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    SYSTEMS AND METHODS FOR ISOLATION DETECTION USING A SYMMETRY INVARIANT LOG
    1.
    发明公开
    SYSTEMS AND METHODS FOR ISOLATION DETECTION USING A SYMMETRY INVARIANT LOG 审中-公开

    公开(公告)号：US20230417942A1

    公开(公告)日：2023-12-28

    申请号：US18215229

    申请日：2023-06-28

    Applicant: PIPELINES 2 DATA (P2D) LIMITED ,  ConocoPhillips Company

    Inventor： Geoff Steel ,  Mark Walsh ,  Stephen John Mayo

    IPC: G01V1/50 ,  G01V1/52

    CPC classification number: G01V1/50 ,  G01V1/52 ,  G01V2001/526 ,  G01V2210/6226 ,  G01V2210/43

    Abstract: Aspects of the present disclosure relate generally to analyzing subterranean cylindrical structures using acoustic sensing. On example includes: sending first acoustic waves in the wellbore via a radial acoustic sensor; receiving first reflection waves associated with the first acoustic waves via the radial acoustic sensor; sending second acoustic waves in the wellbore via the radial acoustic sensor; receiving second reflection waves associated with the second acoustic waves via the radial acoustic sensor; processing recorded data associated with the first acoustic waves, the first reflection waves, the second acoustic waves, and the second reflection waves, wherein the first acoustic waves are associated with a first radial direction, and wherein the second acoustic waves are associated with a second radial direction, the second radial direction being opposite the first radial direction; and generating a plot for identification of one or more isolation regions in the wellbore based on the processing.

    RHODONEA CELL ACOUSTIC HYPERLENS FOR THRU-CASING ULTRASONIC SENSORS
    4.
    发明申请
    RHODONEA CELL ACOUSTIC HYPERLENS FOR THRU-CASING ULTRASONIC SENSORS 有权

    公开(公告)号：US20180024265A1

    公开(公告)日：2018-01-25

    申请号：US15215159

    申请日：2016-07-20

    Applicant: BAKER HUGHES INCORPORATED

    Inventor： DWIGHT W. SWETT

    IPC: G01V1/50 ,  E21B47/00 ,  E21B49/00 ,  G10K11/30

    CPC classification number: G01V1/50 ,  E21B47/0005 ,  E21B49/00 ,  G01V1/52 ,  G01V2001/526 ,  G10K11/30

    Abstract: Apparatus, systems, and methods for investigating a subsurface volume of interest from a borehole. Apparatus comprise an enclosure configured for conveyance along the borehole; an acoustic source in the enclosure configured to generate acoustic signals; a lens assembly disposed in the enclosure and next to the acoustic source, the lens assembly being formed of a plurality of cells, each cell formed as a column oriented transverse to a direction of travel of the acoustical signals. Each cell comprises a plurality of cell segments with each cell segment of the plurality comprising at least one arcuate wall and at least one radial finger, and wherein the cell segments are oriented in alignment with a rhodonea conformal mapping geometry in a plane transverse to the column to cause acoustic waves to travel at a different speed in each of three orthogonal directions.

    MEASURING FREQUENCY-DEPENDENT ACOUSTIC ATTENUATION
    8.
    发明申请
    MEASURING FREQUENCY-DEPENDENT ACOUSTIC ATTENUATION 审中-公开

    公开(公告)号：US20170183961A1

    公开(公告)日：2017-06-29

    申请号：US15314617

    申请日：2016-04-28

    Applicant: Halliburton Energy Services, Inc.

    Inventor： Batakrishna Mandal ,  Srinivasan Jagannathan

    IPC: E21B47/18 ,  E21B49/08

    CPC classification number: E21B47/182 ,  E21B47/0005 ,  E21B49/08 ,  G01V1/46 ,  G01V1/50 ,  G01V2001/526

    Abstract: Methods and systems for frequency-dependent fluid attenuation measurement are provided. In certain embodiments, the methods comprise: generating one or more reference acoustic signals within a reference fluid; receiving one or more reference acoustic signal reflections; determining a frequency-dependent response function based, at least in part, on the one or more reference acoustic signal reflections; generating one or more sample acoustic signals within a sample fluid; receiving one or more sample acoustic signal reflections; and determining a frequency-dependent attenuation function of the sample fluid based, at least in part, on the one or more sample acoustic signal reflections and the frequency-dependent response function.

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