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公开(公告)号：US11649715B2
公开(公告)日：2023-05-16
申请号：US16971931
申请日：2019-02-04
发明人： Steven Helmore , Christopher Scott , Jonathan Thursby , Philip Brown , Fraser Louden , Tobben Tymons
IPC分类号： E21B47/00 , E21B47/002 , E21B47/04 , G01P3/68
CPC分类号： E21B47/002 , E21B47/04 , G01P3/68
摘要： A method for determining a corrected axial displacement parameter of a conduit inspection tool, in particular a downhole inspection tool, during transit of the tool axially along a conduit is disclosed. The tool used in the method has an imaging device and may be attached to a control module with a connecting line. The method comprises obtaining successive axially overlapping images of an internal wall of the conduit, determining, from the images, an observed axial displacement parameter of the tool as a function of transit time, identifying, in the images, a plurality of reference points, determining an estimated axial displacement parameter of the tool over an of transit time between successive reference points, and computing the corrected axial displacement parameter of the tool by applying a correction factor to the observed axial velocity of the tool.
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公开(公告)号：US10545330B2
公开(公告)日：2020-01-28
申请号：US16062413
申请日：2016-12-13
发明人： Jonathan Thursby , Shaun Peck
IPC分类号： G02B13/06 , G02B23/24 , G01N21/954
摘要： This invention relates to an inspection assembly comprising a light source and a lens. In particular this invention relates to the provision of a reflection surface for improving the illumination of a field of view of a wide angle camera. An inspection assembly comprises a main body having a longitudinal axis and a distal end; a lens located at the distal end; a light source positioned to illuminate an area beyond the distal end of the main body; and a reflection surface, an angle between the reflection surface and the longitudinal axis of the main body being between 10° and 70°, wherein the reflection surface is positioned such that, in use, a first fraction of the light emitted by the light source is reflected by the reflection surface and a second fraction of the light emitted by the light source travels to an area beyond the distal end of the main body without being reflected by said surface.
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公开(公告)号：US20180245457A1
公开(公告)日：2018-08-30
申请号：US15869901
申请日：2018-01-12
发明人： Sumanth Eadala , Jonathan Thursby
IPC分类号： E21B47/12 , H04L27/148 , H04L25/03 , H04L27/34
CPC分类号： E21B47/12 , H03H2021/0092 , H04L25/03019 , H04L25/0305 , H04L25/03885 , H04L27/148 , H04L27/34 , H04L2025/03636
摘要： This invention is designed for use in transmission of data between downhole module in a wellbore and a controlling module at the surface. The invention provides an apparatus for receiving data signals from a telemetry module comprising first and second adaptive equalisers, and in which in a first modulation mode the coefficients of the first adaptive equaliser are updated until an error signal falls below a predetermined threshold and in a second modulation mode the coefficients of the first adaptive equaliser are locked and coefficients of the second adaptive equaliser are updated to continually minimise an error signal in which the number of bits encoded by the symbols of the first signal in an initial modulation mode is fewer than the number of bits encoded by the symbols of the second signal in a subsequent modulation mode.
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公开(公告)号：US09810595B2
公开(公告)日：2017-11-07
申请号：US14944776
申请日：2015-11-18
发明人： Jonathan Thursby , Shaun Peck , Chris Jay
IPC分类号： G01M1/00 , G01M3/00 , F16L55/1645 , G01M3/18 , F16L55/26 , F16L55/38 , F16L55/28 , F16L101/30
CPC分类号： G01M3/005 , F16L55/16455 , F16L55/26 , F16L55/28 , F16L55/38 , F16L2101/30 , G01M1/00 , G01M3/00 , G01M3/183
摘要： A pipeline inspection apparatus includes a main body. A sealing structure attached to the main body seals against an internal surface of the pipeline. An imaging module includes a camera and a light source. The light source is arranged to emit light in a direction towards the internal surface of the pipeline. The camera is arranged such that, in use, the camera captures image data of the internal surface of the pipeline. Control circuitry includes a power supply and memory for storing data captured by said camera, wherein the sealing structure forms a seal against the internal surface of the pipeline such that, in use, a fluid flowing along the pipeline applies a driving force to the pipeline inspection apparatus to propel the apparatus along the pipeline.
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公开(公告)号：US20160069769A1
公开(公告)日：2016-03-10
申请号：US14944776
申请日：2015-11-18
发明人： Jonathan Thursby , Shaun Peck , Chris Jay
CPC分类号： G01M3/005 , F16L55/16455 , F16L55/26 , F16L55/28 , F16L55/38 , F16L2101/30 , G01M1/00 , G01M3/00 , G01M3/183
摘要： A pipeline inspection apparatus includes a main body. A sealing structure attached to the main body seals against an internal surface of the pipeline. An imaging module includes a camera and a light source. The light source is arranged to emit light in a direction towards the internal surface of the pipeline. The camera is arranged such that, in use, the camera captures image data of the internal surface of the pipeline. Control circuitry includes a power supply and memory for storing data captured by said camera, wherein the sealing structure forms a seal against the internal surface of the pipeline such that, in use, a fluid flowing along the pipeline applies a driving force to the pipeline inspection apparatus to propel the apparatus along the pipeline.
摘要翻译： 管道检查装置包括主体。 附接到主体的密封结构密封在管道的内表面上。 成像模块包括照相机和光源。 光源设置成朝向管道内表面的方向发光。 相机被布置成使得在使用中相机捕获管道内表面的图像数据。 控制电路包括用于存储由所述照相机捕获的数据的电源和存储器，其中所述密封结构形成对所述管道的内表面的密封，使得在使用中，沿着所述管道流动的流体向所述管道检查施加驱动力 沿管道推进装置的装置。
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公开(公告)号：US11828157B2
公开(公告)日：2023-11-28
申请号：US16971948
申请日：2019-02-04
发明人： Christopher Scott , Philip Brown , Steven Helmore , Jonathan Thursby , David Tynewydd , James Crisafulli
CPC分类号： E21B47/002 , G06T5/006 , G06T5/50 , G06T7/248 , G06T7/60 , G06T7/74 , H04N23/90 , G06T2207/30204 , G06T2207/30241 , H04N23/555
摘要： Methods for correcting for non-centred tool geometry in image data obtained by a conduit inspection tool are disclosed. Embodiments of the invention apply to inspection tools with one or multiple sideview cameras and to inspection tools with downview cameras. The methods include obtaining at least two overlapping images of the internal surface of the conduit using the tool, identifying one or more features common to at least a pair of the overlapping images, determining, based on the positions of the or each common feature, the position of the tool with respect to a longitudinal axis of the conduit, determining a correction function based on the position of the tool and applying the correction function to the image data. Methods for determining the dimension of a feature of interest on the internal surface of the conduit are also disclosed.
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公开(公告)号：US11174719B2
公开(公告)日：2021-11-16
申请号：US16479074
申请日：2018-01-19
IPC分类号： E21B47/00 , H04N5/225 , H04N5/247 , G03B37/00 , E21B47/002
摘要： The field of inspection assemblies and in particular to inspection assemblies that include light sources for illuminating a field of view of a camera including an elongate housing having a longitudinal axis, a camera mounted in the housing and arranged to capture an image of a region within a field of view external to the housing, a light source mounted in the housing and arranged to illuminate the field of view, and a window element mounted in the housing, the window element comprising a light transmitting material and being located such that light emitted by the light source passes through the window element before illuminating the field of view. The window element has an internal surface, closer to the light source, and an external surface, further from the light source, and the external surface comprises a concave region.
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公开(公告)号：US10885649B2
公开(公告)日：2021-01-05
申请号：US16307694
申请日：2018-08-03
摘要： A method of constructing a three-dimensional model of an internal surface of a tubular structure comprises obtaining image data from an area of the internal surface of the structure, obtaining measured height profile data from the internal surface in a plurality of sub-regions of the area, for example using a multi-finger caliper tool, determining image properties from the image data, correlating the measured height profile data with the image properties in the sub-regions, and constructing expected height profile data for at least part of the area outside the sub-regions using the correlated measured height profile data and image properties.
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公开(公告)号：US10133055B2
公开(公告)日：2018-11-20
申请号：US14584106
申请日：2014-12-29
摘要： The present invention relates to an optical element for use in a camera system for the inspection of passageways, a camera system for the inspection of passageways and a method of illuminating a passageway during inspection with a camera. An optical element for use in a camera system for the inspection of passageways comprises a first optical portion arranged to transmit light into a camera, a second optical portion arranged to transmit light emitted from a light source, the second optical portion located adjacent the first optical portion, and barrier means arranged to prevent light being transmitted from the second optical portion into the first optical portion.
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公开(公告)号：US09787881B2
公开(公告)日：2017-10-10
申请号：US14387167
申请日：2013-03-11
CPC分类号： H04N5/2252 , E21B47/0002 , G03B37/005 , H04N7/183
摘要： A camera assembly (10) for the inspection of passageways, particularly wellbores, and designed to operate in high temperature environments. A camera assembly for the inspection of wellbores comprises an elongate housing (12) having a first end (30) and a second end (42) and, extending between the ends, a side wall comprising an inner wall (22) and an outer wall (24), with a vacuum formed between the inner and outer walls; an elongate relay lens (52) having a first end (56) and a second end (62), the relay lens being located within the housing; an optically transparent window (46) located at the first end of the relay lens; an image sensor (48) located at the second end of the relay lens for capturing an image of an object viewable through the relay lens and window; and a light source (16) arranged to emit light from the housing, for illuminating the viewable object.
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