Patents by Inventor Shahzad Asif

Shahzad Asif 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: 10598817
    Abstract: A method, apparatus, and program product utilize a buffer defined relative to a wellbore trajectory to generate a work zone around a wellbore for use in connection with formation modeling. In some embodiments, for example, a closed curve such as a non-rectangular, polygonal work zone may be defined around a wellbore based upon a buffer that extends generally transverse to the trajectory of a length of a wellbore a predetermined distance. In addition, boundaries may be defined in a work zone to effectively split the work zone into multiple closed curves or polygons in response to user editing, e.g., to create one or more subsurface layers in the work zone. In such instances, points defining a subsurface layer may be shared by adjacent layers such that editing of such points will affect each of the layers sharing such points.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: March 24, 2020
    Assignee: Schlumberger Technology Corporation
    Inventors: Joan Abadie, Adrien Chassard, Mohammad Taghi Salehi, David Maggs, Shahzad Asif, Christopher Edward Morriss, Koji Ito
  • Patent number: 10466375
    Abstract: A method for automatic interpretation of bulls-eye and sinusoidal features observed in LWD images is disclosed. In some embodiments, the method includes an automatic workflow for extracting smooth contours from images that demarcate boundaries of structural features, followed by projection of the contours to three-dimensional (3D) point clouds in the well coordinate system for structural interpretation. The method may characterize both sinusoidal features and bulls-eye features, taking into account variations of formation dip/azimuth, or well inclination/azimuth, on the topology of a structural feature. The disclosed method may be sufficiently fast for use in real-time analysis and interpretation, or to provide constraints for physics-based data inversion processing.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: November 5, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Sushil Shetty, John Rasmus, Christopher Edward Morriss, Koji Ito, Shahzad Asif, Vittorio Picco
  • Publication number: 20160370480
    Abstract: A method for automatic interpretation of bulls-eye and sinusoidal features observed in LWD images is disclosed. In some embodiments, the method includes an automatic workflow for extracting smooth contours from images that demarcate boundaries of structural features, followed by projection of the contours to three-dimensional (3D) point clouds in the well coordinate system for structural interpretation. The method may characterize both sinusoidal features and bulls-eye features, taking into account variations of formation dip/azimuth, or well inclination/azimuth, on the topology of a structural feature. The disclosed method may be sufficiently fast for use in real-time analysis and interpretation, or to provide constraints for physics-based data inversion processing.
    Type: Application
    Filed: February 27, 2015
    Publication date: December 22, 2016
    Inventors: Sushil Shetty, John Rasmus, Christopher Edward Morriss, Koji Ito, Shahzad Asif, Vittorio Picco
  • Publication number: 20160130916
    Abstract: A method, apparatus, and program product utilize a buffer defined relative to a wellbore trajectory to generate a work zone around a wellbore for use in connection with formation modeling. In some embodiments, for example, a closed curve such as a non-rectangular, polygonal work zone may be defined around a wellbore based upon a buffer that extends generally transverse to the trajectory of a length of a wellbore a predetermined distance. In addition, boundaries may be defined in a work zone to effectively split the work zone into multiple closed curves or polygons in response to user editing, e.g., to create one or more subsurface layers in the work zone. In such instances, points defining a subsurface layer may be shared by adjacent layers such that editing of such points will affect each of the layers sharing such points.
    Type: Application
    Filed: November 5, 2015
    Publication date: May 12, 2016
    Inventors: Joan Abadie, Adrien Chassard, Mohammad Taghi Salehi, Shahzad Asif, Christopher Edward Morriss, Koji Ito
  • Patent number: 8473212
    Abstract: A method for processing well logging data includes method dividing the well logging data into a number of constant dimensional effect segments, where each constant dimensional effect segment defines an interval having a similar dimensional effect on the log response. The well logging data is taken from a highly deviated well. The method further includes dividing the constant dimensional effect segments into a number of constant property intervals, each constant dimensional effect segment including at least one corresponding constant property interval, and each constant property interval defining a wellbore distance over which a formation property is substantially constant that results in a log response having a low variance. The method further includes providing the constant property intervals to an output device.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: June 25, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: John C. Rasmus, John P. Horkowitz, Koji Ito, Christian Stolte, Shahzad Asif, Bernadette Tabanou
  • Publication number: 20100312478
    Abstract: A method for processing well logging data includes method dividing the well logging data into a number of constant dimensional effect segments, where each constant dimensional effect segment defines an interval having a similar dimensional effect on the log response. The well logging data is taken from a highly deviated well, which may include portions deviated at greater than 90-degrees. The method further includes dividing the constant dimensional effect segments into a number of constant property intervals, each constant dimensional effect segment including at least one corresponding constant property interval, and each constant property interval defining a wellbore distance over which a formation property is substantially constant that results in a log response having a low variance. The method further includes providing the constant property intervals to an output device.
    Type: Application
    Filed: February 25, 2010
    Publication date: December 9, 2010
    Inventors: JACQUES R. TABANOU, John C. Rasmus, John P. Horkowitz, Koji Ito, Christian Stolte, Shahzad Asif, Bernadette Tabanou