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    USING AN ACOUSTIC TOOL TO IDENTIFY EXTERNAL DEVICES MOUNTED TO A TUBULAR
    32.
    发明公开
    USING AN ACOUSTIC TOOL TO IDENTIFY EXTERNAL DEVICES MOUNTED TO A TUBULAR 审中-公开

    公开(公告)号：US20230358911A1

    公开(公告)日：2023-11-09

    申请号：US18133553

    申请日：2023-04-12

    Applicant: DarkVision Technologies Inc

    Inventor： Timothy Luu ,  Anas Mahmoud

    IPC: G01V1/50

    CPC classification number: G01V1/50

    Abstract: A method, imaging tool and computer system for locating external devices mounted to a tubular in a wellbore. The identification of devices, such as cable clamps, enables other tools in the string to operate more precisely. A computer model is used to locate the devices from acoustic images, which images are acquired using a downhole imaging tool having an acoustic sensor or acoustic array. The model may be a classifier, which may be machine trained to classify whether a device is present, its location and its orientation. Automating this locating enables very long wellbores to be processed quickly.

    Overlapped scheduling and sorting for acoustic transducer pulses
    35.
    发明授权
    Overlapped scheduling and sorting for acoustic transducer pulses 有权

    公开(公告)号：US11573341B2

    公开(公告)日：2023-02-07

    申请号：US16653374

    申请日：2019-10-15

    Applicant: DARKVISION TECHNOLOGIES INC

    Inventor： Graham Manders ,  Michael Halpenny-Mason

    IPC: G01V1/24 ,  G01S7/527 ,  G01S15/89 ,  G01V1/16 ,  G01V1/20 ,  G01V1/46

    Abstract: A device and method used to increase the resolution when imaging, measuring and inspecting wells, pipes and objects located therein. The device comprises an array of acoustic transducers that both transmit and receive acoustic signals. Scan lines may be overlapped by interlacing transmission and receiving windows thus increasing either the resolution or logging speed drastically compared to conventional approaches. The sequence of the scan lines making up an imaging frame is created by stratifying physically close lines and randomly selecting from within each stratum, preventing interference from neighboring transducers, signals and acoustic artifacts that fundamentally limit logging speed and resolution using conventional methods.

    MACHINE LEARNING MODEL FOR MEASURING PERFORATIONS IN A TUBULAR
    36.
    发明申请
    MACHINE LEARNING MODEL FOR MEASURING PERFORATIONS IN A TUBULAR 有权

    公开(公告)号：US20220415040A1

    公开(公告)日：2022-12-29

    申请号：US17830334

    申请日：2022-06-02

    Applicant: DarkVision Technologies Inc.

    Inventor： Siavash KHALLAGHI

    IPC: G06V20/10 ,  G06T7/62 ,  G06T7/136 ,  G06T7/143

    Abstract: A method and instruction memory for processing acoustic images of a downhole casing to determine perforations of the tubular. The images may be acquired by an acoustic logging tool deployed into cased well. A Machine Learning model is trained to recognize regions of the acoustic images that are perforations or not, in order to calculate geometric properties of the perforation and overall casing. Renderings of the imaged casing may be overlaid with contours and properties of perforations to improve perforation, fracturing and producing operations.

    DEVICE AND METHOD TO IMAGE FLOW IN OIL AND GAS WELLS USING PHASED ARRAY DOPPLER ULTRASOUND
    39.
    发明申请
    DEVICE AND METHOD TO IMAGE FLOW IN OIL AND GAS WELLS USING PHASED ARRAY DOPPLER ULTRASOUND 有权

    公开(公告)号：US20210355817A1

    公开(公告)日：2021-11-18

    申请号：US17389918

    申请日：2021-07-30

    Applicant: DarkVision Technologies Inc

    Inventor： Osman S. MALIK ,  Graham T. MANDERS ,  Stephen E. ROBINSON

    IPC: E21B47/107 ,  G01S15/89 ,  G01S15/88 ,  G01F1/66 ,  G01F1/74 ,  E21B47/002

    Abstract: A device and method for imaging, measuring and identifying multiphase fluid flow in wellbores using phased array Doppler ultrasound. The device includes a radially-configured or ring-shaped ultrasound transducer that when deployed in a well in Doppler mode can measure the velocity of radially flowing fluids in the wellbore and generate a 3D image of radial flow in the wellbore, including flowback into the wellbore after fracturing operations, or flow leaving the wellbore during water injection operations. The ring-shaped ultrasound transducer can also simultaneously operate in a B-mode to generate a B-mode image of the wellbore liner upon which the Doppler image can be overlaid. The device may also include a forward facing ultrasound transducer either instead of or in place of the ring-shaped transducer for obtaining information and images on axial flow in the wellbore in Doppler mode, and the location of phase boundaries and phase locations in B-mode.

    Device and method to image flow in oil and gas wells using phased array doppler ultrasound
    40.
    发明授权
    Device and method to image flow in oil and gas wells using phased array doppler ultrasound 有权

    公开(公告)号：US11092002B2

    公开(公告)日：2021-08-17

    申请号：US15558946

    申请日：2016-03-15

    Applicant: DarkVision Technologies Inc.

    Inventor： Osman S. Malik ,  Graham T. Manders ,  Stephen E. Robinson

    IPC: E21B47/10 ,  E21B47/107 ,  G01S15/89 ,  G01S15/88 ,  G01F1/66 ,  G01F1/74 ,  E21B47/002 ,  E21B43/11 ,  E21B43/26

    Abstract: A device and method for imaging, measuring and identifying multiphase fluid flow in wellbores using phased array Doppler ultrasound. The device includes a radially-configured or ring-shaped ultrasound transducer that when deployed in a well in Doppler mode can measure the velocity of radially flowing fluids in the wellbore and generate a 3D image of radial flow in the wellbore, including flowback into the wellbore after fracturing operations, or flow leaving the wellbore during water injection operations. The ring-shaped ultrasound transducer can also simultaneously operate in a B-mode to generate a B-mode image of the wellbore liner upon which the Doppler image can be overlaid. The device may also include a forward facing ultrasound transducer either instead of or in place of the ring-shaped transducer for obtaining information and images on axial flow in the wellbore in Doppler mode, and the location of phase boundaries and phase locations in B-mode.

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