Patents by Inventor Laurent Delabroy

Laurent Delabroy 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).

  • Compositions and methods for cleaning a wellbore prior to cementing
    Patent number: 8517100
    Abstract: Single-phase microemulsions, comprising a solvent, a surfactant blend and a carrier fluid, are effective spacer fluids for use during cementing operations. The solvent may be selected from the group consisting of monoterpenes, diterpenes, and alkyl or aryl esters of short-chain alcohols. The surfactant blend comprises a water-wetting surfactant or nonionic surfactant, a co-surfactant and an oil-solubilizing surfactant. The carrier fluid is aqueous. The solvent and surfactant blend are combined with the carrier fluid to produce the well-treatment microemulsion.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: August 27, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Syed A. Ali, Gunnar Debruijn, Laurent Delabroy, Emmanuel Therond, Bruno Drochon, Cecilia Nguyen
  • Methods for mitigation of annular pressure buildup in subterranean wells
    Patent number: 8360151
    Abstract: Compositions and methods that mitigate pressure buildup in the annular space between two tubular bodies in subterranean wells. The composition of the invention comprises an aqueous solution of crosslinkable acrylamide-base polymer, a crosslinker and a gas. Once foamed and placed in the annular space, the composition provides a resilient, flexible, compressible and durable body that is able to compensate for pressure increases in the annular space, thereby protecting the integrity of the tubular bodies.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: January 29, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Robert Williams, Emmanuel Therond, Laurent Delabroy
  • COMPOSITIONS AND METODS FOR CLEANING A WELLBORE PRIOR TO CEMENTING
    Publication number: 20110278004
    Abstract: Single-phase microemulsions, comprising a solvent, a surfactant blend and a carrier fluid, are effective spacer fluids for use during cementing operations. The solvent may be selected from the group consisting of monoterpenes, diterpenes, and alkyl or aryl esters of short-chain alcohols. The surfactant blend comprises a water-wetting surfactant or nonionic surfactant, a co-surfactant and an oil-solubilizing surfactant. The carrier fluid is aqueous. The solvent and surfactant blend are combined with the carrier fluid to produce the well-treatment microemulsion.
    Type: Application
    Filed: May 12, 2010
    Publication date: November 17, 2011
    Inventors: Syed A. Ali, Gunnar Debruijn, Laurent Delabroy, Emmanuel Therond, Bruno Drochon, Cecilia Nguyen
  • Compositions and Methods for Mitigation of Annular Pressure Buildup in Subterranean Wells
    Publication number: 20110120716
    Abstract: Compositions and methods that mitigate pressure buildup in the annular space between two tubular bodies in subterranean wells. The composition of the invention comprises an aqueous solution of crosslinkable acrylamide-base polymer, a crosslinker and a gas. Once foamed and placed in the annular space, the composition provides a resilient, flexible, compressible and durable body that is able to compensate for pressure increases in the annular space, thereby protecting the integrity of the tubular bodies.
    Type: Application
    Filed: November 20, 2009
    Publication date: May 26, 2011
    Inventors: Robert Williams, Emmanuel Therond, Laurent Delabroy