Patents by Inventor Christopher H. Chapman

Christopher H. Chapman 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).

  • Waveform inversion using a response of forward modeling
    Patent number: 9158018
    Abstract: Forward modeling is performed to compute a response of a target structure, the forward modeling accounting for distortion of a reflected signal from a reflector in the target structure. Waveform inversion is performed using the response of the forward modeling.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: October 13, 2015
    Assignee: WesternGeco L.L.C.
    Inventors: Rodrigo Fuck, Christopher H. Chapman, James Rickett, Colin Thomson
  • Correcting an acoustic simulation for elastic effects
    Patent number: 8437219
    Abstract: A technique includes simulating seismic wave propagation based on an acoustic model and based on a result of the simulation, estimating an error between the result and another result obtained if the seismic wave propagation were simulated based on an elastic model. The technique includes based at least in part on the estimated error predicting the other result without performing the simulation based on the elastic model.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: May 7, 2013
    Assignee: WesternGeco L.L.C.
    Inventors: Christopher H. Chapman, Johan O. A. Robertsson
  • WAVEFORM INVERSION USING A RESPONSE OF FORWARD MODELING
    Publication number: 20120259601
    Abstract: Forward modeling is performed to compute a response of a target structure, the forward modeling accounting for distortion of a reflected signal from a reflector in the target structure. Waveform inversion is performed using the response of the forward modeling.
    Type: Application
    Filed: December 21, 2011
    Publication date: October 11, 2012
    Inventors: RODRIGO FUCK, Christopher H. Chapman, James Rickett, Colin Thomson
  • CORRECTING AN ACOUSTIC SIMULATION FOR ELASTIC EFFECTS
    Publication number: 20110075517
    Abstract: A technique includes simulating seismic wave propagation based on an acoustic model and based on a result of the simulation, estimating an error between the result and another result obtained if the seismic wave propagation were simulated based on an elastic model. The technique includes based at least in part on the estimated error predicting the other result without performing the simulation based on the elastic model.
    Type: Application
    Filed: January 26, 2010
    Publication date: March 31, 2011
    Inventors: Christopher H. Chapman, Johan O. A. Robertsson
  • Method of determining the response caused by model alterations in seismic simulations
    Patent number: 6125330
    Abstract: Described is a finite-difference methodology for efficiently computing the seismic response from a seismic model subject to several changes within sub-volumes. Initially, the response from an original model is calculated and the wave field is recorded at receivers and along closed surfaces around the sub-volumes. As changes occur, the recorded seismograms can be updated by simulating the response on small models encompassing the immediate neighborhood of the regions of change, the recording locations, and the parts of model that contribute to subsequent reflections and scattering recorded at the receivers. The recorded wave field can then be added to the reference wave field to obtain the seismic responses of alterations to the model without having to recalculate the full altered model.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: September 26, 2000
    Assignee: Schlumberger Technology Corporation
    Inventors: John Olof Anders Robertson, Christopher H. Chapman