Patents by Inventor Michael D. Watts

Michael D. Watts 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: 8275592
    Abstract: To perform inversion based on electromagnetic (EM) data acquired in a subterranean survey, time domain controlled source EM (TD-CSEM) data is acquired by at least one EM receiver in response to EM signals from a controlled EM source. Further data is received, where the further data is selected from among magnetotelluric (MT) data and DC data acquired by the at least one receiver. A probabilistic joint inversion is applied on the TD-CSEM data and the further data to produce a model representing a subterranean structure that is a target of the subterranean survey.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: September 25, 2012
    Assignee: WesternGeco L.L.C.
    Inventors: Andrea Lovatini, Michael D. Watts, Diego Rovetta, Giancarlo Bernasconi, Paolo Mazzucchelli
  • Publication number: 20100154228
    Abstract: The present invention provides a trimmer line for a grass trimmer. The trimmer line is comprised of a cutting string having a cutting end and an engagement end. An engagement device is affixed to the engagement end of the cutting string and has an expanded position and an install position. When the engagement device is in its expanded position, it has a greater outer diameter than in its install position.
    Type: Application
    Filed: December 21, 2009
    Publication date: June 24, 2010
    Inventors: David L. Watts, Michael D. Watts
  • Publication number: 20090254320
    Abstract: To perform inversion based on electromagnetic (EM) data acquired in a subterranean survey, time domain controlled source EM (TD-CSEM) data is acquired by at least one EM receiver in response to EM signals from a controlled EM source. Further data is received, where the further data is selected from among magnetotelluric (MT) data and DC data acquired by the at least one receiver. A probabilistic joint inversion is applied on the TD-CSEM data and the further data to produce a model representing a subterranean structure that is a target of the subterranean survey.
    Type: Application
    Filed: March 27, 2009
    Publication date: October 8, 2009
    Inventors: Andrea Lovatini, Michael D. Watts, Diego Rovetta, Giancarlo Bernasconi, Paolo Mazzucchelli
  • Patent number: 7504829
    Abstract: Methods and apparatus are provided for controlled source electromagnetic surveying. In particular, a time-varying electromagnetic signal is transmitted at a first location, and an electromagnetic signal responsive to the transmitted signal is received at a second location, wherein the received signal includes a transient response component and a steady-state component. The received signal is continuously recorded during a predetermined time interval, and data corresponding to the transient response component and the steady-state component are extracted from the received signal. The transient response data and the steady-state response data are jointly inverted to identify a subsurface feature, such as resistivity.
    Type: Grant
    Filed: November 23, 2006
    Date of Patent: March 17, 2009
    Assignee: WesternGeco L.L.C.
    Inventor: Michael D. Watts
  • Publication number: 20080094066
    Abstract: Methods and apparatus are provided for controlled source electromagnetic surveying. In particular, a time-varying electromagnetic signal is transmitted at a first location, and an electromagnetic signal responsive to the transmitted signal is received at a second location, wherein the received signal includes a transient response component and a steady-state component. The received signal is continuously recorded during a predetermined time interval, and data corresponding to the transient response component and the steady-state component are extracted from the received signal. The transient response data and the steady-state response data are jointly inverted to identify a subsurface feature, such as resistivity.
    Type: Application
    Filed: November 23, 2006
    Publication date: April 24, 2008
    Inventor: Michael D. Watts