METHODS OF USING NONDESTRUCTIVE MATERIAL INSPECTION SYSTEMS

    公开(公告)号:US20190145933A1

    公开(公告)日:2019-05-16

    申请号:US16164976

    申请日:2018-10-19

    Abstract: Provided is a method of utilizing a nondestructive evaluation method to inspect/screen steel components (like plates), steel metal pipes, and seam welds and girth welds of the pipes to identify material phases and assess material qualities. The method includes: providing a DC magnetic field from a magnet to a steel plate, pipe, or weld composed of at least one hysteretic ferromagnetic material followed by scanning the plate, pipe, or weld and recording magnetic responses from two or more suitable sensors disposed at locations with different magnetic field strengths in the regions of interest configured to receive magnetic responses; and correlating all the said received magnetic responses to one or more material qualities and/or material phases of the plate, pipe, or weld. The one or more material qualities includes regions of higher hardness, regions of metal loss, regions of surface cracks, amount of undesirable phases, and combinations thereof.

    Magneto-seismic exploration method and system

    公开(公告)号:US10101495B2

    公开(公告)日:2018-10-16

    申请号:US15444803

    申请日:2017-02-28

    Abstract: Systems and methods are provided for a magneto-seismic exploration of a subsurface region. An electromagnetic source may transmit time-varying electromagnetic field into the subsurface region, in the presence of a static or time-varying magnetic field, such that a component of the electric field associated with the time-varying electromagnetic field is substantially parallel to an interface between two subsurface formations in the subsurface region, wherein the electric field interacts with the static or time-varying magnetic field and creates a Lorentz force in each of the subsurface formations. One or more seismic receivers may detect a seismic signal generated by a Lorentz force change at the interface between the two subsurface formations. A computer system may be programmed to process and present the detected seismic signal.

    METHOD OF EXTRACTING INTRINSIC ATTENTUATION FROM SEISMIC DATA

    公开(公告)号:US20190265376A1

    公开(公告)日:2019-08-29

    申请号:US16251255

    申请日:2019-01-18

    Abstract: The present disclosure generally relates to a computer-implemented method for determining intrinsic attenuation in a region of a subsurface. The method generally includes obtaining seismic data around the region of the subsurface; processing the seismic data to obtain a reflectivity spectrum in the region of the subsurface; fitting the reflectivity spectrum to analytic formulas as a function of frequency; and determining the intrinsic attenuation in the region of the subsurface based on the fitting. Other aspects of the present disclosure relate to a computer-implemented method for determining the thickness of a thin subsurface bed at a horizon of interest.

    METHODS OF USING NONDESTRUCTIVE MATERIAL INSPECTION SYSTEMS

    公开(公告)号:US20190145932A1

    公开(公告)日:2019-05-16

    申请号:US16165090

    申请日:2018-10-19

    Abstract: For method of utilizing a nondestructive evaluation method to inspect a steel material comprising at least one hysteretic ferromagnetic material and/or at least one nonhysteretic material to identify one or more material conditions and/or one or more inhomogeneities in steel material, the method can comprise the steps of: interrogating the hysteretic ferromagnetic material and/or the nonhysteretic material with an input time varying magnetic field; scanning the steel material and detecting a magnetic response and/or acoustic response over time from the hysteretic ferromagnetic material and/or the nonhysteretic material; determining a time dependent nonlinear characteristic of the received magnetic response and/or acoustic response; and correlating the time dependent nonlinear characteristic of the received magnetic response and/or acoustic response to the one or more material conditions and/or one or more inhomogeneities in steel material.

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