Patents by Inventor Kenneth E. Dahlberg

Kenneth E. Dahlberg 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).

  • Volumetric laminated sand analysis
    Patent number: 7526413
    Abstract: A method of analyzing well log data from thinly bedded reservoirs to obtain estimates of hydrocarbon pore volume. In the method, a model of the reservoir is established for an interval that is to be analyzed. Within the analysis interval, a set of bed types is identified consisting of sandstone beds and shale beds. For each bed type, parameter values are assigned and calculations are made of the theoretical log response of each bed type. The estimated log responses are compared to measured log responses to determine consistency. Based upon the model, an uncertainty analysis is made using a Monte Carlo technique for inversion of the model. The result is an estimate of the hydrocarbon pore volume of the thinly bedded reservoir interval with distribution statistics representing the expected value and the uncertainty in the estimate.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: April 28, 2009
    Assignee: ExxonMobil Upstream Research Company
    Inventor: Kenneth E. Dahlberg
  • Volumetric laminated sand analysis
    Publication number: 20020133323
    Abstract: A method of analyzing well log data from thinly bedded reservoirs to obtain estimates of hydrocarbon pore volume. In the method, a model of the reservoir is established for an interval that is to be analyzed. Within the analysis interval, a set of bed types is identified consisting of sandstone beds and shale beds. For each bed type, parameter values are assigned and calculations are made of the theoretical log response of each bed type. The estimated log responses are compared to measured log responses to determine consistency. Based upon the model, an uncertainty analysis is made using a Monte Carlo technique for inversion of the model. The result is an estimate of the hydrocarbon pore volume of the thinly bedded reservoir interval with distribution statistics representing the expected value and the uncertainty in the estimate.
    Type: Application
    Filed: January 9, 2002
    Publication date: September 19, 2002
    Inventor: Kenneth E. Dahlberg
  • Seismic attribute analysis using inflection point intervals
    Patent number: 5808966
    Abstract: A method of geophysical prospecting using seismic trace attribute analysis for formation characterization. More particularly, a method for selection of seismic traces which most accurately represent the subsurface formation in the area of a seismic survey is disclosed. In one embodiment, inflection-point interval analysis is used to account for effects of local surfaces.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: September 15, 1998
    Assignee: Exxon Production Research Company
    Inventors: Craig S. Calvert, Vijay Khare, Kenneth E. Dahlberg
  • Method for determining formation properties from seismic attributes
    Patent number: 5691958
    Abstract: A method of geophysical prospecting using seismic trace attribute analysis for formation characterization. More particularly, a method for selection of seismic traces which most accurately represent the subsurface formation in the area of a seismic survey is disclosed. In one embodiment, inflection-point interval analysis is used to account for effects of local surfaces.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: November 25, 1997
    Assignee: Exxon Production Research Company
    Inventors: Craig S. Calvert, Vijay Khare, Kenneth E. Dahlberg, Leslie A. Wahrmund