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公开(公告)号：US10663611B2
公开(公告)日：2020-05-26
申请号：US15543250
申请日：2016-01-15
发明人： Jean-Christophe Auchere , Henri-Pierre Valero , Remi Ounadjela , Hiroshi Nakajima , Alexis Pibrac
摘要： Methods and systems of measuring acoustic signals via a borehole wall are disclosed. One or more non-contact magneto-dynamic sensors are configured or designed for deployment at at least one depth in a borehole. The magneto-dynamic sensor comprises a coil excited by an electric current and a circuitry for outputting a signal corresponding to a time-varying impedance of the coil. A processor is configured to perform signal processing for deriving at least one of a magnitude or a frequency of vibration of the borehole wall based on the output signal from the circuitry.
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公开(公告)号：US20190226323A1
公开(公告)日：2019-07-25
申请号：US15877263
申请日：2018-01-22
摘要： Apparatus and methods for identifying drilling cuttings downhole by extracting an echo from a pulse-echo waveform acquired utilizing a downhole ultrasonic tool having an acoustic device. An energy before echo profile preceding the extracted echo is determined, and then the energy before echo profile is processed to remove effects associated with the acoustic device. A cutting is then identified from the processed energy before echo profile.
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公开(公告)号：US20220251946A1
公开(公告)日：2022-08-11
申请号：US17660845
申请日：2022-04-27
摘要： Methods, apparatus, systems, and articles of manufacture are disclosed to measure a formation feature. An example apparatus includes a pre-processor to compare a first measurement obtained from a first sensor included in a logging tool at a first depth at a first time and a second measurement obtained from a second sensor included in the logging tool at the first depth at a second time. The example apparatus also include a semblance calculator to: calculate a correction factor based on a difference between the first measurement and the second measurement; and calculate a third measurement based on the correction factor and a fourth measurement obtained from the first sensor at a second depth at the second time. The example apparatus also includes a report generator to generate a report including the third measurement.
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公开(公告)号：US10884151B2
公开(公告)日：2021-01-05
申请号：US15877263
申请日：2018-01-22
IPC分类号： G01V1/50 , G01V1/48 , E21B47/095
摘要： Apparatus and methods for identifying drilling cuttings downhole by extracting an echo from a pulse-echo waveform acquired utilizing a downhole ultrasonic tool having an acoustic device. An energy before echo profile preceding the extracted echo is determined, and then the energy before echo profile is processed to remove effects associated with the acoustic device. A cutting is then identified from the processed energy before echo profile.
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公开(公告)号：US09441475B2
公开(公告)日：2016-09-13
申请号：US13682697
申请日：2012-11-20
CPC分类号： E21B47/011 , E21B36/001
摘要： A downhole assembly may include a housing having an outer surface and an inner surface, the outer surface adapted for contact with a downhole fluid, the inner surface defining an interior volume. One or more heat producing components may be disposed within the interior volume and in thermal contact with a structural component (e.g., chassis). One or more thermal dissipation members may be disposed within the housing, the one or more thermal dissipation members in thermal contact with the chassis and in thermal contact with the inner surface of the housing.
摘要翻译： 井下组件可以包括具有外表面和内表面的壳体，外表面适于与井下流体接触，内表面限定内部体积。 一个或多个发热部件可以设置在内部容积内并与结构部件（例如底盘）热接触。 一个或多个散热构件可以设置在壳体内，一个或多个散热构件与底座热接触并与壳体的内表面热接触。
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公开(公告)号：US20210192712A1
公开(公告)日：2021-06-24
申请号：US16868739
申请日：2020-05-07
发明人： Carlos Maeso , Daniel Quesada , Ana Escobar , Youssef Tamaazousti , Josselin Kherroubi , Jean-Christophe Auchere
IPC分类号： G06T7/00 , G06T11/60 , G06T7/73 , G06K9/62 , E21B47/002 , E21B47/18 , E21B49/00 , G01V3/20 , G01V1/44 , G01V11/00
摘要： The disclosure relates to a method and system for downhole processing of data, such as images, including using a set of downhole sensors to measure parameters relative to the borehole at a plurality of depths and azimuths and detecting predetermined features of the borehole, using a downhole processor, with a trained machine-learning model and extracting characterization data, characterizing the shape and position of the predetermined features that are transmitted to the surface. It also provides a method and system for providing an image of a geological formation at the surface including transmitting a first dataset to the surface that will be used for reconstructing an image at the surface, downhole processing of a second dataset to detect predetermined features and extract characterization data that are transmitted at the surface and displaying a combined image comprising the predetermined features overlaid on the first image.
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公开(公告)号：US20200072999A1
公开(公告)日：2020-03-05
申请号：US16116981
申请日：2018-08-30
摘要： Methods for correcting eccentering effects on echoes detected from ultrasonic pulses emitted by a transducer of a downhole tool. Echo envelope amplitude, azimuth, and location for each echo is utilized to assess echo amplitude sensitivity to geometric and spatial characteristics of the downhole tool within the wellbore. Echo envelope amplitudes are corrected for eccentering effects based on the assessed sensitivity. A visual representation of the corrected echo envelope amplitudes is the generated. Also disclosed herein are tangible, non-transient, computer-readable media comprising instructions executable by a processor to carry out the methods, as well as systems including downhole tools and processing devices operable to carry out the methods.
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公开(公告)号：US10281607B2
公开(公告)日：2019-05-07
申请号：US15334286
申请日：2016-10-26
发明人： Hiroshi Hori , Yoshino Matsumoto , Kojiro Nishimiya , Kiyomitsu Hikida , Jean-Christophe Auchere
IPC分类号： G01V1/50
摘要： A downhole tool for real-time caliper measurements is provided. The downhole tool comprises multiple acoustic transducers mounted at different positions of the tool, and a control system. The control system drives the multiple transducers, receives pressure echo signals from the transducers, records the pressure echo signals in the memory, extracts data of two-way transit time and echo amplitude from the echo signals, and computes at least one of a borehole diameter, a tool center position, and an acoustic slowness or velocity of downhole fluid, based on the data of transit time and echo amplitude.
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公开(公告)号：US20170357021A1
公开(公告)日：2017-12-14
申请号：US15617127
申请日：2017-06-08
CPC分类号： G01V1/50 , G01V1/20 , G01V1/42 , G01V2210/121 , G01V2210/1234 , G01V2210/1299 , G01V2210/1429 , G01V2210/161 , G01V2210/6222
摘要： A technique facilitates monitoring of acoustic signals to measure a velocity vector of a borehole. Acoustic sensors are arranged in a desired acoustic sensor array and positioned along a body of a tool, e.g. a sonic logging tool. The acoustic sensor array is then positioned in fluid along a wall of a borehole formed in a subterranean formation. The acoustic sensors are used to collect acoustic signal data while the acoustic sensors are maintained in a non-contact position with respect to the wall of the borehole. The data may be processed to determine the desired velocity vector.
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公开(公告)号：US20170314385A1
公开(公告)日：2017-11-02
申请号：US15581538
申请日：2017-04-28
发明人： Hiroshi Hori , Takeshi Endo , Evgeniya Deger , Naoki Sakiyama , Hiroshi Nakajima , Jean-Christophe Auchere , Henri-Pierre Valero
IPC分类号： E21B47/022 , E21B47/024 , G01V11/00 , G01V1/46 , E21B7/04 , E21B47/12 , E21B47/08 , E21B49/00 , G01V1/50 , E21B47/00
CPC分类号： E21B47/02208 , E21B17/20 , E21B47/024 , E21B47/082 , E21B47/091 , E21B47/12 , G01V1/46 , G01V1/50 , G01V11/002 , G01V2200/16 , G01V2210/72
摘要： A technique facilitates use of acoustic measurements to enable geo-steering during a well operation. A steerable well string is provided with acoustic systems used to collect data which is then processed to determine geo-steering inputs. In some applications, the well string may comprise a coiled tubing drilling tool. The coiled tubing drilling tool or other well string tool is combined with an azimuthally distributed pitch-catch micro-sonic sensor system and an azimuthally distributed ultrasonic pulse-echo transducer system. Data from these two systems is provided to a processing system which processes the data to determine, for example, real-time, geo-steering inputs. These inputs may then be used to more effectively steer the coiled tubing drilling tool or other well string tool.
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