Patents by Inventor Fatma Daou

Fatma Daou 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).

  • Compositons and methods for curing lost circulation
    Patent number: 10040985
    Abstract: Adding shapeable particles to drilling fluids may be useful for curing lost circulation. When the shapeable particles are pumped downhole through the drillpipe and the drillbit, they may deform when exposed to shear as they pass through the drillbit nozzles. While circulating back toward the surface they may relax at least partially and assume the shape of cracks or voids they encounter along the formation wall, thereby stopping losses.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: August 7, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Olga Alexandrovna Minikh, Diankui Fu, Fatma Daou, Bernhard Lungwitz
  • COMPOSITONS AND METHODS FOR CURING LOST CIRCULATION
    Publication number: 20170152428
    Abstract: Adding shapeable particles to drilling fluids may be useful for curing lost circulation. When the shapeable particles are pumped downhole through the drillpipe and the drillbit, they may deform when exposed to shear as they pass through the drillbit nozzles. While circulating back toward the surface they may relax at least partially and assume the shape of cracks or voids they encounter along the formation wall, thereby stopping losses.
    Type: Application
    Filed: March 31, 2014
    Publication date: June 1, 2017
    Inventors: Olga Alexandrovna MINIKH, Diankui FU, Fatma DAOU, Bernhard LUNGWITZ
  • Compositions and methods for reducing fluid loss
    Patent number: 9611716
    Abstract: The current application discloses compositions and methods for reducing fluid loss during subterranean operations. CO2 activated swellable elastomers can be used in subterranean operations to reduce fluid loss. In particular, the current application discloses compositions and methods for reducing lost circulation during drilling and drilling related subterranean operations.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: April 4, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Fatma Daou, Bernhard Lungwitz, Olga Alexandrovna Minikh, Diankui Fu
  • Swellable elastomer and its use in acidizing or matrix stimulation
    Patent number: 9556703
    Abstract: The current application discloses compositions and methods for treating a subterranean formation. CO2 swellable elastomers can be used in a treatment fluid to at least partially block a high permeability region, therefore improving the performance of an operation such as matrix stimulation, acidizing, and acid fracturing.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: January 31, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Fatma Daou, Bernhard Lungwitz, Olga Alexandrovna Minikh, Diankui Fu, Gregory Kubala
  • Compositions and methods for maintaining zonal isolation in a subterranean well
    Patent number: 9284477
    Abstract: Well cementing compositions comprise water, an inorganic cement and flexible particles having an average density higher than 1.5 g/cm3. The flexible particles may be elastomers. The flexible particles and cement particles may be present in a trimodal particle size distribution. The compositions may be placed in subterranean wells in the context of primary or remedial cementing.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: March 15, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Fatma Daou, Anthony Loiseau, Bernardo Engelke
  • Methods for Maintaining Zonal Isolation in A Subterranean Well
    Publication number: 20150211330
    Abstract: A cement for use in wells in which carbon dioxide is injected, stored or extracted, comprises elastomer particles. In the event of cement-matrix failure, or bonding failure between the cement/casing interface or the cement/borehole-wall interface, the elastomer particles swell when contacted by carbon dioxide. The swelling seals voids in the cement matrix, or along the bonding interfaces, thereby restoring zonal isolation.
    Type: Application
    Filed: September 2, 2013
    Publication date: July 30, 2015
    Inventors: Fatma Daou, Craig Borman, Bernard Piot
  • Compositions and Methods for Maintaining Zonal Isolation in A Subterranean Well
    Publication number: 20150166874
    Abstract: Well cementing compositions comprise water, an inorganic cement and flexible particles having an average density higher than 1.5 g/cm3. The flexible particles may be elastomers. The flexible particles and cement particles may be present in a trimodal particle size distribution. The compositions may be placed in subterranean wells in the context of primary or remedial cementing.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 18, 2015
    Applicant: Schlumberger Technology Corporation
    Inventors: Fatma Daou, Anthony Loiseau, Bernardo Engelke
  • Methods for Maintaining Zonal Isolation in A Subterranean Well
    Publication number: 20140110114
    Abstract: A cement for use in wells in which hydrogen sulfide is present, comprises elastomer particles. In the event of cement-matrix failure, or bonding failure between the cement/casing interface or the cement/borehole-wall interface, the elastomer particles swell when contacted by hydrogen sulfide. The swelling seals voids in the cement matrix, or along the bonding interfaces, thereby restoring zonal isolation.
    Type: Application
    Filed: October 23, 2012
    Publication date: April 24, 2014
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Fatma Daou, Bernhard Lungwitz
  • COMPOSITIONS AND METHODS FOR REDUCING FLUID LOSS
    Publication number: 20140090895
    Abstract: The current application discloses compositions and methods for reducing fluid loss during subterranean operations. CO2 activated swellable elastomers can be used in subterranean operations to reduce fluid loss. In particular, the current application discloses compositions and methods for reducing lost circulation during drilling and drilling related subterranean operations.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Inventors: Fatma Daou, Bernhard Lungwitz, Olga Alexandrovna Minikh, Diankui Fu
  • SWELLABLE ELASTOMER AND ITS USE IN ACIDIZING OR MATRIX STIMULATION
    Publication number: 20140090844
    Abstract: The current application discloses compositions and methods for treating a subterranean formation. CO2 swellable elastomers can be used in a treatment fluid to at least partially block a high permeability region, therefore improving the performance of an operation such as matrix stimulation, acidizing, and acid fracturing.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Inventors: Fatma Daou, Bernhard Lungwitz, Olga Alexandrovna Minikh, Diankui Fu, Gregory Kubala
  • Methods for Maintaining Zonal Isolation in A Subterranean Well
    Publication number: 20140060836
    Abstract: A cement for use in wells in which carbon dioxide is injected, stored or extracted, comprises elastomer particles. In the event of cement-matrix failure, or bonding failure between the cement/casing interface or the cement/borehole-wall interface, the elastomer particles swell when contacted by carbon dioxide. The swelling seals voids in the cement matrix, or along the bonding interfaces, thereby restoring zonal isolation.
    Type: Application
    Filed: September 3, 2012
    Publication date: March 6, 2014
    Inventors: Fatma Daou, Craig Borman, Bernard Piot