Patents by Inventor Robert Whalley

Robert Whalley 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).

  • Method and system of determining well performance
    Patent number: 6836731
    Abstract: A well optimization index WOI is an indicator for tracking trends and monitoring overall well performance. The WOI is a weighted average of two numbers reflecting operation execution performance (i.e., the Well Operation Time Ratio (WCTR)) and production result performance (i.e., the Productivity Index Ratio (PIR)). The WOI is calculated by a spreadsheet program used in a data-processing system. The spreadsheet program automatically generates the WOI for the well according to the expression: WOI = PI R ⁢ N + WCT R N + 1 ; wherein N is a weighting constant which represents a recovery of cost, that is estimated based on historical data.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: December 28, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Robert Whalley, Lino Lopes Cancado, Luis Sandoval, Jesus Prato