Patents by Inventor Michael John Tompkins

Michael John Tompkins 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 of determining electrical anisotropy in a subsurface formation
    Patent number: 8482287
    Abstract: Method of determining electrical anisotropy in a subsurface formation, wherein electromagnetic field data from a multi-offset electromagnetic survey obtained by using an electromagnetic source and a plurality of electromagnetic receivers at varying offset distances from the source is provided. The electromagnetic field data comprises a first set of multi-offset response signals received at each receiver with the electromagnetic source emitting at a first frequency, and at least one additional set of multi-offset response signals received at each receiver with the electromagnetic source emitting at a different frequency. The presence of electrical anisotropy in the subsurface formation is determined using the first and at least one additional sets of multi-offset response signals.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: July 9, 2013
    Assignee: Shell Oil Company
    Inventor: Michael John Tompkins
  • METHOD OF DETERMINING ELECTRICAL ANISOTROPY IN A SUBSURFACE FORMATION
    Publication number: 20110050231
    Abstract: Method of determining electrical anisotropy in a subsurface formation, wherein electromagnetic field data from a multi-offset electromagnetic survey obtained by using an electromagnetic source and a plurality of electromagnetic receivers at varying offset distances from the source is provided. The electromagnetic field data comprises a first set of multi-offset response signals received at each receiver with the electromagnetic source emitting at a first frequency, and at least one additional set of multi-offset response signals received at each receiver with the electromagnetic source emitting at a different frequency. The presence of electrical anisotropy in the subsurface formation is determined using the first and at least one additional sets of multi-offset response signals.
    Type: Application
    Filed: July 1, 2008
    Publication date: March 3, 2011
    Inventor: Michael John Tompkins