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公开(公告)号：US20180059283A1
公开(公告)日：2018-03-01
申请号：US15248962
申请日：2016-08-26
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Libai Xu , Jiaxin Wang
Abstract: A method for correcting natural gamma ray measurements includes processing an acquired gamma ray spectrum in combination with elemental standard spectra and at least one standard mud activation spectrum to compute corrected natural gamma ray measurements. The gamma ray spectrum is acquired using a logging string employing a neutron source and a natural gamma ray sensor.
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2.发明申请Well-Logging Tool With Azimuthal And Spectral Radiation Detectors And Related Methods 有权采用方位角和光谱辐射探测器的测井工具及相关方法公开(公告)号：US20140346336A1
公开(公告)日：2014-11-27
申请号：US13901242
申请日：2013-05-23
Applicant: Schlumberger Technology Corporation
Inventor： Cornelis Huiszoon , Libai Xu
CPC classification number: G01V5/08 , G01V5/06 , G01V13/00 , Y10T29/49826
Abstract: A well-logging tool may be positioned within a borehole of a subterranean formation. The well-logging tool may include a housing having an interior defining a dual-detector receiving chamber extending longitudinally, and having first and second portions, and a first azimuthal radiation detector carried by the first portion of the dual-detector receiving chamber. The first azimuthal radiation detector may include a first gamma-ray detector and a first photodetector associated with the first gamma-ray detector. The well-logging tool may include a second spectral radiation detector carried by the second portion of the dual-detector receiving chamber. The second spectral radiation detector may include a second gamma-ray detector and a second photodetector associated with the second gamma-ray detector.
Abstract translation: 测井工具可以定位在地层的钻孔内。 测井工具可以包括壳体，其具有限定纵向延伸并且具有第一和第二部分的双检测器接收室的内部，以及由双检测器接收室的第一部分承载的第一方位辐射检测器。 第一方位角辐射检测器可以包括第一伽马射线检测器和与第一伽马射线检测器相关联的第一光电检测器。 测井工具可以包括由双检测器接收室的第二部分承载的第二光谱辐射检测器。 第二光谱辐射检测器可以包括与第二伽马射线检测器相关联的第二伽马射线检测器和第二光电检测器。
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公开(公告)号：US10101493B2
公开(公告)日：2018-10-16
申请号：US15248962
申请日：2016-08-26
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Libai Xu , Jiaxin Wang
Abstract: A method for correcting natural gamma ray measurements includes processing an acquired gamma ray spectrum in combination with elemental standard spectra and at least one standard mud activation spectrum to compute corrected natural gamma ray measurements. The gamma ray spectrum is acquired using a logging string employing a neutron source and a natural gamma ray sensor.
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Patent Agency Ranking
公开(公告)号：US20180267199A1
公开(公告)日：2018-09-20
申请号：US15537426
申请日：2015-12-17
Applicant: Schlumberger Technology Corporation
Inventor： Libai Xu , Wei Yang , Jiaxin Wang
CPC classification number: G01V5/06 , E21B47/0002 , E21B47/12 , G01V5/045 , G01V5/12
Abstract: Methods of elemental imaging of a formation include acquiring spectral gamma ray measurement, acquiring a total gamma ray image, deriving structure information of the formation from the total gamma ray image, and applying the structure information to the spectral gamma ray measurement to form an elemental image. In the present methods, the structure information of the formation is derived from comparing the total gamma ray logs for each azimuthal sector to a derived total gamma ray log. The derived total gamma ray log is acquired from the total gamma ray image by summing over all azimuth bins or the spectral gamma ray measurement by summing over all energy bins.
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5.发明授权Well-logging tool with azimuthal and spectral radiation detectors and related methods 有权测井仪具有方位角和光谱辐射探测器及相关方法公开(公告)号：US08975574B2
公开(公告)日：2015-03-10
申请号：US13901242
申请日：2013-05-23
Applicant: Schlumberger Technology Corporation
Inventor： Cornelis Huiszoon , Libai Xu , Christian Stoller , Robert Little , Peter Wraight
CPC classification number: G01V5/08 , G01V5/06 , G01V13/00 , Y10T29/49826
Abstract: A well-logging tool may be positioned within a borehole of a subterranean formation. The well-logging tool may include a housing having an interior defining a dual-detector receiving chamber extending longitudinally, and having first and second portions, and a first azimuthal radiation detector carried by the first portion of the dual-detector receiving chamber. The first azimuthal radiation detector may include a first gamma-ray detector and a first photodetector associated with the first gamma-ray detector. The well-logging tool may include a second spectral radiation detector carried by the second portion of the dual-detector receiving chamber. The second spectral radiation detector may include a second gamma-ray detector and a second photodetector associated with the second gamma-ray detector.
Abstract translation: 测井工具可以定位在地层的钻孔内。 测井工具可以包括壳体，其具有限定纵向延伸并且具有第一和第二部分的双检测器接收室的内部，以及由双检测器接收室的第一部分承载的第一方位辐射检测器。 第一方位角辐射检测器可以包括第一伽马射线检测器和与第一伽马射线检测器相关联的第一光电检测器。 测井工具可以包括由双检测器接收室的第二部分承载的第二光谱辐射检测器。 第二光谱辐射检测器可以包括与第二伽马射线检测器相关联的第二伽马射线检测器和第二光电检测器。
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公开(公告)号：US10451766B2
公开(公告)日：2019-10-22
申请号：US15537426
申请日：2015-12-17
Applicant: Schlumberger Technology Corporation
Inventor： Libai Xu , Wei Yang , Jiaxin Wang
Abstract: Methods of elemental imaging of a formation include acquiring spectral gamma ray measurement, acquiring a total gamma ray image, deriving structure information of the formation from the total gamma ray image, and applying the structure information to the spectral gamma ray measurement to form an elemental image. In the present methods, the structure information of the formation is derived from comparing the total gamma ray logs for each azimuthal sector to a derived total gamma ray log. The derived total gamma ray log is acquired from the total gamma ray image by summing over all azimuth bins or the spectral gamma ray measurement by summing over all energy bins.
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公开(公告)号：US09823384B1
公开(公告)日：2017-11-21
申请号：US15248879
申请日：2016-08-26
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Jiaxin Wang , Libai Xu , Christian Stoller
CPC classification number: G01V5/101 , E21B47/10 , E21B47/124 , E21B49/003 , G01F1/7042
Abstract: A method for estimating a drilling fluid flow rate in a subterranean wellbore includes processing an acquired gamma ray spectrum in combination with standard elemental spectra and at least one standard oxygen activation spectrum to compute an oxygen activation yield. The oxygen activation yield is further processed to estimate a drilling fluid flow rate and or to infer a borehole diameter change or a lost circulation event. The gamma ray spectrum is acquired using a logging string employing a neutron source and a natural gamma ray sensor.
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8.发明申请Well-Logging Tool With First And Second Azimuthal Radiation Detectors And Related Methods 审中-公开第一和第二方位辐射探测器测井工具及相关方法公开(公告)号：US20140346337A1
公开(公告)日：2014-11-27
申请号：US13901329
申请日：2013-05-23
Applicant: Schlumberger Technology Corporation
Inventor： Cornelis Huiszoon , Libai Xu , Christian Stoller
CPC classification number: G01V5/08 , G01V5/06 , G01V13/00 , Y10T29/49826
Abstract: A well-logging tool may be positioned within a borehole of a subterranean formation. The well-logging tool may include a housing having an interior defining a dual-detector receiving chamber extending longitudinally, and having first and second portions, and a first azimuthal radiation detector carried by the first portion of the dual-detector receiving chamber. The first azimuthal radiation detector may include a first gamma-ray detector and a first photodetector associated with the first gamma-ray detector. The well-logging tool may include a second azimuthal radiation detector carried by the second portion of the dual-detector receiving chamber. The second azimuthal radiation detector may include a second gamma-ray detector and a second photodetector associated with the second gamma-ray detector.
Abstract translation: 测井工具可以定位在地层的钻孔内。 测井工具可以包括壳体，其具有限定纵向延伸并且具有第一和第二部分的双检测器接收室的内部，以及由双检测器接收室的第一部分承载的第一方位辐射检测器。 第一方位角辐射检测器可以包括第一伽马射线检测器和与第一伽马射线检测器相关联的第一光电检测器。 测井工具可以包括由双检测器接收室的第二部分承载的第二方位辐射检测器。 第二方位角辐射检测器可以包括与第二伽马射线检测器相关联的第二伽马射线检测器和第二光电检测器。
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