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    Advanced downhole waveform interpretation
    3.
    发明授权
    Advanced downhole waveform interpretation 有权

    公开(公告)号：US10102315B2

    公开(公告)日：2018-10-16

    申请号：US14962368

    申请日：2015-12-08

    申请人： University of Washington ,  BP Corporation North America Inc.

    发明人： Ivan Pelivanov ,  Matthew O'Donnell ,  Abraham Vereide

    IPC分类号： G06F17/50

    摘要： Systems and methods process a measured ultrasonic response waveform to determine a well casing thickness and an acoustic impedance of a sealing medium surrounding the well casing. An array of simulated response waveforms corresponding to a set of candidate acoustic impedances for the sealing medium surrounding the well casing and a set of candidate well casing thicknesses is generated. A simulated response waveform from the array of simulated response waveforms is identified that best matches the measured response waveform so as to determine the sealing medium acoustic impedance.

    Advanced Downhole Waveform Interpretation
    4.
    发明申请
    Advanced Downhole Waveform Interpretation 审中-公开
    高级井下波形解释

    公开(公告)号：US20160162614A1

    公开(公告)日：2016-06-09

    申请号：US14962368

    申请日：2015-12-08

    申请人： BP Corporation North America Inc. ,  University of Washington

    发明人： Ivan Pelivanov ,  Matthew O'Donnell ,  Abraham Vereide

    IPC分类号： G06F17/50 ,  G06F17/10

    CPC分类号： G06F17/5009 ,  E21B47/0005 ,  E21B47/082 ,  G01V1/282 ,  G01V1/50

    摘要： Systems and methods process a measured ultrasonic response waveform to determine a well casing thickness and an acoustic impedance of a sealing medium surrounding the well casing. An array of simulated response waveforms corresponding to a set of candidate acoustic impedances for the sealing medium surrounding the well casing and a set of candidate well casing thicknesses is generated. A simulated response waveform from the array of simulated response waveforms is identified that best matches the measured response waveform so as to determine the sealing medium acoustic impedance.

    摘要翻译： 系统和方法处理测量的超声波响应波形，以确定围绕井套管的密封介质的井套管厚度和声阻抗。 产生一组模拟响应波形，其对应于围绕井套管的密封介质的一组候选声阻抗和一组候选井套管厚度。 识别来自仿真响应波形阵列的模拟响应波形，其与测量的响应波形最佳匹配，以便确定密封介质声阻抗。

    NON-CONTACT PHOTOACOUSTIC SPECTROPHOTOMETRY INSENSITIVE TO LIGHT SCATTERING
    7.
    发明申请
    NON-CONTACT PHOTOACOUSTIC SPECTROPHOTOMETRY INSENSITIVE TO LIGHT SCATTERING 审中-公开

    公开(公告)号：US20190302007A1

    公开(公告)日：2019-10-03

    申请号：US16368668

    申请日：2019-03-28

    申请人： University of Washington

    发明人： Ivan Pelivanov ,  Matthew O'Donnell ,  Elena Petrova ,  Soon Joon Yoon

    IPC分类号： G01N21/17 ,  G01N21/25

    摘要： A non-contact photoacoustic spectrophotometry system is configured to measure an absorption spectrum of a material. The system includes a modulated light source such as tunable pulsed laser that generates laser pulses to produce photoacoustic signals in the material. A non-contact detector monitors the surface of the container for the material. The detector includes a second light source, such as a continuous wave laser, focused on the surface of the container, and transmits reflected light to an interferometer, for example, a Sagnac interferometer. The interferometer produces an interference signal from the received light that is proportional to the acoustic pressure, which is transmitted to a computer to calculate an absorption coefficient. Using a plurality of wavelengths from the tunable pulsed laser, an absorption spectrum may be generated.

    Real-time photoacoustic and ultrasound imaging system and method
    9.
    发明授权
    Real-time photoacoustic and ultrasound imaging system and method 有权

    公开(公告)号：US10888304B2

    公开(公告)日：2021-01-12

    申请号：US15308828

    申请日：2015-05-11

    申请人： University of Washington

    发明人： Matthew O'Donnell ,  Thu-Mai Nguyen ,  Chen-Wei Wei ,  Jinjun Xia ,  Ivan Pelivanov ,  Soon Joon Yoon

    IPC分类号： A61B8/08 ,  A61B5/00 ,  A61B8/00 ,  A61B8/14

    摘要： Methods and system for producing combined photoacoustic/ultrasonic image frames use a low-power narrow beam laser to direct sequential pulses along a path overlying an internal region of interest. Photoacoustic responses are received and used to generate sub-frames. Between each of the laser pulses a plurality of ultrasound pulse-echo beams are sequentially emitted towards the region of interest, and the reflections are received and used to generate ultrasound sub-frames. The photoacoustic sub-frames are combined to produce a photoacoustic frame, and the ultrasound sub-frames are combined to produce an ultrasound frame. The photoacoustic and ultrasound frames are combined to produce an image frame. The method and system are suitable for producing real-time, high-contrast video.