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公开(公告)号：US11989832B2
公开(公告)日：2024-05-21
申请号：US16971973
申请日：2019-02-04
IPC分类号： G06T17/20 , G01B11/255 , G01N21/954 , G06T5/80 , G06T17/10
CPC分类号： G06T17/20 , G01B11/255 , G01N21/954 , G06T5/80 , G06T17/10 , G01B2210/52 , G06T2200/08
摘要： A method for constructing a three-dimensional representation of an internal surface of a conduit comprises obtaining a plurality of images of the internal surface of the conduit, for example from a camera mounted on an inspection tool, constructing, from the plurality of images, a composite image of the internal surface, providing a shape model of the internal surface, constructing, using the shape model, a three-dimensional mesh of the internal surface, and constructing a three-dimensional representation of the internal surface by assigning a pixel value from the composite image to a corresponding node of the mesh. The three-dimensional representation may be derived from two or more sets of images obtained under different image acquisition conditions, such as different camera angles, lighting conditions or spectral sensitivities.
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公开(公告)号：US10725281B2
公开(公告)日：2020-07-28
申请号：US16072703
申请日：2017-01-19
发明人： Jonathan Thursby , Shaun Peck
IPC分类号： H04N7/18 , G02B23/24 , E21B47/00 , A61B1/00 , G01N21/954
摘要： An optical cap that protects a camera lens of the inspection assembly is disclosed herein. The disclosed optical cap for an inspection assembly may include an optically clear dome-shaped window element and a metal collar attached to the window element, the collar including means for securing the optical cap to said inspection assembly, wherein the collar is bonded to the window element by means of brazing or welding.
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公开(公告)号：US10508537B2
公开(公告)日：2019-12-17
申请号：US15869901
申请日：2018-01-12
发明人： Sumanth Eadala , Jonathan Thursby
IPC分类号： E21B47/12 , H04L25/03 , H04L27/148 , H04L27/34 , H03H21/00
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：US10135489B2
公开(公告)日：2018-11-20
申请号：US15446444
申请日：2017-03-01
摘要： An inspection apparatus for use in wellbores in the oil and gas industries relates in general to the field of transmission of data between downhole module in a wellbore and a controlling module at the surface. The invention provides a method and apparatus for determining analog filter parameters for an analog front end comprising a plurality of filter stages receiving signals from a telemetry module, by repeating the steps of; receiving a signal of a known frequency and processing said signal by determining the magnitude of the frequency of the received signal until a plurality of signals have been received and processed; calculating an optimum set of filter parameters in dependence upon the measured frequency magnitudes and a predefined set of filter stage frequency responses.
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公开(公告)号：US09621223B2
公开(公告)日：2017-04-11
申请号：US14769695
申请日：2014-02-28
CPC分类号： H04B3/148 , E21B47/12 , H04B3/145 , H04B3/542 , H04B3/544 , H04B2203/5458 , H04B2203/5475 , H04L25/03133 , H04L25/03878
摘要： The present invention relates to inspection apparatus for use in wellbores in the oil and gas industries. In particular the invention relates in general to the field of transmission of data between downhole module in a wellbore and a controlling module at the surface. The invention provides a method and apparatus for determining analog filter parameters for an analog front end comprising a plurality of filter stages receiving signals from a telemetry module, by repeating the steps of; receiving a signal of a known frequency and processing said signal by determining the magnitude of the frequency of the received signal until a plurality of signals have been received and processed; calculating an optimum set of filter parameters in dependence upon the measured frequency magnitudes and a predefined set of filter stage frequency responses.
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公开(公告)号：US20210088546A1
公开(公告)日：2021-03-25
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： G01P3/68 , E21B47/002 , E21B47/04
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：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：US08979401B2
公开(公告)日：2015-03-17
申请号：US13884109
申请日：2011-11-10
CPC分类号： G03B15/06 , E21B47/0002 , G02B17/00 , G02B23/2461 , G02B23/2492 , G03B15/05 , G03B37/005 , G03B2215/0539
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.
摘要翻译： 本发明涉及用于检查通道的照相机系统中使用的光学元件，用于检查通道的照相机系统以及在用相机检查期间照亮通道的方法。 用于检查通道的相机系统中的光学元件包括布置成将光透射到照相机中的第一光学部分，布置成透射从光源发射的光的第二光学部分，位于第一光学器件附近的第二光学部分 部分和屏障装置，其布置成防止光从第二光学部分传输到第一光学部分。
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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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