Patents by Inventor Luis Eduard DePavia

Luis Eduard DePavia 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).

  • Single-well through casing induction logging tool
    Patent number: 8456166
    Abstract: Methods and related systems are described for making electromagnetic measurements of a subterranean rock formation through a conductive casing of a borehole. A number of transmitters/receivers are deployed into single well having a conductive casing. A magnetic field is induced through the conductive casing and into a surrounding subterranean rock formation, and the magnetic field is detected by the receivers. The receivers have main windings, feedback winding and bucking windings. One of the receiver coils in the tool string is excited at a time, and induced voltages at all of the other receiver coils, either in straight mode, or in feedback mode, are measured.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: June 4, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Luis Eduard DePavia, Hong Zhang
  • SINGLE-WELL THROUGH CASING INDUCTION LOGGING TOOL
    Publication number: 20100134113
    Abstract: Methods and related systems are described for making electromagnetic measurements of a subterranean rock formation through a conductive casing of a borehole. A number of transmitters/receivers are deployed into single well having a conductive casing. A magnetic field is induced through the conductive casing and into a surrounding subterranean rock formation, and the magnetic field is detected by the receivers. The receivers have main windings, feedback winding and bucking windings. One of the receiver coils in the tool string is excited at a time, and induced voltages at all of the other receiver coils, either in straight mode, or in feedback mode, are measured.
    Type: Application
    Filed: June 15, 2009
    Publication date: June 3, 2010
    Inventors: Luis Eduard DePavia, Hong Zhang