Patents by Inventor Perry W. Scherer

Perry W. Scherer 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).

  • Automated material balance system for hydrocarbon reservoirs using a genetic procedure
    Patent number: 6128579
    Abstract: A system for producing a material balance solution for well patterns in a hydrocarbon reservoir is described that automatically optimizes the fluid allocation factors for each well used in determining the solution. The system automatically optimizes estimates for the allocation factors to be used in the material balance solution by randomly generating a first generation of allocation factor strings, each string in the generation assigning allocation factors to each of the wells in the reservoir. A fitness function value is determined for each of the strings by evaluating a fitness function, wherein the fitness function comprises the sum of the differences between computed and measured field pressures for each pattern, and the sum of the differences between target allocation factors and the allocation factors specified within the string for each well. A succeeding generation of allocation factor strings is produced according to a genetic algorithm.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: October 3, 2000
    Assignee: Atlantic Richfield Corporation
    Inventors: Michael D. McCormack, Donald J. MacAllister, Richard F. Stoisits, Perry W. Scherer, Tuan D. Ma
  • Automated material balance system for hydrocarbon reservoirs using a genetic procedure
    Patent number: 5924048
    Abstract: A system for producing a material balance solution for well patterns in a hydrocarbon reservoir is described that automatically optimizes the fluid allocation factors for each well used in determining the solution. The system automatically optimizes estimates for the allocation factors to be used in the material balance solution by randomly generating a first generation of allocation factor strings, each string in the generation assigning allocation factors to each of the wells in the reservoir. A fitness function value is determined for each of the strings by evaluating a fitness function, wherein the fitness function comprises the sum of the differences between computed and measured field pressures for each pattern, and the sum of the differences between target allocation factors and the allocation factors specified within the string for each well. A succeeding generation of allocation factor strings is produced according to a genetic algorithm.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: July 13, 1999
    Inventors: Michael D. McCormack, Donald J. MacAllister, Richard F. Stoisits, Perry W. Scherer, Tuan D. Ma