Patents by Inventor Graham M. Watson

Graham M. Watson 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).

  • WELLBORE ANNULAR SAFETY VALVE AND METHOD
    Publication number: 20150053415
    Abstract: A well system includes an annular barrier separating the tubing-casing annulus into an upper annulus and a lower annulus and a barrier valve coupled with the annular barrier, the barrier valve permitting one-way fluid communication from the upper annulus to the lower annulus. The annular barrier may include a female polished bore receptacle integrated in the casing and a male seal assembly integrated in the tubing. The tubing bore and an annular fluid conduit extend through the male seal assembly substantially parallel to one another and the barrier valve is connected in the annular fluid conduit.
    Type: Application
    Filed: August 22, 2013
    Publication date: February 26, 2015
    Applicant: Schlumberger Technology Corporation
    Inventors: Eirik Windegaard, Bjoern Staale Varnes, Niek Dijkstra, Geir Meling, Graham M. Watson
  • High solids content slurry systems and methods
    Patent number: 8936082
    Abstract: A method includes providing a slurry comprising a carrier fluid and a solids mixture, and injecting said slurry in a wellbore wherein the solids mixture comprises at least two volume-averaged particle size distribution (PSD) modes, wherein a first PSD mode comprises solids having a volume-average median size at least three times larger than the volume-average median size of a second PSD mode such that a packed volume fraction (PVF) of the solids mixture exceeds 0.75.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: January 20, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Mohan K. R. Panga, Peter J. Photos, Bruno Drochon, John W. Still, Mehmet Parlar, Balkrishna Gadiyar, Dinesh R. Patel, Graham M. Watson
  • Open-hole stimulation system
    Patent number: 8408300
    Abstract: A stimulation system configured for use in open-hole wells. The system may alternatively or additionally be configured for multi-zone stimulation applications. The system includes assemblies which employ techniques and configurations for isolating recovery screens downhole even without the presence of well casing. In this manner protection may be provided from dowhnole contaminants such as water which might otherwise leak in from adjacent formation layers.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: April 2, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Ricardo Gomez Simancas, Bryan Stamm, Graham M. Watson, Tom Saunders
  • HIGH SOLIDS CONTENT SLURRY SYSTEMS AND METHODS
    Publication number: 20120000651
    Abstract: A method includes providing a slurry comprising a carrier fluid and a solids mixture, and injecting said slurry in a wellbore wherein the solids mixture comprises at least two volume-averaged particle size distribution (PSD) modes, wherein a first PSD mode comprises solids having a volume-average median size at least three times larger than the volume-average median size of a second PSD mode such that a packed volume fraction (PVF) of the solids mixture exceeds 0.75.
    Type: Application
    Filed: June 30, 2010
    Publication date: January 5, 2012
    Inventors: Mohan K.R. Panga, Peter J. Photos, Bruno Drochon, John W. Still, Mehmet Parlar, Balkrishna Gadiyar, Dinesh R. Patel, Graham M. Watson
  • OPEN-HOLE STIMULATION SYSTEM
    Publication number: 20100314124
    Abstract: A stimulation system configured for use in open-hole wells. The system may alternatively or additionally be configured for multi-zone stimulation applications. The system includes assemblies which employ techniques and configurations for isolating recovery screens downhole even without the presence of well casing. In this manner protection may be provided from dowhnole contaminants such as water which might otherwise leak in from adjacent formation layers.
    Type: Application
    Filed: February 15, 2010
    Publication date: December 16, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Ricardo Gomez Simancas, Bryan Stamm, Graham M. Watson, Tom Saunders
  • Use of lasers to break down objects for removal from within the body
    Patent number: 5176675
    Abstract: Calculi, stones, or calcified tissue are broken down for removal from within a body using laser pulses that are delivered via an optical fiber and have a wavelength and pulse duration selected to break down the object into smaller particles without delivering energy sufficient to cause damage to other tissue.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: January 5, 1993
    Assignee: The General Hospital Corporation
    Inventors: Graham M. Watson, Horace W. Furumoto