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公开(公告)号：US11143786B2
公开(公告)日：2021-10-12
申请号：US16466920
申请日：2018-07-05
发明人： Shouxiang Mark Ma , Nacer Guergueb , Weijun Guo
IPC分类号： G01V5/14 , G01V5/04 , G01V5/10 , G01V5/12 , E21B47/085
摘要： The disclosure provides methods of measuring an intrinsic CO ratio in a geological formation by disposing, proximate the formation, a petrophysical tool including at least one gamma-ray detector, reading a carbon gamma-ray peak for the geological formation and an oxygen gamma-ray peak for the geological formation, determining a measured CO ratio of the geological formation from the carbon gamma-ray peak and the oxygen gamma-ray peak, and correcting the measured CO ratio by applying a corrective algorithm specific for the petrophysical tool or the type of petrophysical tool to obtain an intrinsic CO ratio of the geological formation. The corrective algorithm is derived by a mathematical analysis of measured CO ratios of a sample with a known intrinsic CO ratio using the same petrophysical tool or a petrophysical tool representative of a same type of petrophysical tool. Additional methods and systems using this method are provided.
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公开(公告)号：US10884158B2
公开(公告)日：2021-01-05
申请号：US16102323
申请日：2018-08-13
IPC分类号： G01V1/40 , G01V5/10 , E21B47/13 , E21B47/085 , E21B47/117 , E21B47/135 , G06F17/15 , E21B47/16 , G01V1/44 , G01V3/30 , G01V5/14 , G01V8/16 , G01V11/00
摘要： A downhole inspection system includes a neutron imaging device operable to generate data for detecting potential wellbore anomalies and an electromagnetic imaging device operable to generate data for detecting potential wellbore eccentricity. The neutron imaging device includes a neutron generator operable to emit neutrons, and a neutron detector fixed relative to the neutron generation unit and operable to detect backscattered neutrons from a surrounding environment. The electromagnetic imaging device includes at least one transmitter for generating electromagnetic pulse, and at least one receiver for detecting returning electromagnetic pulse. Correlation of the neutron imaging data with the electromagnetic imaging data provides additional data regarding the potential wellbore anomalies.
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公开(公告)号：US10732317B2
公开(公告)日：2020-08-04
申请号：US16102221
申请日：2018-08-13
IPC分类号： G01V5/10 , E21B47/08 , E21B47/10 , E21B47/12 , G06F17/15 , E21B47/16 , G01V1/44 , G01V3/30 , G01V5/14 , G01V8/16 , G01V11/00
摘要： A wellbore inspection device includes a radiation generation source operable to emit neutrons, and a radiation detector fixed relative to the radiation generation source and operable to detect backscattered neutron radiation from a surrounding environment. The radiation detector includes a plurality of individually addressable detector elements arranged in one or more concentric rings. Respective amounts of backscattered neutron radiation detected by the individually addressable detector elements within a ring is indicative of the azimuthal direction of the detected backscattered neutron radiation, and the respective amount of backscattered neutron radiation detected by the individually addressable detector elements of two or more concentric rings is indicative of an energy level of the backscattered neutron radiation. The inspection device determines whether a potential anomaly is present in or around the wellbore, based at least in part on the respective amounts of backscattered radiation detected by the individually addressable detector elements.
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公开(公告)号：US20190049622A1
公开(公告)日：2019-02-14
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
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：US08923478B2
公开(公告)日：2014-12-30
申请号：US13501874
申请日：2010-10-12
申请人： Stephen Knight , Stephen G. Drake
发明人： Stephen Knight , Stephen G. Drake
CPC分类号： G01N23/18 , G01N2223/628
摘要： An apparatus is provided for x-ray inspection of a pipeline girth weld. This comprises a directional x-ray source 5 which is insertable into a pipeline section and is rotatable within the pipeline. Means are provided to align the directional x-ray source with an external x-ray detector such that both may be rotated through 360 degrees substantially coaxially with the pipeline section. Means for sampling the data detected by the x-ray detector are provided so that it may be further analyzed.
摘要翻译： 提供了一种用于管道环形焊缝的X射线检查的装置。 这包括可插入到管道部分中并且可在管道内旋转的定向x射线源5。 提供了用于使定向x射线源与外部X射线检测器对准的装置，使得两者可以与管线部分大致同轴旋转360度。 提供了用于对由X射线检测器检测到的数据进行采样的装置，以便进一步分析。
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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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公开(公告)号：US3942004A
公开(公告)日：1976-03-02
申请号：US470542
申请日：1974-05-16
申请人： Paul Kehler
发明人： Paul Kehler
摘要： A dual spaced neutron well logging instrument and method utilizing a pair of alternately operated neutron sources and a pair of detectors, said dual spaced neutron well logging instrument being able to measure the porosity of earth formations penetrated by a borehole substantially independent of the thickness and the chemical composition of the mudcake, the cement liner, the well casing, the drilling mud and the diameter of the borehole.
摘要翻译： 一种双重间隔的中子测井仪器和方法，利用一对交替操作的中子源和一对检测器，所述双重间隔的中子测井仪器能够测量基本上与厚度无关的钻孔渗透的地层的孔隙度， 泥浆的化学成分，水泥衬套，井套管，钻井泥浆和钻孔直径。
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公开(公告)号：US3546454A
公开(公告)日：1970-12-08
申请号：US3546454D
申请日：1967-11-29
申请人： SCHLUMBERGER LTD
发明人： SCHUSTER NICK A
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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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