Patents by Inventor Karin Schalkwijk

Karin Schalkwijk has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Processing seismic data
    Patent number: 9341726
    Abstract: A method of processing seismic data acquired consequent to actuation of a seismic source is described. The method comprises taking the result of the following process into account when processing the seismic data where the process comprises estimating the effect of uncertainty in the position and/or orientation of the seismic source relative to the measuring receiver on processing the seismic data by estimating a source wavefield from data acquired by a near-field measuring receiver and from a first parameter set including at least one parameter indicative of the position and/or orientation of the seismic source relative to the measuring receiver, varying the value of at least one parameter of the first parameter set, estimating the source wavefield from the data acquired by the measuring receiver and from the varied first parameter set and obtaining information about the uncertainty in the estimate of the source wavefield.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: May 17, 2016
    Assignee: WESTERNGECO L.L.C.
    Inventors: Clement Kostov, Jon-Fredrik Hopperstad, Philip Kitchenside, Johan Olof Anders Robertsson, Karin Schalkwijk
  • PROCESSING SEISMIC DATA
    Publication number: 20120095689
    Abstract: A method of processing seismic data acquired consequent to actuation of a seismic source is described. The method comprises taking the result of the following process into account when processing the seismic data where the process comprises estimating the effect of uncertainty in the position and/or orientation of the seismic source relative to the measuring receiver on processing the seismic data by estimating a source wavefield from data acquired by a near-field measuring receiver and from a first parameter set including at least one parameter indicative of the position and/or orientation of the seismic source relative to the measuring receiver, varying the value of at least one parameter of the first parameter set, estimating the source wavefield from the data acquired by the measuring receiver and from the varied first parameter set and obtaining information about the uncertainty in the estimate of the source wavefield.
    Type: Application
    Filed: February 24, 2010
    Publication date: April 19, 2012
    Applicant: WESTERNGECO LLC
    Inventors: Clement Kostov, Jon-Fredrik Hopperstad, Philip Kitchenside, Johan Olof Anders Robertsson, Karin Schalkwijk