Patents by Inventor Mark H. Tobey

Mark H. Tobey 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: 5866814
    Abstract: Data from the pyrolytic analysis of rock samples obtained from drilling operations in an existing oil field are used to characterize the quality and condition of reservoir rock by comparison of the values of an index for the unknown reservoir rock samples with the value of the index for a known type and quality of petroleum reservoir rock sample, the index being denominated Pyrolytic Oil Productivity Index ("POPI") and defined by the expression:ln(LV+TD+TC).times.(TD.div.TC)=POPI (I),where the terms of the equation are determined empirically and the resulting POPI values can be used to direct horizontal drilling operations in real time to optimize the position of the drilling bit in the reservoir.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: February 2, 1999
    Assignee: Saudi Arabian Oil Company
    Inventors: Peter J. Jones, Mark H. Tobey