Patents by Inventor Gustavo Cavazzoli

Gustavo Cavazzoli 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).

  • Matrix acidizing high permeability contrast formations
    Patent number: 7318475
    Abstract: A method for stimulating thick or multilayered heterogeneous or homogeneous formations in a single trip without packers involves perforating with tubing conveyed perforation, then injecting a self-diverting acid, then moving the tubing string and perforating at a new location, and then injecting additional self-diverting acid. The sequence may be repeated. The acid is preferably a viscoelastic diverting acid. The self-diverting acid may be alternated with conventional treatment fluid. The job is designed to treat the least permeable zone(s) first and maximizes acid efficiency.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: January 15, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Gustavo Cavazzoli, Juan Gabriel Blanco, J. Ernest Brown, Pia-Angela Francini, Diankui Fu
  • Matrix acidizing high permeability contrast formations
    Publication number: 20060000609
    Abstract: A method for stimulating thick or multilayered heterogeneous or homogeneous formations in a single trip without packers involves perforating with tubing conveyed perforation, then injecting a self-diverting acid, then moving the tubing string and perforating at a new location, and then injecting additional self-diverting acid. The sequence may be repeated. The acid is preferably a viscoelastic diverting acid. The self-diverting acid may be alternated with conventional treatment fluid. The job is designed to treat the least permeable zone(s) first and maximizes acid efficiency.
    Type: Application
    Filed: August 5, 2005
    Publication date: January 5, 2006
    Inventors: Gustavo Cavazzoli, Juan Blanco, J. Brown, Pia-Angela Francini, Diankui Fu