimuthal density data set is generated with a greater sampling rate than a real-time sampling rate of the real-time azimuthal density data. An azimuthal density curve depth match is performed using the azimuthal density data set. Performing the azimuthal density curve depth match includes creating a depth shift match table. A high-resolution sector near-bit gamma ray (GR) image is generated using the azimuthal density curve depth match and the depth shift match table. The high-resolution sector near-bit GR image is oriented to a top of a wellbore for the well.
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公开(公告)号：US08637807B2
公开(公告)日：2014-01-28
申请号：US12837450
申请日：2010-07-15
申请人： Michael Evans , Christian Stoller
发明人： Michael Evans , Christian Stoller
IPC分类号： G01V5/14
摘要： An apparatus can measure characteristics of a formation surrounding a borehole. The apparatus includes a tool body having a neutron measurement section. The neutron measurement section includes a neutron source and a neutron detector arrangement spaced in an axial direction from the neutron source The apparatus also includes a density measurement section having a gamma ray source and a gamma ray detector arrangement spaced in an axial direction from the gamma ray source. The neutron measurement section and the density measurement section are positioned in the tool body so that the sections overlap in the axial direction and are azimuthally spaced apart in the tool body. The tool body also includes shielding to block a direct signal path from the neutron source to the gamma ray detector arrangement and to block a direct signal path from the gamma ray source to the neutron detector arrangement.
摘要翻译： 设备可以测量围绕钻孔的地层的特征。 该装置包括具有中子测量部分的工具主体。 中子测量部分包括从中子源沿轴向间隔开的中子源和中子探测器装置。该装置还包括具有伽马射线源和伽马射线检测器装置的密度测量部分，该伽马射线源和伽马射线检测器装置在距离伽马射线 资源。 中子测量部分和密度测量部分位于工具主体中，使得部分在轴向方向上重叠并且在工具主体中在方位角间隔开。 工具主体还包括屏蔽以阻挡从中子源到伽马射线检测器装置的直接信号路径，并且阻挡从伽马射线源到中子探测器装置的直接信号路径。
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公开(公告)号：US20060192096A1
公开(公告)日：2006-08-31
申请号：US11307632
申请日：2006-02-15
申请人： Richard Radtke , Michael Evans , Charles Flaum
发明人： Richard Radtke , Michael Evans , Charles Flaum
IPC分类号： G01V5/14
CPC分类号： G01V5/145
摘要： A tool for formation logging includes a support configured for movement in a borehole; a source mounted on the support, the source configured to emit neutrons and gamma rays; and at least one sensor mounted on the support and spaced apart from the source, wherein the at least one sensor is configured to detect at least one selected from the group consisting of gamma rays and neutrons. A method for formation logging in accordance with one embodiment of the invention includes emitting neutrons and gamma rays into a formation, using a source on a logging tool disposed in a borehole penetrating the formation; and detecting gamma-ray signals and neutron signals scattered by the formation, using at least one detector on the logging tool.
摘要翻译： 用于地层测井的工具包括构造成在钻孔中移动的支撑件; 安装在支撑件上的源，该源被配置为发射中子和伽马射线; 以及安装在所述支撑件上并与所述源分隔开的至少一个传感器，其中所述至少一个传感器被配置为检测从由γ射线和中子组成的组中选择的至少一个。 根据本发明的一个实施例的用于地层测井的方法包括将中子和伽马射线发射到地层中，使用源于设在穿过地层的钻孔中的测井工具上的源; 以及使用测井工具上的至少一个检测器检测由地层散射的伽马射线信号和中子信号。
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公开(公告)号：US3566117A
公开(公告)日：1971-02-23
申请号：US3566117D
申请日：1968-01-05
发明人： TIXIER MAURICE P
CPC分类号： G01V5/145
摘要： A specific embodiment of the invention provides a technique for measuring the matrix composition and gas saturation of an earth formation surrounding a borehole. These parameters may be measured by combining porosity dependent signals derived from two-detector neutron porosity tool with the bulk density-related signals from a two-detector gamma-gamma mudcake compensated density tool. The combined signals produce more accurate indications of matrix lithology and gas saturation.
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5.发明授权Apparatus for simultaneous neutron and photon logging with a single detector 失效用于同时使用单个探测器进行中子和光子测井的装置
公开(公告)号：US3073958A
公开(公告)日：1963-01-15
申请号：US80995959
申请日：1959-04-30
申请人： WELL SURVEYS INC
发明人： YOUMANS ARTHUR H
IPC分类号： G01V5/14
CPC分类号： G01V5/145
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公开(公告)号：US11782181B2
公开(公告)日：2023-10-10
申请号：US16102371
申请日：2018-08-13
发明人： Ansas Matthias Kasten , Yuri Plotnikov , Sudeep Mandal , Sarah Lillian Katz , Frederick Wheeler , William Robert Ross , John Scott Price
IPC分类号： E21B47/16 , G01V5/10 , E21B47/13 , E21B47/085 , E21B47/117 , E21B47/135 , G06F17/15 , G01V1/44 , G01V3/30 , G01V5/14 , G01V8/16 , G01V11/00
CPC分类号： G01V5/107 , E21B47/085 , E21B47/117 , E21B47/13 , E21B47/135 , E21B47/16 , G01V1/44 , G01V3/30 , G01V5/10 , G01V5/145 , G01V8/16 , G01V11/00 , G06F17/15
摘要： A downhole multi-modality inspection system includes a first imaging device operable to generate first imaging data and a second imaging device operable to generate second imaging data. The first imaging device includes a first source operable to emit energy of a first modality, and a first detector operable to detect returning energy induced by the emitted energy of the first modality. The second imaging device includes a second source operable to emit energy of a second modality, and a second detector operable to detect returning energy induced by the emitted energy of the second modality. The system further includes a processor configured to receive the first imaging data and the second imaging data, and integrate the first imaging data with the second imaging data into an enhanced data stream. The processor correlates the first imaging data and the second imaging data to provide enhanced data for detecting potential wellbore anomalies.
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公开(公告)号：US20150226875A1
公开(公告)日：2015-08-13
申请号：US14179057
申请日：2014-02-12
摘要： A logging system for imaging a subterranean formation that includes radiation sources that emit different energy levels of radiation into the formation. The radiation scatters from the formation and is sensed by a single sensor that is responsive to the different energy levels of radiation. The single sensor includes a crystal which includes cesium, lithium, yttrium, cerium, and chlorine. The radiation sources emit neutron rays and gamma rays.
摘要翻译： 用于对地下地层进行成像的测井系统，其包括向地层中发射不同能量辐射能量的辐射源。 辐射从地层中散射并由对辐射的不同能级响应的单个传感器感测到。 单个传感器包括包括铯，锂，钇，铈和氯的晶体。 辐射源发射中子射线和伽马射线。
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公开(公告)号：US20150124921A1
公开(公告)日：2015-05-07
申请号：US14072119
申请日：2013-11-05
发明人： Joel Groves , Christian Stoller
摘要： A method is for creating a gamma ray source downhole by creating a radioactive material through irradiation of an inert material by high energy neutrons, wherein the material to be activated may surround the neutron source in close proximity to form a compact gamma ray source. The gamma rays generated by the activation may be used to perform nuclear measurements downhole.
摘要翻译： 一种用于通过用高能中子照射惰性材料产生放射性材料来产生射线源的方法，其中待激活的材料可以围绕中子源紧邻形成紧凑的伽马射线源。 由激活产生的伽马射线可用于在井下执行核测量。
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公开(公告)号：US20140097336A1
公开(公告)日：2014-04-10
申请号：US14103878
申请日：2013-12-12
IPC分类号： G01V5/14
摘要： An apparatus can measure characteristics of a formation surrounding a borehole. The apparatus includes a tool body having a neutron measurement section and a density measurement section. The neutron measurement section includes a neutron source and a neutron detector arrangement spaced in an axial direction from the neutron source. The density measurement section includes a gamma ray source and a gamma ray detector arrangement spaced in an axial direction from the gamma ray source. The neutron measurement section and the density measurement section are positioned in the tool body so that the sections overlap in the axial direction and are azimuthally spaced apart in the tool body. The tool body also includes shielding to block a direct signal path from the neutron source to the gamma ray detector arrangement and to block a direct signal path from the gamma ray source to the neutron detector arrangement.
摘要翻译： 设备可以测量围绕钻孔的地层的特征。 该装置包括具有中子测量部分和密度测量部分的工具主体。 中子测量部分包括在中子源的轴向上间隔开的中子源和中子探测器。 密度测量部分包括在伽马射线源的轴向上间隔开的伽马射线源和伽马射线检测器装置。 中子测量部分和密度测量部分位于工具主体中，使得部分在轴向方向上重叠并且在工具主体中在方位角间隔开。 工具主体还包括屏蔽以阻挡从中子源到伽马射线检测器装置的直接信号路径，并且阻挡从伽马射线源到中子探测器装置的直接信号路径。
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10.发明授权Radioactive borehole logging method and apparatus whereby elements of interest are determined by generating gamma rays having a predetermined critical energy such that they are resonantly scattered by said elements 失效放射性钻孔记录方法和装置，其利益的要素是通过产生具有预定关键能量的伽马射线来确定的，这些关键能量被称为元素的共同散射
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