Black hole boundary conditions
    1.
    发明授权

    公开(公告)号:US10126450B2

    公开(公告)日:2018-11-13

    申请号:US15045359

    申请日:2016-02-17

    Abstract: A method for modeling and analyzing the impact of different seismic surveying and imaging techniques on a subterranean formation uses a black hole boundary condition around a particular region in the formation where at least one of the physical characteristics is unclear and may distort the seismic modeling results. The black hole boundary conditions will eliminate any energy wave that enters, exit or reflect off the region so as to avoid any image distortion caused by this region. The resulted image data is compared with the image data obtained without using the black hole boundary conditions to determine the impact of this region, and proper correction can be made to more precisely and accurately model the formation.

    Methods for simultaneous source separation

    公开(公告)号:US11294088B2

    公开(公告)日:2022-04-05

    申请号:US16833975

    申请日:2020-03-30

    Abstract: A multi-stage inversion method for deblending seismic data includes: a) acquiring blended seismic data from a plurality of seismic sources; b) constructing an optimization model that includes the acquired blended seismic data and unblended seismic data; c) performing sparse inversion, via a computer processor, on the optimization model; d) estimating high-amplitude coherent energy from result of the performing sparse inversion in c); e) re-blending the estimated high-amplitude coherent energy; and f) computing blended data with an attenuated direct arrival energy.

    Methods for simultaneous source separation

    公开(公告)号:US10605941B2

    公开(公告)日:2020-03-31

    申请号:US14974060

    申请日:2015-12-18

    Abstract: A multi-stage inversion method for deblending seismic data includes: a) acquiring blended seismic data from a plurality of seismic sources; b) constructing an optimization model that includes the acquired blended seismic data and unblended seismic data; c) performing sparse inversion, via a computer processor, on the optimization model; d) estimating high-amplitude coherent energy from result of the performing sparse inversion in c); e) re-blending the estimated high-amplitude coherent energy; and f) computing blended data with an attenuated direct arrival energy.

    Downhole inertial mass system
    4.
    发明授权

    公开(公告)号:US09817145B2

    公开(公告)日:2017-11-14

    申请号:US15139823

    申请日:2016-04-27

    CPC classification number: G01V1/52 B06B1/183 G01V1/155

    Abstract: The invention relates to a downhole inertial mass seismic-source system, apparatus and method for use within a wellbore environment to provide seismic signal energy at a wellbore location. The system comprises a first inertial mass apparatus with a fluid plunger that is in contact with a first wellbore fluid chamber and a second wellbore fluid chamber, a second inertial mass apparatus with a fluid plunger in contact with the first well bore fluid chamber, a third inertial mass apparatus with a fluid plunger in contact with the second well bore fluid chamber, an Inertial Mass Control System (IMCS) connected to the first inertial mass apparatus, and a power source providing power to the Inertial Mass Control System.

Patent Agency Ranking