Patents by Inventor Harold David Leslie

Harold David Leslie 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).

  • Methods and systems for microseismic mapping
    Patent number: 8612155
    Abstract: Methods and systems for the detection and localization of microseismic events are proposed which operate in real-time. Hypocenters in three spatial dimensions are provided along with an estimate of the event origin time. Sensor positions may be distributed in 3D space, and are not confined to linear arrays in vertical wells. A location of the event is approximated and a grid search, based on the approximate location of the event, is used to derive a residual function over a finer sampling followed by a gradient search of the residual function to optimize the location of the event.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: December 17, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Bassem Khadhraoui, Harold David Leslie, Gwenola Michaud, W. Scott Leaney
  • Continuous microseismic mapping for real-time 3D event detection and location
    Patent number: 8494777
    Abstract: A method for the detection and localization of microseismic events is proposed which operates in real-time. It provides hypocenters in three spatial dimensions along with an estimate of the event origin time. Sensor positions may be distributed in 3D space, and are not confined to linear arrays in vertical wells. The method combines and improves two existing approaches. For detection and localization purposes the method makes use of the generalized beam-forming and forward modeling properties defined in the “CMM” algorithm. For location refinement, the method uses a stabilized version of the generalized “Geiger” approach.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: July 23, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Bassem Khadhraoui, Harold David Leslie, Gwenola Michaud, W. Scott Leaney
  • METHODS AND SYSTEMS FOR MICROSEISMIC MAPPING
    Publication number: 20100262373
    Abstract: Methods and systems for the detection and localization of microseismic events are proposed which operate in real-time. Hypocenters in three spatial dimensions are provided along with an estimate of the event origin time. Sensor positions may be distributed in 3D space, and are not confined to linear arrays in vertical wells. A location of the event is approximated and a grid search, based on the approximate location of the event, is used to derive a residual function over a finer sampling followed by a gradient search of the residual function to optimize the location of the event.
    Type: Application
    Filed: April 8, 2010
    Publication date: October 14, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: BASSEM KHADHRAOUI, HAROLD DAVID LESLIE, GWENOLA MICHAUD, W. SCOTT LEANEY
  • CONTINUOUS MICROSEISMIC MAPPING FOR REAL-TIME 3D EVENT DETECTION AND LOCATION
    Publication number: 20090259406
    Abstract: A method for the detection and localization of microseismic events is proposed which operates in real-time. It provides hypocenters in three spatial dimensions along with an estimate of the event origin time. Sensor positions may be distributed in 3D space, and are not confined to linear arrays in vertical wells. The method combines and improves two existing approaches. For detection and localization purposes the method makes use of the generalized beam-forming and forward modeling properties defined in the “CMM” algorithm. For location refinement, the method uses a stabilized version of the generalized “Geiger” approach.
    Type: Application
    Filed: April 8, 2009
    Publication date: October 15, 2009
    Applicant: Schlumberger Technology Corporation
    Inventors: Bassem Khadhraoui, Harold David Leslie, Gwenola Michaud, W. Scott Leaney