Overlapped scheduling and sorting for acoustic transducer pulses

    公开(公告)号:US11573341B2

    公开(公告)日:2023-02-07

    申请号:US16653374

    申请日:2019-10-15

    摘要: 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.

    ACOUSTIC SURFACE IMAGING USING TIME OF FLIGHT

    公开(公告)号:US20200249203A1

    公开(公告)日:2020-08-06

    申请号:US16783060

    申请日:2020-02-05

    摘要: A system, device and method for imaging, measuring and identifying surface features in a tubular, such as a casing, wellbore, or pipe. The device comprises an ultrasound transducer for sonifying an area of the surface of the tubular, with a pulse intercepting axial locations of the sonified area at different times. Reflected signals are processed using their time of flight to interpret the reflected signals as axial locations of features on the surface of the tubular. Multiple sonified areas are partially overlapped in the axial direction to capture features redundantly. Reflections from the multiple areas are combined to remove noise and strengthen reflections from real features. A geometric model of the surface of the tubular is rendered and displayed. Capturing larger areas per frame increases the logging rate and oversampling improves the resolution and signal to noise ratio.

    ADVANCED OPTICAL IMAGING OF TUBULARS
    9.
    发明公开

    公开(公告)号:US20230358131A1

    公开(公告)日:2023-11-09

    申请号:US18119836

    申请日:2023-03-10

    IPC分类号: E21B47/002 H04N23/50

    CPC分类号: E21B47/0025 H04N23/555

    摘要: A device and method used to inspect wellbores, cased or uncased using cameras. Improvements in downhole optical imaging are provided using telecentric lens, prisms and mirrors, or structured lighting. Stereoscopic arrangements and ultrasound sensor may provide 3D or contour information. The images are stored on the tool and analyzed later. The present tool overcomes the deficiencies currently experience by downhole camera operators, such as poor scale and perspective.

    Device and Method to Position an End Effector in a Well

    公开(公告)号:US20200055196A1

    公开(公告)日:2020-02-20

    申请号:US16539866

    申请日:2019-08-13

    摘要: A device and method for manipulating a robotic end effector in a well. Actuators manipulate the end effector independently through multiple degrees of freedom to improve the perspective of the end effector. An imaging sensor may be used to image, measure and identify features of a well and objects located therein. The sensor may be an ultrasound transducer, camera or x-ray sensor arranged radially, axial or distributed over a 2D surface. The end effector may be connected to a tool, such as a fishing tool, a welder, a milling tool, or a repair tool.