Patents by Inventor Charles F. Guthrie

Charles F. Guthrie 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).

  • Patent number: 7797139
    Abstract: A method of scheduling cyclic steaming of petroleum-containing wells including: inputting to a production-predictor data describing the past cyclic steaming and resulting production of wells; processing the data in the production-predictor and outputting production predictions for the wells during a future steaming cycle; inputting the production predictions into an optimizer; inputting an initial steaming Optimal Cycle Length schedule for the wells into the optimizer; processing the production predictions and the initial steaming cycle schedule in the optimizer by: determining a ranking for the initial steaming cycle schedule for the production predictions against a pre-determined ranking criteria; producing new steaming cycle schedules based on the ranking of the initial steaming cycle a schedule optimization algorithm; determining a ranking for the new steaming schedules against the ranking criteria; repeating the production of schedules and determining ranking steps until some pre-determined termination c
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: September 14, 2010
    Assignee: Chevron U.S.A. Inc.
    Inventors: Charles F. Guthrie, Anil Patel
  • Patent number: 7565305
    Abstract: A method involves identifying work elements of a work process which may be enhanced to provide a biggest impact on enhancing an overall value of the work process. The method involves identifying a plurality of work elements comprising a work process, interviewing one or more knowledgeable interviewees and determining existing states and enhanced proposed states of the plurality of work elements, visually displaying the existing and enhanced proposed states of the work elements, and estimating and visually displaying a change in value of the work process due to an enhancement of the work elements from the existing states to the enhanced proposed states.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: July 21, 2009
    Assignee: Schlumberger Technology Corp.
    Inventors: David N. Shipley, Paul S. Lundy, David W. Tuk, Charles F. Guthrie, Rick A. Dotterer, Michael Carney
  • Publication number: 20030110017
    Abstract: The invention includes a method of scheduling cyclic steaming of a group of petroleum-containing wells including: inputting to a production-predicting means a group of data describing at least in part the past cyclic steaming and resulting production of a group of petroleum-containing wells; processing the data in the production-predicting means and outputting a group of production predictions for the group of wells during a future steaming cycle; inputting the group of production predictions into an optimization means; inputting an initial steaming Optimal Cycle Length schedule for the group of wells into the optimization means; processing the group of production predictions and the initial steaming cycle schedule in the optimization means by the steps including: determining a ranking for the initial steaming cycle schedule for the group of production predictions against a pre-determined ranking criteria; producing a group of new steaming cycle schedules based on the ranking of the initial steaming cycle a s
    Type: Application
    Filed: December 7, 2001
    Publication date: June 12, 2003
    Inventors: Charles F. Guthrie, Anil Patel
  • Patent number: 6446721
    Abstract: The invention includes a method of scheduling cyclic steaming of a group of petroleum-containing wells including: inputting to a production-predicting means a group of data describing at least in part the past cyclic steaming and resulting production of a group of petroleum-containing wells; processing the data in the production-predicting means and outputting a group of production predictions for the group of wells during a future steaming cycle; inputting the group of production predictions into an optimization means; inputting an initial steaming cycle schedule for the group of wells into the optimization means; processing the group of production predictions and the initial steaming cycle schedule in the optimization means by the steps including: determining a ranking for the initial steaming cycle schedule for the group of production predictions against a pre-determined ranking criteria; producing a group of new steaming cycle schedules based on the ranking of the initial steaming cycle a schedule optimiz
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: September 10, 2002
    Assignee: Chevron U.S.A. Inc.
    Inventors: Anilkumar Patel, Charles F. Guthrie, Loren J. Lederhos, James R. Ouimette
  • Publication number: 20020007947
    Abstract: The invention includes a method of scheduling cyclic steaming of a group of petroleum-containing wells including: inputting to a production-predicting means a group of data describing at least in part the past cyclic steaming and resulting production of a group of petroleum-containing wells; processing the data in the production-predicting means and outputting a group of production predictions for the group of wells during a future steaming cycle; inputting the group of production predictions into an optimization means; inputting an initial steaming cycle schedule for the group of wells into the optimization means; processing the group of production predictions and the initial steaming cycle schedule in the optimization means by the steps including: determining a ranking for the initial steaming cycle schedule for the group of production predictions against a pre-determined ranking criteria; producing a group of new steaming cycle schedules based on the ranking of the initial steaming cycle a schedule optimiz
    Type: Application
    Filed: March 23, 2001
    Publication date: January 24, 2002
    Inventors: Anilkumar Patel, Charles F. Guthrie, Loren J. Lederhos, James R. Ouimette
  • Patent number: 5260240
    Abstract: A process is disclosed for passivating the reactivity of contaminant metals, such as nickel and vanadium, which have been deposited on a catalytic cracking catalyst, by adding to the cracking catalyst a mixture of a calcium-containing material and a magnesium-containing material in a separate reactor in the presence of steam. The preferred calcium-containing material is dolomite and the preferred magnesium-containing material is sepiolite. It is also preferred to include antimony and/or bismuth compounds in the additive mixture.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: November 9, 1993
    Assignee: Chevron Research and Technology Company
    Inventors: Charles F. Guthrie, Lawrence W. Jossens, James V. Kennedy, John A. Paraskos